JP2009089692A - Harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shoulder-arranging device by which the shoulders of main roots are arranged in a certain range, regardless of the sizes of stems and leaves in a harvester. <P>SOLUTION: The harvester includes a pulling up and moving device 8 for pulling up root vegetables by nipping the root vegetables planted on a field by a right and left pair of belts, while moving rearward, and installed in a self-propelled car body A; a stem and leaf-cutting device 11 installed in the rear lower position of a nipping and conveying route 8a of the pulling up and moving device 8; and a shoulder-arranging device 100 installed in the front position of the stem and leaf-cutting device 11. The shoulder-arranging device 100 includes a right and left pair of cogged belts 113 and 113, and driven pulleys 111 and 111 and subsequent pulleys 112 and 112 wound by the cogged belts 113 and 113. The subsequent pulley 112, at least at right or left one side is constituted so as to be turned in the right and left directions by centering a shaft supporting the front-side driven pulley 111, and is urged to the center side in the right and left direction of the conveying route by a spring 133. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a harvesting machine, and more particularly, to a technique for constructing a shoulder aligner provided below a pinch transfer path and in front of a stem diameter cutting apparatus in a pick-up transfer apparatus of a root vegetable harvesting machine.

  Conventionally, harvesters that harvest root vegetables such as radishes and carrots are well known as agricultural machines used for field cropping. For example, a self-propelled root vegetable harvesting machine is configured by mounting a pick-up operation unit, a sorting conveyor unit, and a harvesting platform on a crawler-type self-propelled vehicle body. Here, the pulling-out working unit is inclined to the front low rear height from the foliage sorting apparatus positioned at the front end in the traveling direction and the rear lower part of the foliage shaping apparatus to the rear upper part of the vehicle body. A pull-out transfer device (draw-out transfer device), a chisel located near the starting end of the pinch transfer path of the pull-out transfer device, and a foliage cutting device installed in association with the vicinity of the transfer end portion of the pull-out transfer device, And a leaf discharging device or the like.

All root vegetables harvested by the harvesting machine need to be cut with the cutting position of the main root and the foliage aligned near the upper end of the main root. For this reason, the pull-up transfer device is provided with a shoulder alignment device below the pinching transfer path and in front of the foliage cutting device. The shoulder aligning device is a device that aligns the upper ends (shoulders) of the main roots in the vertical direction while being transferred rearward and upward by the sandwiching transfer path and before being transferred to the foliage cutting device. For example, Patent Documents 1 and 2 each disclose a shoulder aligner for a harvesting machine.
JP 2001-327210 A JP-A-7-95805

However, since the shoulder aligning device of Patent Document 1 guides the foliage with a certain gap, the foliage is excessively raised or insufficiently raised depending on the thickness of the root vegetable. For example, if the foliage is small, it may be pulled up too much by the pulling and transferring device, and the shoulder portion of the main root may be damaged, or a part of the shoulder may be cut by the cutting device in the subsequent stroke. On the other hand, if the foliage is large, the clamping force of the shoulder aligner is so strong that the foliage cannot be cut at the root of the main root.
Moreover, although the shoulder aligning apparatus of patent document 2 is set as the structure urged | biased to the transfer path right-left center side by the elastic body, since the guide plate is urged | biased by the pantograph-like link, it is behind the root vegetables of a thick foliage. When the thin root and leaf root vegetables are transferred, the rear guide plate is opened. On the contrary, when the thick root and leaf roots are transferred after the thin root and leaf root vegetables, the front guide plate is opened, and as described above, excessive pulling may occur.
Therefore, the problem to be solved is to provide a shoulder aligner that can perform constant shoulder alignment of the main root regardless of the size of the foliage in the harvester.

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

  That is, in claim 1, the root vegetable planted in the field is sandwiched between a pair of left and right endless bodies, and is pulled out while being transferred backwards. In a harvesting machine having a foliage cutting device and a shoulder aligning device in front of the foliage cutting device below the rear of the transfer path, the shoulder aligning device is a pair of left and right endless bodies, and rotations before and after winding the endless bodies And at least one of the left and right rear rotating bodies is configured to be rotatable left and right about an axis that supports the front rotating body, and is urged by an elastic body to the left and right center side of the transfer path. Is.

  According to a second aspect of the present invention, in the harvester according to the first aspect, the diameter of the rear rotating body is smaller than the diameter of the front rotating body.

  According to a third aspect of the present invention, in the harvesting machine according to the first or second aspect, the support shaft of the rear rotating body is supported by one end of the first arm arranged in the left-right direction, and the other side of the first arm is moved back and forth. The other end of the second arm is supported by one end of the second arm, and the other end of the second arm is pivotally supported by the transfer frame on the side of the front rotating body. An elastic body is interposed between the ends, and the rotating body on the rear side is configured to be urged toward the rear side and the right and left center side of the transfer path.

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

  According to the first aspect, the width between the left and right endless bodies on the rear side can follow the size of the root vegetable stems and leaves, so that it is possible to eliminate excessive pulling or insufficient pulling of the pulling and transferring device and improve shoulder alignment accuracy. Also. Even if a large root and leaf root vegetable is transferred to the front of the root vegetable just before cutting, the width becomes wide and there is no height deviation of the agricultural product, and when it is introduced into the stem and leaf cutting device, the stem and leaf can be positioned, and the predetermined height is accurately determined. You can cut it.

  According to the second aspect, since the dead space between the rear ends of the left and right endless bodies and the foliage cutting device can be reduced, the transfer posture of the root vegetables is stabilized and the cutting accuracy can be improved.

