JP2006288226A - Root vegetable harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To change the height of a container 119, which is used in collecting root vegetable crops, in a relatively wide range. <P>SOLUTION: In the root vegetable harvester with which root vegetable crops are pulled out from a field, conveyed to a machine body 2, their leaf and stem parts are cut off, the root vegetable parts are fed to the conveying start end of a separation conveyor 75, the root vegetable parts fed to the separation conveyor are conveyed by the separation conveyor 75 in a specific straight line direction to a conveying end, dropped in the container 119, the conveying end of the separation conveyor 75 can be changed in position around a horizontal shaft 109 perpendicular to the specific direction in the vicinity of the conveying start end. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a root crop harvesting machine for harvesting root crops such as garlic, onion or lily.

  After extracting the root vegetable crop from the field and transporting it to the machine body, cutting the leaf stem part, supplying the root vegetable part to the transport start end of the sorting conveyor, and further the root vegetable part supplied to the sorting conveyor to the transport end A root crop harvesting machine that operates so as to drop into a container after being conveyed in a straight line in a specific direction is known (see Patent Document 1).

  In the harvesting machine, the sorting conveyor is mounted on the base stand with the inclination angle in the conveying direction being fixed. A container for collecting root vegetable crops is lower than the height of the conveying end of the sorting conveyor, and the root vegetable crops that freely fall from the conveying end are received in the container. In addition, the inclination angle of the discharge chute for discharging the leaf stem portion separated from the root vegetable crop to the field is about 42 degrees.

JP 2004-194601 A

In the conventional root vegetable harvesting machine described above, the height range of the container used for collecting root vegetable crops is limited to a relatively small range, and the leaf stem portion separated from the root vegetable crops is used in the field. The inclination angle in the front-rear direction of the leaflet chute for discharging is insufficient, and the leaf stem portion stagnate in the middle of the leaflet chute.
An object of the present invention is to provide a root vegetable harvesting machine that can solve these problems.

In order to achieve the above object, the present invention is as follows.
That is, the root vegetable harvesting machine according to the present invention, as described in claim 1, picks up the root vegetable crop from the field and transports it on the machine body, cuts out the leaf stem portion thereof, and then uses the root vegetable portion as the transport start end of the sorting conveyor. In the root vegetable harvesting machine that operates to feed and further drop the root vegetable part supplied to the sorting vegetable to the end of the conveyance in a straight line along a specific direction and then drop into the container. The position of the end can be changed around the horizontal axis perpendicular to the specific direction in the vicinity of the conveyance start end.

The above-described invention is preferably embodied as follows.
That is, as described in claim 2, the side processing unit is extracted around the first left-right axis after the root vegetable crop is picked up from the field, transported onto the machine body, the leaf stem is cut off, and then supplied to the transport start end of the sorting conveyor. A root vegetable harvesting machine provided so as to be able to swing up and down, and a leaf chute for discharging a leaf stem portion excised from the root vegetable crop to the field from the rear side of the side processing unit via a second horizontal axis. The rear container support base is extended from the rear end portion of the base base so as to be swingable up and down via a third horizontal axis, and the rear container support base is attached to the rear container support base. It is set as the structure which provided the support guide part for supporting the lower surface of a leaf discharging chute.

  In addition, as described in claim 3, under the state where the bottom surface portion of the leaflet chute is supported by the support guide portion, the inclination angle in the front-rear direction of the leaflet chute is 45 degrees or more during the harvesting operation. It is assumed that the configuration is retained.

  According to a fourth aspect of the present invention, a positioning hook mechanism is formed between the base platform and the rear container platform, and the rear container platform is rotated around a third horizontal axis from the harvesting operation position. By swinging upward, the rear container base does not swing downward from a specific position above even if no manual operation force is applied to the positioning hook mechanism, and swings upward from the specific position. The rear container table, which is locked at the specific position, swings to the harvesting work position by applying a manual operation force to the positioning hook mechanism. It is assumed that it is configured.

According to the above-described present invention, the following effects can be obtained.
That is, according to the first aspect, the sorting operation can be performed in the process of transporting the root vegetable portion by the sorting conveyor, and the following effects are obtained, that is, for collecting the root vegetable portion. When changing the container to a different height, the height of the transfer end of the sorting conveyor can be optimized for that container, so the height of the container that can be used to collect root vegetables The change range can be increased, and the root vegetable part can be collected so as to drop from the lowest possible position in the container, so that it is possible to prevent a drop mark from being generated in the harvested root vegetable part. In addition, the use of tall containers can reduce the frequency of container replacement.