  According to the third aspect of the present invention, the belt tensioning action and the foliage pinching and urging action can be simultaneously performed by one elastic body, so that the shoulder aligner can be manufactured at a low cost with a simple configuration. Further, when the rear rotating body has a small diameter, the shoulder aligner can be designed in a space-saving manner by arranging the arm on the side of the small diameter rotating body.

Next, embodiments of the invention will be described.
FIG. 1 is a side view showing the overall configuration of a carrot harvester according to an embodiment of the present invention, FIG. 2 is a schematic plan view, and FIG. 3 is a schematic front view.
4 is a transmission system diagram, FIG. 5 is a side view showing a carrot to be harvested, and FIG. 6 is a plan view showing the overall configuration of the first shoulder aligner.
7 is a side view, FIG. 8 is a plan view showing the overall configuration of the second shoulder aligner, and FIG. 9 is a side view.
FIG. 10 is a plan view showing the overall configuration of the cushion, and FIG. 11 is a side view of the same.

First, the overall configuration of the root vegetable harvester according to the present invention will be described with reference to FIGS.
1 to 4, the self-propelled root vegetable harvesting machine has a self-propelled vehicle body A having left and right crawlers 1a and 1b, and a pulling work section B, a sorting conveyor section C, and a harvest platform D. The self-propelled vehicle body A is configured with an output shaft of an engine 6 in which a transmission 3 that transmits power to the respective drive wheels 2 (2) of the left and right crawlers 1a and 1b is mounted in the machine room 5 of the boarding operation unit 4. The vehicle is connected to each other, and is driven by the driving power of the engine 6 so that the left and right crawlers 1a and 1b are driven to rotate, and the riding operation unit 4 performs a driving operation.

  And the boarding operation part 4 is arrange | positioned above the vehicle body front part by the side of one crawler 1b, and the side part of the boarding operation part 4, ie, the pulling-out operation part facing front and back on the other crawler 1a side B is further provided on the rear vehicle body below the end portion of the extraction work section B, the remaining leaf processing device 72 in parallel with the extraction work section B, and the vehicle width direction perpendicular to the extraction work section B A sorting conveyor section C comprising a lifting conveyor 73 that is disposed so as to be able to ascend and descend from the rear lower portion of the remaining leaf processing device 72 toward the right is disposed, and the transfer terminal side of the sorting conveyor section C, that is, A crop loading table D is disposed on the laterally outer side of the vehicle body on the side opposite to the pulling-up operation unit B with the boarding operation unit 4 interposed therebetween. Further, between the boarding operation unit 4 and the sorting conveyor unit C, an auxiliary worker seat 50 on which an assistant who performs the sorting operation sits is provided.

  In addition, the pulling-out working part B is hung from the rear lower part of the foliage sorting apparatus 7 located at the front end in the traveling direction of the working part B to the rear upper part of the vehicle body, A pull-up transfer device (pull-out transfer device) 8 tilted to the front low and rear height, a chisel 9 located near the starting end of a nipping transfer path 8a (shown in FIG. 3) of the pull-up transfer device 8, It is composed of a foliage cutting device 11 and a leaf discharging device 12 which are installed in the vicinity of the transfer terminal portion of the lifting and transferring device 8, and the entire extraction working unit B composed of these devices is described later. With the moving fulcrum 19 as a fulcrum, it is configured to rotate up and down like a seesaw. It should be noted that a root cutting device 10 is installed at the lower part of the extraction work unit B below the transfer intermediate part of the extraction transfer device 8.

  The foliage trimming device 7 of the pulling-out working part B has a foliage scraping mechanism 15 having a horizontal turning tine 14 projecting horizontally from the left and right casings 13 and an outer front portion of the right and left casing 13. It is composed of a leaflet mechanism 18 having a longitudinal tine 17 that protrudes from the front upper surface of a casing 16 that is arranged orthogonally and moves rearward and upward, and the roots and leaves of the root vegetables in the extraction area and the root vegetables outside the extraction area The stems and leaves are separated and distributed by the branching mechanism 18, and the stems and leaves of the root vegetables in the extracted area are held by the stem and leaf scraping mechanism 15 and scraped into the start end portion of the pinch transfer path 8 a of the extraction transfer device 8. It is configured.

  The pull-out transfer device 8 includes a pair of left and right start-end-side wheels 22 and 22 attached to a front end portion of a support frame 21 held by a bracket 20 that can be rotated up and down around a horizontal and lateral rotation fulcrum 19. , A pair of left and right end side ring bodies 23, 23 disposed at the rear end portion of the support frame 21, and a plurality of intermediate ring bodies 24 group disposed on the support frame 21 between the start end side and the end side ring bodies 22, 23. The left and right nipping and transporting endless bands 25 and 25 are respectively hung to form the nipping and transporting path 8a between the opposing surfaces of the both endless bands 25 and 25. The outer side of the crawler 1a is positioned so as to be parallel to the traveling direction of the self-propelled vehicle body A in a plan view. Further, each nipping and transporting endless belt 25 sandwiches the root vegetable stems and leaves K between the sandwiching belt portions made of a soft elastic material on the outer periphery of the V-belt that hangs around the starting-end-side ring body 22 or the like of the V pulley structure. It is configured.

  Further, the chisel 9 is attached to the lower end of a vertical support rod 30 connected to the front end of a parallel link mechanism composed of an upper link 28 and a lower link 29 that rotate up and down about the upper and lower pivots 26 and 27, and is supported vertically. The horizontal blade is bent and formed laterally from the lower end of the vertical blade that hangs down from the collar 30.