  According to the second aspect of the present invention, even if the fuselage is greatly tilted back and forth and the rear container stand comes into contact with the ground, the rear container stand will escape upward without any trouble, and therefore the rear container stand can be made lower than before. it can. And by lowering the rear container stand, the inclination angle in the front-rear direction of the leaf chutes during normal harvesting work is increased, so that the leaf stem part that has reached the bottom surface of the leaf chutes stays without sliding down. It will not occur.

  According to what was described in Claim 3, the leaf stem part which reached | attained the leaf shoot can be quickly slid back and dropped to the field.

  According to the fourth aspect of the present invention, the rear container table is locked at a specific position above by a simple operation of swinging the rear container table upward from the harvesting operation position around the third left-right axis. In addition, even if the rear container stand touches down in a state where it is locked at a specific position above, it will escape upward without any trouble, and the machine will move accurately in the field and harvest work Is efficient and easy to handle.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a side view of a root vegetable harvester showing an example of the present invention, FIG. 2 is a plan view of the root vegetable harvester, FIG. 3 is a front view of the root vegetable harvester, and FIG. 4 is a rear view of the root vegetable harvester. 5 is a plan view showing a rear portion of the holding and conveying device of the root vegetable harvesting machine, FIG. 6 is a side view showing a mud dropping device and the like of the root vegetable harvesting machine, and FIG. 7 is a plan view showing a part of the mud dropping device. 8 is a front view explanatory view showing a star wheel and a rotating brush of the mud dropping apparatus, FIG. 9 is a side view showing a rear part of the side processing unit of the root vegetable harvesting machine, and FIG. 10 is a rear view of the side processing unit. A is a plan view, B is a side view, FIG. 11 is a plan view showing the arrangement of belts and pulleys at the rear of the side processing unit, and FIG. 12 is a belt and pulleys at the rear of the side processing unit. Fig. 13 is a plan view showing the arrangement of the chain, etc. FIG. 14 is a rear sectional view showing a pulley around the rear part of the side processing unit and the rear part of the chain, and FIG. 14 shows a pulley around the rear part of the belt at the rear part of the side processing unit. Shown A is a plan view, B is a side view, FIG. 15 is a side view showing a rear portion of the root vegetable harvesting machine, and FIG. 16 is an explanatory side view in which a part of FIG. 15 is enlarged.

  As shown in FIGS. 1 to 4, a root vegetable harvesting machine (hereinafter referred to as a harvesting machine) according to the present invention includes a self-propelled vehicle body (airframe) 2 having a crawler-type traveling device 1 and having a self-propelling function. Has been. As described above, the root crops 3 such as garlic are planted in the cocoon, but this harvester first holds the leaf stem portion 3a of the root crop 3 and pulls out the root crop portion 3b and suspends it. While being kept in the lowered posture, while being transported rearward and upward, the root 3c and the leaf stem portion 3a extending downward from the bottom surface portion of the root vegetable portion 3b are cut, and the remaining root vegetable portion 3b is harvested. The harvesting operation is performed while the body 2 travels in the direction along the ridge.

  While the vehicle body 2 is traveling, the leaf stem portion 3a to be harvested from now and the leaf stem portion 3a that is not to be harvested are separated by a severing device 5 that rotates the tine 4 backward in a vertical plane in a rearward rising inclination direction. Only the leaf stem portion 3a to be harvested is scraped backward by a scraping device 7 comprising a tine 6 that rotates backward in a plane that rises backward. The leaf stem portion 3a scraped by the scraping device 7 comes from a pair of belts 8 that rotate backward together while sandwiching the leaf stem portion 3a between the opposing surfaces within a rearwardly inclined plane provided at the rear thereof. The root vegetable portion 3b is pulled out from the ground by being sandwiched by the sandwiching and conveying device 9 as described above.

  Each belt 8 is an endless body and is wound around a driving pulley 9a provided at the rear part of a side processing unit 12 described later. Further, as shown in FIG. 5, a corresponding tension pulley 9b is provided in the vicinity of the drive pulley 9a, and the tension pulley 9b presses the slack side front and rear facing portion of the endless body by the elasticity of the spring 9c. A tension force is applied to the endless body, which contributes to preventing the endless body from slipping on the drive pulley 9a.

  In the lower part of the starting end of the holding and conveying device 9, there is provided a vibration device 10 in which a subsoiler 10a is inserted into the soil to loosen the soil around the root vegetable portion 3b. Pulling out is possible without strengthening.

  The extracted root vegetable part 3b is conveyed together with the leaf stem part 3a rearward and upward by the sandwiching and conveying device 9, but the root vegetable crop 3 at this time is suspended almost vertically by the sandwiching and conveying device 9 It is a posture. In addition, the clamping position of the leaf stem part 3a depends on the starting end height of the clamping conveyance device 9, and this height needs to be appropriately changed.

  Therefore, the holding and conveying device 9, the shoulder aligning device 15, the root cutting unit 13, the leaf stem cutting unit 14, and the like are configured in one side processing unit 12, and the side processing unit 12 is provided in the machine body 2. Adjustment is made by rotating in the vertical direction around the fulcrum shaft 16.

  The set position of the side processing unit 12 around the fulcrum shaft 16, that is, the starting end height of the nipping and conveying device 9 is adjusted to the height of the gauge wheel 11 that is provided at the front of the machine body 2 and runs on the bottom of the machine body 2. To do. In the middle of the sandwiching and transporting device 9, a pair of belts that both move backward in a plane that rises more slowly than the sandwiching and transporting device 9 and moves backward while sandwiching the leaf stem portion 3a between the opposing surfaces. A shoulder aligning device 15 comprising 15a is provided, and the belts 15a, 15a press the shoulder of the root vegetable part 3b being conveyed and push it down to a predetermined height.

  Under the shoulder aligning device 15, as shown in FIG. 6, the root vegetable part sliding mud drop device having a pair of left and right first rotating bodies 17 installed and rotated substantially parallel to the belt 8 of the holding and conveying device 9. 18 is provided and acts on the root vegetable portion 3b and the root 3c aligned with each other to remove mud attached thereto. Moreover, in this example, the front mud drop which has the front rotary body 19 rotated in the clockwise direction around the left-right rotation shaft 19a in FIG. The apparatus 20 is provided, and it acts on the bottom part of the root vegetable part 3b and the root 3c before reaching the root vegetable part sliding contact mud dropping apparatus 18 to drop mud attached thereto in advance.

  At this time, the front rotating body 19 is formed as a star wheel as shown in the figure made of an elastic material such as rubber or a polygonal roller made of the same material, and is intermittently applied to the root 3c by being rotated. The mud is effectively dropped by applying a strong striking force.

  The root vegetable part sliding mud dropping device 18 will be described in detail with reference to FIG. 7 as well. The mud dropping device 18 includes a transport path of the sandwiching and transporting device 9 at a position below the belt 8 of the sandwiching and transporting device 9. A pair of left and right first rotating shafts 21 are arranged in parallel to the belt 8 with the vertical surface interposed therebetween, and the first rotating body 17 is attached to the first rotating shaft 21. The first rotating body 17 in this example is a star wheel 17a made of an elastic material such as rubber. However, the first rotating body 17 may be a polygonal roller made of a similar material, or a nylon brim on the outer periphery of the drum. It may be like a brush with a plant. Each first rotating shaft 21 extends rearward and upward from a driving case 22 supported by the side processing unit 12 and is rotatably held by the driving case 22.

  A second rotary shaft 23 is engaged with the rear end of each first rotary shaft 21 so as to extend rearward and upward. The first rotary shaft 21 and the second rotary shaft 23 are coupled to each other. The rear end portion of the first rotation shaft 21 is inserted into a coupling hole formed on the front end surface of the second rotation shaft 23 in a state where relative rotation is restricted. The rear end of each second rotary shaft 23 is rotatably supported via a bearing portion 24 that is detachably fixed to the frame 12a of the side processing unit 12.