  As shown in FIGS. 1 and 2, the belt is wound around the pulley 31 fitted to the upper pivot 26 and the output pulley 32 provided on the output shaft of the engine 6, and fitted to the pivot 26. The base end of the upper link 28 is connected to an eccentric boss (not shown), and the upper link 28 is swung by the rotation of the eccentric boss so that the horizontal blade enters the soil below the root N of the root vegetable as appropriate. The chisel 9 positioned is configured to vibrate up and down and back and forth or up and down or back and forth, and an extension cylinder 33 is interposed between the base end of the lower link 29 and the self-propelled vehicle body A, and the extension cylinder The vertical links 28 and 29 are moved up and down by the expansion and contraction operation of 33.

  Further, as shown in FIGS. 1, 2 and 4, a pipe frame 35 is continuously provided on the front upper side from the outer end portion of the lateral transmission cylinder 34 in which the rotation fulcrum shaft 19 is provided concentrically. A transmission pipe 36 for transmitting power to the foliage scraping mechanism 15 of the foliage trimming device 7 is connected to the right side inward of the vehicle body from the front end of the frame 35, and the transmission extends forward from the outer end of the pipe frame 35. The branching mechanism 18 of the foliage sorting apparatus 7 is connected through a case 37 and a lateral case 38 connected thereto.

  Then, a belt is hung on the pulley 39 fitted on the upper pivot 26 and the pulley 40 fitted on the right end of the inner end of the rotation fulcrum shaft 19 to transmit power from the pivot 26 to the rotation fulcrum 19. Further, the rotation is transmitted from the rotation fulcrum portion 19 to the foliage scraping mechanism 15 and the lobing mechanism 18 via the transmission mechanism in the pipe frame 35, the transmission pipe 36, the transmission case 37, and the lateral case 38, respectively. It is configured to drive.

  In addition, power is transmitted from the pulley 41 fitted to the outer end portion (left end portion) of the rotation fulcrum shaft 19 to the rear transmission case 43 via the belt 42, and a pair of left and right parts in the pull-up transfer device 8 is transmitted. Driven to the support shafts of the end-side rings 23 and 23, the nipping and transporting endless belts 25 and 25 of the pulling and transferring device 8 are driven to rotate in their intended directions. The leaf removal device 12 that inherits and sandwiches the roots and leaves K of the root vegetables that are sandwiched and transferred by 25 and 25 and transfers them horizontally backward, and the leaf and leaf cutting device that cuts the stems and leaves K while the root vegetables are being transported by the leaf removal device 12. 11 is configured to drive both devices 12 and 11 by transmitting power to them.

  The leaf removal device 12 includes upper and lower nipping and transporting endless belt mechanisms 44a and 44b, and the nipping and transporting end portions of the nipping and transporting endless belt mechanisms 44a and 44b are positioned close to the rear end of the nipping and transporting route 8a. Furthermore, the pair of left and right first shoulder aligning devices 100 is extended from the lower front side of the lower holding and transporting endless belt mechanism 44b to the rear rear surface of the holding and transferring path 8a, and the second shoulder is further forward and downward. The upper end of the main root N of the root vegetable that is lifted and transferred by the pulling and transferring device 8 is guided with the aligning device 150 extended, and the stems and leaves above the main root N of the root vegetable are guided while being regulated by a pair of left and right guide rods and endless bodies. It is configured so that K can be accurately inherited to the nipping and transfer path start end portions of the nipping and transporting endless belt mechanisms 44a and 44b. It should be noted that a plurality of shoulder aligners 100 and 150 can be disposed further forward. In addition, a leaflet guide plate 46 is provided at the end of the pinching and transporting path of the pinching and transporting endless belt mechanisms 44a and 44b. The leaflet guide plate 46 allows the roots and leaves K cut by the foliage cutting device 11 to fall into the field after the root vegetable is removed. Has been. The upper nipping and transporting endless belt mechanisms 44a and 44b are constituted by belts formed of elastic endless belts.

  Further, the foliage cutting device 11 is configured as a disc blade by left and right rotating vertical axes 48 and 48 projecting upward from the drive case 47 and rotating blades 49 and 49. The foliage cutting device 11 is brought close to the lower side of the upper clamping and transporting endless belt mechanisms 44a and 44a and the left and right clamping and transporting endless belt mechanisms 44b and 44b, and further closer to the rear end of the first shoulder alignment device 100. The cutting action part is formed in the overlapping part of the rotary blades 49, 49, and the upper foliage K is cut from the vicinity of the upper end of the main root N of the root vegetable (shoulder part N1 described later) by this cutting action part. (See FIG. 5).

Further, the remaining leaf processing device 72 of the sorting conveyor section C is provided with a flat belt 72a, which is an example of a transfer belt, in the front-rear direction below the foliage cutting device 11 below the pull-out transfer device 8. The flat belt 72a is provided with rollers having axial centers arranged in parallel in the front-rear direction. A flat belt 72a is wound between the rollers, and the main root N of the root vegetables after cutting the foliage is placed on the flat belt 72a. It is arranged to fall. At this drop position, a fall buffer member 81 is provided, and an oblique roller 72b, which is an example of a remaining leaf processing roller, is disposed on the rear portion thereof, and the oblique roller 72b is disposed with a predetermined gap from the upper surface of the flat belt 72a. Are arranged diagonally from the front left to the rear right. Further, a height adjusting mechanism 75 for adjusting the gap is disposed at the start end of the oblique roller 72b. Then, by rotating and driving the flat belt 72a and the oblique roller 72b, the dropped main root N is transferred backward, and is guided by the oblique roller 72b so as to drop to the starting end side of the lower left portion of the conveyor 73. At this time, in some cases, the stems and leaves K that cannot be cut by the foliage cutting device 11 remain in the main root N, and the unprocessed foliage leaves are sandwiched between the flat belt 72a and the oblique rollers 72b during the rearward transfer. The main root N is lifted and transferred to the conveyor 73. The foliage K processed by the remaining leaf processing device 72 is dropped to the field through the shooter 90 from the end portion of the flat belt 72a.
The lifting conveyor 73 receives the main root N of the root vegetables falling to the right side from the rear part of the remaining leaf processing device 72, and is placed on the side of the vehicle body on the opposite side (the right side in the traveling direction) of the unloading operation part B. It is transported toward a container such as a container or a storage bag (flexible bag) on the table D, and the lifting conveyor 73 winds a flat belt between rollers on both left and right sides, and a flat plate is formed on the outer periphery of the flat belt. The slats 79 are erected in the front-rear direction at predetermined intervals, and the flat belt is rotationally driven obliquely upward by the power transmitted from the PTO shaft 51 of the transmission 3 to the input unit 53 through the transmission mechanism 52. It is comprised so that. And while the main root N group of root vegetables falls between the slats 79 and is transferred toward the transfer terminal part of the lifting conveyor 73, the defective ones of the main root N groups are artificially removed. Only the non-defective product of the main root N that has been sorted and removed and has reached the transfer end of the lifting conveyor 73 is accommodated in a storage bag 54 suspended on the harvested product platform D.

  The harvest platform D is composed of a base plate that is hinged to be able to stand up and down on the side of the body opposite to the left side of the unloading work part B. The storage bag 54 is placed on a base plate in a horizontal posture while maintaining the horizontal posture overhanging.

  Further, the foliage sorting apparatus 7 composed of the foliage scraping mechanism 15 and the foliage mechanism 18 is configured to rotate up and down integrally with the extraction transfer device 8 that rotates up and down around the rotation fulcrum shaft 19. Is supported by the grounding ring 56 attached to the front end of a support rod 55 that protrudes forward from the frame assembly that pivots up and down integrally.

  When the above-described telescopic cylinder 33 is extended to rotate the parallel link mechanism upward, the push-up rotary roller 57 provided on the side surface of the lower link 29 of the parallel link mechanism is It moves along the lower surface of the guide rail 58 in the shape of a side view provided on the lower surface side of the support frame, and with the extension movement of the single telescopic cylinder 33, the foliage trimming device 7 together with the chisel 9 and The lower end of the pull-out transfer device 8 is greatly raised from the ground.

  When working with the root vegetable harvesting machine as described above, the front part of the extraction work part B is lowered to the working position by the operation of the telescopic cylinder 33, and the scraping action of the foliage scraping mechanism 15 of the extraction work part B is performed. The leading end of the holding transfer path 8a of the road and the pulling transfer device 8 is aligned so as to match the root vegetables lined up in the field, and the self-propelled vehicle A is moved forward while operating each part of the pulling up work part B. Let

  Then, the vertical turning tine 17 of the leaf splitting mechanism 18 separates the root vegetables stems and leaves K within the extracted area and the root vegetables stems and leaves K outside the extracted area. The lateral tine 14 of the scraping mechanism 15 is pulled up and guided to the start end portion of the nipping / transferring path 8a of the pulling / transferring device 8 while being shaped.

  Then, the root vegetables stems and leaves K that have reached the pinch transfer path 8a of the pull-up transfer device 8 are pinched by the pinch transfer path 8a and lifted obliquely upward, whereby the main root N of the root vegetables is extracted from the soil. However, in this case, the chisel 9 that rushes to the appropriate lower position of the main root N of the root vegetables vibrates due to the ground descent of the extraction work unit B, and excavates the soil to loosen the soil. The main root N of the root vegetable is pulled out with a slight force.

  While the stems and leaves K are held in the holding transfer path 8a of the pull-up transfer device 8 and are lifted and transferred obliquely and upwardly in a suspended state, a thin root at the tip of the root vegetable, the so-called tail N2, is removed by the root cutting device 10. Disconnected. And when it is further moved rearward and upward, the shoulder N1 of the main root N of the root vegetable is restrained by the lower surface side of the second shoulder aligning device 150 and the first shoulder aligning device 100 and moves substantially horizontally rearward. The stems and leaves K are sandwiched and transferred by the sandwiching and transporting endless belt mechanisms 44a and 44b of the leaf discharging device 12, and are cut by the cutting action portions of the rotary blades 49 and 49 of the stem and leaf cutting device 11 along the way. The foliage K is dropped from the rear end portions of the pinching and transporting endless belt mechanisms 44a and 44b to the field through the leaflet guide plate 46. Further, the main root N of the root vegetables unsuspended by cutting the stems and leaves K falls to the remaining leaf processing device 72 of the sorting conveyor C and is transferred rearward, and the remaining leaves are processed by the rear oblique roller 72b. And is dropped to the start end side of the lifting conveyor 73. The main root N dropped on the lifting conveyor 73 is transferred obliquely upward to the right. During the transfer, the main root N is subjected to a selection action on the transport conveyor, and the selected non-defective product is stored in the storage bag 54.