  A second rotating body 25 is fixedly provided on each second rotating shaft 23. The second rotating body 25 of this example is a brush in which nylon bristles or the like are implanted on the outer periphery of the second rotating shaft 23. However, as long as it is a cylindrical body that can be elastically deformed, the same as described above. It may be like a starfoil or polygonal roller. The second rotating body 25 needs to be cleaned or replaced occasionally. In such a case, the bearing 24 is removed from the frame 12a of the side processing unit 12, and then the second rotating body 25 is fixed. After the second rotating shaft 23 is displaced rearward and separated from the first rotating shaft 21, the second rotating shaft 23 is taken out of the side processing unit 12, thereby facilitating cleaning and replacement.

  Both the first rotator 21 and the second rotator 25 are longitudinally rotated in the conveyance surface of the root vegetable crop 3 and act on the root 3c of the root vegetable portion 3b. In this case, the first rotator 21 forms the first rotator 21. The outer circumference of the star foil 17a is set so as to act on the bottom of the root vegetable portion 3b, and the rotating brush constituting the second rotating body 25 expands the range of taking in the root vegetable portion 3b toward the rear. It is set so that it is lifted toward the back. In other words, the rotary brush 25 is configured such that, in a side view, the overlapping range becomes larger toward the rear with respect to the movement locus of the root vegetable portion 3b, so that mud can be dropped gradually over a wide range. Is adjusted by changing the angle of the first rotating shaft 21. In other words, the perspective can be adjusted with respect to the position of the root vegetable in the conveyance direction.

  Further, as shown in FIG. 8, the left and right first rotating bodies 17 are provided with a plurality of star-foiled star wheels 17a (three in this example) with projections a1 and recesses a2. However, at this time, the projecting portion a1 of one star wheel 17a is arranged with a diameter, a distance between the cores, and a phase so as to enter the recessed portion a2 of the other star wheel 17a beyond the conveying path of the root vegetable crop 3. Thus, the entire root 3c is surely hit with both protrusions a1. The left and right rotating brushes 25 are set to have a diameter and a center-to-core distance so as to enter each other's rotation radius, and the root 3c is sandwiched between the two to crush. The rotation directions of the left and right star wheels 17a and the left and right rotating brushes 25 are set so that the roots 3c are greatly lowered from the top to the bottom, and in particular, the roots 3c ground with the rotating brushes 25 are narrowed down. Will be shaped and convenient for subsequent cutting. For these reasons, the star foil 17a and the rotating brush 25 are made of a material that does not damage the root vegetable part 3b, such as soft resin or rubber.

  In order to cause the star wheel 17a and the rotating brush 25 to perform the above-described actions, both of them need to be forcibly rotated. However, the drive configuration in this example is not changed even if the height of the side processing unit 12 is changed. The power of the fulcrum shaft 16, which is unchanged, is guided to the left-right input shaft 27 of the drive case 22 provided at a right angle to the body 2 in front of the first rotating shaft 21 by the first pulley / belt mechanism 26. The power transmitted to the left-right input shaft 27 is transmitted to the first rotating shaft 21 by the bevel gear mechanism in the drive case 22 and further transmitted to the second rotating shaft 23.

  At this time, the first pulley / belt mechanism 26 hangs an endless belt 30 between a pulley 28 fixed to the fulcrum shaft 16 and a pulley 29 fixed to the left-right input shaft 27 and guides the belt 30. An intermediate pulley 31 is provided, and a tension pulley 32 that is displaced in a specific direction by the elasticity of the spring and presses the outer peripheral surface of the belt 30 is provided.

  Further, the front rotating body 19 of the forward mud dropping device 20 is adapted to transmit the power of the fulcrum shaft 16 from the first pulley / belt mechanism 26 via the second pulley / belt mechanism 33. The second pulley / belt mechanism 33 is provided at a specific position in the vicinity of the rear side of the intermediate pulley 31 via a support shaft 34 and is fixed to the input side pulley 35 concentrically with the input side pulley 35 pressed against the outer peripheral surface of the belt 30. A belt 38 wound around the output-side pulley 36, the output-side pulley 36, and a pulley 37 fixed to the right-and-left rotating shaft 19a, and the outer periphery of the belt 38 can be displaced in a specific direction by the elasticity of the spring. It comprises a tension pulley 39 that is pressed against the surface and applies tension to the belt 38.

  At this time, it is preferable that the winding angle of the belt 38 with respect to the input side pulley 36 can be changed as necessary. Specifically, the position where the input side pulley 35 is installed can be changed. Or the position where the intermediate pulley 31 is installed can be changed.