Here, each part is defined about the carrot as a root vegetable which the root vegetable harvesting machine which concerns on this invention harvests using FIG.
As shown in FIG. 5, carrots are classified into stems and leaves K and main roots N. Further, the foliage K is defined by being distinguished into an upper part K1 and a root part K2. Further, the periphery of the upper end of the main root N is defined as a shoulder N1, and the narrow root at the lower end of the main root N is defined as a tail N2. Here, the sandwiching and transporting endless belts 25 and 25 sandwich the upper portion K1 and transport carrots rearward and upward. The tail portion N2 is cut by the root cutting device 10 disposed below the nipping and transporting endless belts 25 and 25. The shoulder alignment devices 100 and 150 on the subsequent process side of the clamping and transporting endless bands 25 and 25 simultaneously clamp the root portion K2 with a clamping force weaker than the clamping force for clamping the upper portion K1. And the height position of the shoulder part N1 of root vegetables will follow the shoulder alignment apparatus 100 * 150 as it is conveyed. That is, the shoulder alignment devices 100 and 150 are devices that uniformly align the height position of the transferred carrot shoulder N1 before being transferred to the foliage cutting device 11. Moreover, the foliage cutting device 11 cuts so that the length of the foliage K after cutting becomes a uniform length (about several millimeters) from the shoulder N1.

  Here, the first shoulder alignment device 100 according to the present invention will be described in detail with reference to FIGS. 6 and 7. 6 and 7, the direction of the solid arrow is the forward direction. In FIG. 6, the direction indicated by the broken line arrow from the center line (indicated by the broken line in the figure) is the outward direction.

  As shown in FIG. 6, the first shoulder alignment device 100 includes left and right clamping units 110 </ b> R and 110 </ b> L, an urging unit 130, a stretching unit 140, and the like. The sandwiching portion 110R is supported by the stretching portion 140. On the other hand, the clamping part 110L is supported by the biasing part 130.

  110 L of clamping parts are comprised from the cog belt (toothed belt) 113 as a shoulder alignment endless body, the drive pulley 111 as a rotation body of a front side, and the driven pulley 112 as a rotation body of a rear side. The drive pulley 111 and the driven pulley 112 are rotatably arranged in order of the drive pulley 111 and the driven pulley 112 from the front to the rear. Further, the drive pulley 111 is driven by the rotation transmission of the pinching and transporting endless belt mechanisms 44b and 44b. The cog belt 113 is wound and stretched around the drive pulley 111 and the driven pulley 112. Further, the cog belt 113 is wound with the tooth side facing outward so that the foliage K is easily displaced in the up and down direction by the cog belts 113 and 113 arranged to face each other. Can be transported to. As a matter to be noted here, a pulley having a diameter smaller than that of the driving pulley 111 is used as the diameter of the driven pulley 112. Further, the cog belts 113 on the left and right center sides in the transfer direction are arranged so as to be substantially parallel. Note that the sandwiching portion 110R has the same configuration as the sandwiching portion 110L, and a description thereof will be omitted.

  The tension unit 140 includes an arm 141, a spring 143 as an elastic body, a transfer frame 144, and a spring support member 145. The arm 141 is arranged with its longitudinal direction substantially parallel to the left-right direction. Further, the arm 141 is pivotally supported by the transfer frame 144 in the middle by the fulcrum b. The transfer frame 144 forms a fulcrum b on the inner side, and the outer side is pulled out and supported by the working unit B. The spring support member 145 is disposed with its longitudinal direction inclined backward in the substantially left-right direction. The spring support member 145 can adjust the elastic force Z of the spring 143 by changing the support length with a nut. In the front-rear direction, the spring 143 is supported by the transfer frame 144 with respect to the front end 143a via the support member 145, and the rear end 143b is supported by the arm 141.

  By adopting such a configuration, the following effects can be obtained. That is, the elastic force Z (1R) of the spring 143 gives the arm 141 a biasing moment Y (1R) of counterclockwise rotation in plan view with the fulcrum b as the center, and the tension force X (1R) on the driven pulley 112. Is granted. Further, since the diameter of the drive pulleys 111 and 111 on the foliage entrance side (front side) is large and the distance of the common tangent line between the drive pulleys 111 and 111 is long, the thick foliage K can be easily taken in. Furthermore, since the driven pulleys 112 and 112 have a small diameter, the driven pulleys 112 and 112 can be close to the foliage cutting device 11 to increase cutting accuracy. Note that the configuration and action of the tension member 140 are conventional techniques.

  As shown in FIGS. 6 and 7, the urging unit 130 includes a first arm 131, a second arm 132, a spring 133, a transfer frame 134, and the like. The first arm 131 is disposed so that its longitudinal direction is substantially parallel to the left-right direction. The first arm 131 has a fulcrum a (the pivot shaft of the driven pulley 112) at the inner end (center side) and a fulcrum b (the pivot shaft of the first arm 131) at the approximate center. That is, the driven pulley 112 is pivotally supported at one end of the first arm 131, the spring 133 is locked at the other end, and the tip of the second arm 132 is pivotally supported in the middle portion. The second arm 132 is formed in a substantially L shape including a long side portion 132m and a short side portion 132n in plan view. The long side portion 132m is formed in an L shape in a cross-sectional view, and the longitudinal direction is arranged substantially parallel to the front-rear direction. The long side portion 132m has a fulcrum c at the front end and a fulcrum b at the rear end. The short side portion 132n is disposed so that its longitudinal direction is substantially parallel to the left-right direction. Further, the short side portion 132n supports the front end 133a of the spring 133 via a support member 135 at the outer end. In the front-rear direction, the spring 133 is supported by the short side portion 132n of the front end 133a via the support member 135, and the rear end 133b is supported by the first arm 131. The transfer frame 134 has a fulcrum c formed on the inner side, and the outer side is pulled out and supported by the working unit B. That is, the second arm 132 is arranged in the front-rear direction on the outer side of the cog belt 113, and is pivotally supported by the first arm 131 at the front end (rear part), pivotally supported by the transfer frame 134 at the front part of the middle part, and at the other end. The spring 133 is locked, and the driven pulley 112 on the rear side is biased by the spring 133 so as to rotate about the rotation fulcrum c toward the left and right central sides in the transfer direction.