  Next, the structure of the rear upper part of the side processing unit 12 will be described in detail with reference to FIGS. Here, as shown in FIG. 9, a root cutting part 13 and a leaf stem cutting part 14 are formed, and the root cutting part 13 performs a nipping and conveying of the root cutting device 40 for cutting the root 3c and the leaf stem part 3a. The second holding and conveying device 41 that takes over from the holding and conveying device 9 and leads to the root cutting device 40 is provided, and the leaf and stem cutting unit 14 includes a leaf and stem cutting device 42 that cuts the leaf and stem portion 3a, It is provided with a leaf discharging device 72 that takes over the nipping and conveying of the stem portion 3a from the nipping and conveying device 9 and guides it to the root cutting device 40 to discharge the cut leaf stem portion 3a.

  As shown in FIG. 10, the rear frame structure for supporting the root cutting part 13 and the leaf stem cutting part 14 is a pair of left and right vertical parts fixed to the left and right sides of the rear upper part of the frame 12 a of the side processing unit 12. A pair of left and right front-back support members 44 that are cantilevered from the support plate 43 to the rear side, and a rear portal-type tube member 45 that extends obliquely downward from the pair of left and right vertical support plates 43; A left-side coupling pipe member 46a in which a portion in the middle of the length of the left side portion of the tube member 45 and a rear end portion of the left front-back support member 44 are coupled, and a portion in the middle of the length of the right side portion of the tube member 45 and the right side A right-hand coupling tube member 46b joined to the rear end portion of the front-back support member 44, and a left-right joint tube member joined to the rear portion of the left-hand coupling tube member 46a and the rear portion of the right-hand coupling tube member 46b. 47.

  The cutting portion frame structure for supporting the root cutting portion 13 includes a left and right support shaft 49 rotatably inserted into a bearing tube 48 fixed to the left and right connecting tube member 47, and the left end of the support shaft 49. It consists of a front-rear facing pipe member 50 that is extended leftward and next forward and a front-rear vertical plate 51 fixed to the front-rear direction pipe member 50. At this time, the front-rear facing portion of the front-rear facing pipe member 50 and the front-rear facing vertical plate 51 are located directly below or to the left of the left front-rear facing support member 44 and the left front-rear front-facing coupling pipe member 46a. Thus, a wide space for forming the root cutting device 40 is secured between the left and right front-rear connecting pipe members 46a and 46b. This wide space also contributes to promoting the fall of the cut pieces of the root vegetable crop 3.

  The root cutting device 40 is supported by the frame structure of the cutting portion and is freely movable up and down around the left and right support shaft 49. The drive case 52 fixed to the front portion of the longitudinal plate 51 and the drive case 52 A pair of left and right vertical drive shafts 53 and 53 shown in FIG. 10 erected from the left and right portions of the upper surface, and a pair of disk blades which are fixed to the upper ends of the vertical drive shafts 53 and 53 and intersect and rotate in a substantially horizontal plane. 54, 54.

  The second nipping / conveying device 41 is mainly composed of a pair of belts 55 that exist in front of the root cutting device 40 and whose opposite surfaces rotate backward in a substantially horizontal plane. The inclination of the conveying direction of the conveying device 41 is made smaller than that of the holding and conveying device 9, and the holding force of the second holding and conveying device 41 is made smaller than that of the holding and conveying device 9. Therefore, in the process in which the second sandwiching and transporting device 41 sandwiches the leaf stem portion 3a by the pair of belts 55 and moves it backward, the sandwiching and transporting device 9 pulls up the leaf stem portion 3a and puts the shoulder portion of the root vegetable portion 3b into the pair of belts. The bottom edge of 55 is brought into contact with the upper and lower positions, and in this positioned state, it is guided to the center position of the pair of disk blades 54 of the root cutting device 40. At this time, the pair of belts 55 of the second holding and conveying device 41 holds the leaf stem portion 3a immediately above the root vegetable portion 3b from which the root 3c is cut, and ensures the cutting of the root 3c.

  Further, the extension plate 57 extended forward from the drive case 52 of the root cutting device 40 is hooked on the vertical support plate 43, and a spring 66a for pulling up the frame structure of the cutting portion upward around the left and right support shaft 49, and the root cutting device. Displacement restricting means 56 for restricting the upward displacement of 40 at a specific height position is provided.