  The stoppers 136 and 137 are provided between the transfer frame 134 and the second arm 132 in order to restrict the rotation range of the second arm 132. Here, the stopper 136 restricts the rotation of the second arm 132 toward the left and right central sides in the transfer direction. The stopper 136 is constituted by a bolt, one end is fixed to the transfer frame 134 so that the position can be adjusted, and the other end is configured to abut the bolt head on the side surface of the second arm 132. On the other hand, the stopper 137 restricts the rotation of the second arm 132 to the left and right outside in the transfer direction. The stopper 137 is configured to penetrate and fix the pin vertically in the transfer frame 134 outside the second arm 132. However, the urging unit 130 may be provided at least on the left and right sides. In addition, when the urging | biasing part 130 is set as the structure arrange | positioned on both right-and-left both sides, since the range which spreads on both right-and-left sides can be increased, it can respond also to the thick root vegetables of the stem K.

  By adopting such a configuration, the following effects can be obtained. First, the elastic force Z (1L) of the spring 133 gives the first arm 131 a biasing moment Y (1LB) of right rotation in a plan view around the rotation fulcrum b, and the tension force applied to the driven pulley 112. X (1LA) is assigned. Further, the elastic force Z (1L) of the spring 133 gives the second arm 132 a counterclockwise urging moment Y (1LA) in a plan view around the rotation fulcrum c, and the first arm 131 moves in the left-right direction. , An urging force X (1 LB) is applied toward the center. That is, the elastic force Z (1L) of the spring 133 can simultaneously apply the clamping force X (1LB) and the tension force X (1LA) to the driven pulley 112.

  In this way, the following effects are obtained. That is, since the driven pulley 112 can be rotated left and right and the cog belt 113 bends, it can follow the size of the root vegetable stems and leaves K, eliminate excessive pulling or insufficient pulling by the pull-out transfer device 8, and improve shoulder alignment accuracy. Can be improved. Also. Even if the root vegetables of large stems and leaves K are transferred in front of the root vegetables just before cutting, the width of the root vegetables is widened so that there is no height deviation of the root vegetables, and the stems and leaves K can be positioned accurately when introduced into the stem and leaf cutting device 11. The shoulder N1 can be cut at a predetermined height. Moreover, since the diameter of the driven pulley 112 is small, the dead space between the rear part of the cog belts 113 and 113 and the foliage cutting device 11 can be reduced, the root vegetable transfer posture is stabilized, and the cutting accuracy of the shoulder N1 is improved. it can. Furthermore, since the tension force X1 that is the belt tensioning action and the clamping force X2 that is the clamping biasing action of the foliage K can be simultaneously energized by the single spring 133, the first shoulder aligner 100 can be inexpensively configured with a simple configuration. Can be made. Further, when the driven pulley 112 has a small diameter, the second arm 132 is disposed on the side of the driven pulley 112, and the first shoulder aligner 100 can be designed in a space-saving manner.

  Here, the second shoulder aligner 150 will be described in detail with reference to FIGS. 8 and 9. 8 and 9, the direction of the solid arrow is the forward direction. In FIG. 8, the direction indicated by the broken line arrow from the center line (indicated by the broken line in the figure) is the outward direction.

  As shown in FIG. 8, the second shoulder aligner 150 includes guide rods 151 and 151 and an urging mechanism 160. One guide rod 151 is supported and fixed to the pull-out working part B by a guide frame 152. The other guide rod 151 is supported by the pulling-out working part B by an urging mechanism 160 and is movable in parallel.

  As shown in FIGS. 8 and 9, the urging mechanism 160 includes an elastic mechanism 170, a front link mechanism 180F, and a rear link mechanism 180R.

  The elastic mechanism 170 includes a guide frame 172, a spring 171 as an elastic body, and a connecting rod 173. The guide frame 172 has fulcrums b (F) and b (R) formed on the left and right central sides in the transfer direction, and is supported by the working portion B by pulling out the left and right outer sides in the transfer direction. The spring 171 is disposed in the front-rear direction, the front end 171F is supported by one end (front end) of the connecting rod 173, and the rear end 171R is supported by the guide frame 172 via the spring support member 174. The connecting rod 173 has a front end 171F supported by one end of a spring 171 and has fulcrums a (F) and a (R) that pivotally support bell crank arms 181 and 181 described later (see FIG. 8).

  The rear link mechanism 180R includes a bell crank arm 181 and a stay 182F. The bell crank arm 181 is formed in an L shape, and has a fulcrum a (R) at the outer end, a fulcrum b (R) at the center, and a fulcrum c (R) at the front end. The stay 182F is disposed substantially parallel to the front stay 182 with the longitudinal direction being the left-right direction. The stay 182F has a fulcrum c (R) at the outer end and a position adjusting portion α at the inner end. The stay 182F is pivotally supported at the front end of the bell crank arm 181 by a fulcrum c (R), and the central portion of the bell crank arm 181 is pivotally supported by the guide frame 172 by a fulcrum b (R). It is pivotally supported by the connecting rod 173 by (R). The front link mechanism 180F is the same as the rear link mechanism 180R except that the position adjustment unit α is not configured. The guide frame 190 and the stay 182F are integrated into the stay 182, and thus the description thereof is omitted. Each fulcrum a (F), a (R) to c (F), c (R) described above is constituted by a support shaft.

  The guide rod 151 is fixed by a stay 182 at the front and a guide frame 190 at the rear before and after the outer surface. In the position adjustment unit α, a stay 182F is fixed to a long hole (not shown) formed in the guide frame 190 by a bolt 191. That is, one side of the bell crank arms 181 and 181 is pivotally supported on both sides of the connecting rod 173 to constitute a parallel link, and the other side is assembled to be pivotally supported on a stay fixed to the guide rod 151. In this case, if there is no portion that absorbs the dimensional error in the left-right direction, the guide rod 151 cannot be smoothly rotated by the parallel link. Accordingly, a position adjusting portion α is provided, and when assembling, the bolt 191 is loosened and temporarily turned to rotate, and the position to be rotated smoothly is obtained and fixed, and the smooth bell crank arms 181 and 181 are rotated. You can get movement. Note that the position adjusting portion α can be disposed on both the front and rear sides.

  The stopper 175 is provided between the bell crank arm 181 and the guide frame 172 so as to restrict the rotation range of the bell crank arm 181. The stopper 175 has a structure in which a long hole is provided in the stay, one end of the stay is fixed to the guide frame 172, and a pin erected from the bell crank arm 181 is inserted into the long hole on the other side.

  The urging mechanism 160 may be configured to be provided on at least one of the left and right sides. Moreover, it is also possible to adopt a configuration in which they are arranged on both the left and right sides. In this case, the range extending to the left and right sides can be increased, so that it is possible to cope with thick root vegetables with stems and leaves K.

  By adopting such a configuration, the following effects can be obtained. That is, the elastic force Z (2) of the spring 171 gives an urging force Y (2) that operates the connecting rod 173 toward the front, and the urging moment of the right rotation in a plan view is applied to each of the bell crank arms 181 and 181. X (2F) · X (2R) is applied, and urging forces W (2F) · W (2R) acting toward the left and right centers in the transfer direction are applied to the respective stays 182F · 182. Here, as a matter to be noted, the same force is applied to the urging force W · W. That is, a clamping force is always applied to the guide rod 151 toward the center in the left-right direction.

  In this way, the following effects are obtained. That is, since the width of the left and right guide rods 151 and 151 follows the size of the stem K of the root vegetable, the root vegetable can be transferred continuously regardless of the size of the stem K. That is, the height of the shoulder portion N1 of the root vegetables can be made constant. Further, since the guide rods 151 and 151 are translated in a simple configuration according to the size of the foliage K, the distance between the left and right guide rods 151 and 151 does not become extremely wide in the front and rear, and can be stably transferred. . Furthermore, since the dimensional error in the left-right direction is absorbed by the position adjustment unit α, the second shoulder aligner 150 can be easily manufactured.

  In this manner, the lower shoulder rear device 150 aligns the approximate position of the shoulder portion N1 in the root vegetables with the second shoulder aligner 150, and the first shoulder aligner 100 disposed at the rear portion thereof accurately corrects the shoulder. The position of the part N1 is aligned. That is, since the second shoulder aligning device 150 is the guide rods 151 and 151, the holding range in the vertical direction is narrow, and the foliage K is relatively easy to move up and down, so that the shoulder N1 can be roughly positioned. Since the second shoulder aligner 150 is clamped by the cog belts 113 and 113, the vertical clamping range is increased, and the position in the aligned state can be reliably held, and the foliage K is cut at an accurate position in the subsequent process. can do.

Here, the remaining leaf processing device 72 will be described in detail with reference to FIGS. 10 and 11.
As described above, the remaining leaf processing device 72 is provided with the flat belt 72a in the front-rear direction below the foliage cutting device 11 below the rear portion of the pulling and transferring device 8. The flat belt 72a is provided with rollers whose axial centers are arranged in parallel in the front-rear direction. The flat belt 72a is wound between the rollers, and the main root N after cutting the foliage falls on the flat belt 72a. Are arranged as follows. An oblique roller 72b is arranged at the rear of the dropping position, and the oblique roller 72b is arranged with a predetermined gap from the transfer surface, which is the upper surface of the flat belt 72a, and is arranged obliquely from the left front to the right rear. It is configured.

  Further, the remaining leaf processing device 72 is provided with a pair of left and right conveyor frames 71 and 71 parallel to the longitudinal direction of the machine body, and the rollers are disposed on both front and rear sides of the conveyor frames 71 and 71. The mounting brackets 76 are fixed to the front lower side of the oblique roller 72b inside the middle part of the front and rear. A pivot shaft 78 is installed between the mounting brackets 76 and 76 in parallel with the oblique roller 72b, and a belt receiving member 80 is disposed on the pivot shaft 78 below and in parallel with the oblique roller 72b. Both sides are pivotally supported. The belt receiving member 80 comprises a frame having a U-shape in cross section with an open portion facing downward, and is located inside the remaining leaf processing device 72, that is, between the upper and lower transfer portions and the non-transfer portion of the flat belt 72a. Are arranged obliquely between the left and right conveyor frames 71. That is, the belt receiving member 80 is disposed as a pressing member that presses against the oblique roller 72b side from below the transfer surface.

Here, the cushion 201 and the overflow rubber 210 in the remaining leaf processing device 72 will be described in detail with reference to FIGS. 10 and 11.
As shown in FIGS. 10 and 11, the cushion 201 is a member that guides and drops the main root N obtained by cutting the foliage K by the foliage cutting device 11 without damaging the remaining leaf processing device 72. The cushion 201 is hooked on the cushion support member 202. The cushion support member 202 is formed in a substantially L shape in plan view. Further, the cushion support member 202 is disposed at the rear and outer periphery below the first shoulder aligning device 100 and the foliage cutting device 11.

  The material of the cushion 201 is an elastic body. In this embodiment, the cushion 201 is formed of a rubber sheet having a thickness. In addition, the cushion 201 has a notch formed downward from the corner portion P of the cushion support member 202 in plan view, and a front and rear portion 201a and a left and right portion 201b are formed. Since the front and rear portions 201a and the left and right portions 201b are formed at a height equal to or higher than the height from the cushion support material 202 to the flat belt 72a, the cushion support material hangs forward and right from the cushion support material 202, respectively. 202 is hooked.

  By adopting such a configuration, the cushion 201 can be realized with a simple configuration in which a notch is provided at the center of one rubber sheet and it is bent into an L shape. Further, the lower part of the cushion 201 is bent by abutting against an after-mentioned overflow rubber 210a, and the front and rear parts 201a and the left and right parts 201b are overlapped to prevent a gap, thereby preventing the main root N from being leaked. And the impact which falls to the residual leaf processing apparatus 72 about the main root N which cut the foliage K by the foliage cutting apparatus 11 can be relieved. That is, the main root N that falls is softly received by the front and rear portions 201a and the left and right portions 201b, so that damage to the main root N can be reduced. Further, it is possible to prevent the main root N from being transferred beyond the oblique roller 72b in the remaining leaf processing device 72.

  As shown in FIGS. 10 and 11, the overflow rubbers 210 a and 210 b are attached to the support stay 70 by pressing plates 211 a and 211 b, respectively. The overflow rubbers 210a and 210b are formed of an elastic body with curled tips. Further, the overflow rubbers 210a and 210b are arranged in parallel with the support stay 70 in a plan view. Further, the overflow rubbers 210a and 210b are inclined forward and upward in the cross-sectional view because the tips are lifted by the oblique rollers 72b. Therefore, the overflow rubbers 210a and 210b are configured to support the cushion front and rear portions 201a in the forward direction. Here, as a matter to be noted, the attachment hole of the overflow rubber 210a is formed as a long hole (or a plurality of holes) long in the front-rear direction. That is, the attachment position of the overflow rubber 210a with respect to the support stay 70 can be adjusted in the front-rear direction.

  By setting it as such a structure, the length which protrudes beyond the diagonal roller 72b of the overflow rubber | gum 210a can be adjusted. That is, since the height of the overflow rubber 210a is changed by changing the attachment position, the contact position with the lower surface of the cushion front and rear portion 201a is changed, and the forward inclination angle can be changed. In this way, even when the field conditions (high or low of straw) are changed, an optimal dropping posture is always obtained, and a harvesting operation without damage can be performed with high accuracy.

The side view which shows the whole structure of the carrot harvester based on the Example of this invention. Similarly a schematic plan view. The front schematic diagram. Similarly transmission diagram. The side view which shows the carrot to harvest. The top view which shows the whole structure of a 1st shoulder alignment apparatus. Similarly side view. The top view which shows the whole structure of a 2nd shoulder alignment apparatus. Similarly side view. The top view which shows the whole structure of a cushion. Similarly side view.

Explanation of symbols

A Self-propelled vehicle body B Pull-up work part C Sorting conveyor part D Harvested table K Stem and leaves K1 Upper part K2 Root part N Main root N1 Shoulder part N2 Tail 8 Pull-up and transfer device 8a Nipping and transferring route 11 Stem and leaf cutting device 100 First shoulder alignment Device 110L / 110R Holding portion 111 Drive pulley 112 Driven pulley 113 Cog belt 131 First arm 132 Second arm 133 Spring 150 Second shoulder aligner 151 Guide rod 160 Energizing mechanism 171 Spring 173 Connecting rod 181 Bell crank arm 182 Stay

Claims (3)

A root vegetable planted in the field is sandwiched between a pair of left and right endless bodies and pulled out while being transferred backwards. A pull-up transfer device is provided on the self-propelled vehicle body, and a foliage is cut below the rear of the transfer path of the pull-up transfer device. In a harvesting machine provided with a device and a shoulder alignment device in front of the foliage cutting device,
The shoulder aligner includes a pair of left and right endless bodies, and a rotating body before and after winding the endless body,
The rear rotating body on at least one of the left and right sides is configured to be rotatable left and right around an axis that supports the front rotating body, and is urged by an elastic body to the left and right center side of the transfer path. Harvester. The harvester according to claim 1, wherein the diameter of the rear rotating body is smaller than the diameter of the front rotating body. The harvesting machine according to claim 1 or 2,
The support shaft of the rear rotating body is supported on one end of a first arm arranged in the left-right direction, and the other side of the first arm is supported on one end of a second arm arranged in the front-rear direction. The other end of the second arm is pivotally supported by the transfer frame at the side of the front rotating body, and an elastic body is interposed between the other end of the second arm and the other end of the first arm,
The harvesting machine according to claim 1, wherein the rear rotating body is biased to the rear side and the right and left central sides of the transfer path.

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