  The specific height position is appropriately determined depending on the vertical dimension of the root vegetable portion 3b of the root vegetable crop 3 to be harvested. In the optimum state, the pair of disc blades 54 and 54 are transferred by the second sandwiching and conveying device 41. It is set to be slightly lower than the bottom surface portion of the root vegetable portion 3b of the root vegetable crop 3 to be applied. The root 3c is cut under the state set in this way, and thus the root 3c remaining on the root vegetable portion 3b side after being cut by the pair of disc blades 54 and 54 for the excessively small root vegetable portion 3b is On the contrary, for the excessively long root vegetable part 3b, the root vegetable part 3b whose shoulder is supported by the belt 55 is provided through a guide means (not shown) provided on the root cutting device 40 side. Since the root cutting device 40 is pushed down against the elasticity of the spring in accordance with the invention, the root remaining on the root vegetable portion 3b side after being cut by the pair of disk blades 54, 54 has a predetermined length.

  Further, as shown in FIG. 10, a large number of front blades inclined rearward and downward in a height range between the disk blades 54 and 54 and the drive case 52 on the rear side of the pair of disk blades 54 and 54. A rake 71 formed by connecting a vertically oriented bar member 71 a directed upward by a horizontally oriented bar member 71 b is provided in the same shape as the root cutting device 40.

  The pair of disk blades 54, 54 are rotated so that the crossing point moves backward, and the crossing point acts so that the crossing point kicks backward when the root 3c is cut at this crossing point. Of the cut pieces kicked back in this way, the relatively large piece is received by the rake 71 and falls downward by the gravitational action, and the relatively small piece passes between the rod members 71a of the rake 71 and moves further backward. Falling while facing.

  As shown in FIG. 9, the leaf stem cutting unit 14 includes a leaf stem cutting device 42, a leaf discharge feeding device 72, and an additional leaf stem cutting device 42A. The leaf stem cutting device 42 is mainly composed of two disk blades 82 that are located behind the root cutting device 40 and rotate in a substantially horizontal plane. The root cutting device 40 cuts the root 3c. The leaf stem portion 3a of the root vegetable portion 3b is cut into a predetermined length. The root vegetable part 3b in the state where the leaf stem part 3a is cut out by the leaf stem cutting device 42 is the harvest target object, and this harvest target object falls on the upper surface of the rake 71 and is subsequently guided to the upper surface of the rake 71 and rearward and downward It slides down and falls freely on the conveyor belt of the sorting conveyor 75 shown in FIG.

  The leaf discharge device 72 is provided in a left-right arrangement state above the leaf stem cutting device 42, and includes a lower conveyance unit including a pair of endless belts 73a whose opposing surfaces rotate backward in a substantially horizontal plane, and a clamping chain 73b and an upper conveying portion mainly composed of a plate member arranged so as to be pressed against this, and is transferred from the leaf stem cutting device 42 to the rear thereof while sandwiching the relatively upper portion of the leaf stem portion 3a. To do. The leaf stem portion thus transferred is discharged to the field through the leaf discharging chute 74. Further, the additional leaf stem cutting device 42A pulls in the leaf stem portion 3a conveyed by the leaf discharging device 72 and separates the relatively upper portion thereof.

The power transmission configuration to the above-described leaf stem cutting unit 14 and root cutting unit 13 will be described with reference to FIG. 9 and FIGS.
The power of the fulcrum shaft 16 is transmitted to the input sprocket 77 of the leaf stem cutting device 42 via the chain / sprocket transmission mechanism, and then the root cutting device 40 is connected to the input sprocket 77 concentrically from the sprocket 78 via the chain. To the input sprocket 79 and to the input sprocket 80 of the leaf discharging device 72 and the input sprocket 81 of the holding and conveying device 9 via another chain.

  The power transmitted to the input sprocket 77 rotates the pair of disc blades 82 of the leaf stem cutting device 42, and the power transmitted to the input sprocket 79 is a pair of disc blades 54 of the root cutting device 40. The power transmitted to the input sprocket 80 operates the belt 73a and the chain 73b of the leaf discharging device 72, and the left and right of the second sandwiching and conveying device 41 via a pair of left and right endless transmission belts 83. The pair of endless belts 55 are actuated, and further, the power transmitted to the input sprocket 81 actuates the nipping and conveying device 9.

  In the above-described leaf stem cutting portion 14, as shown in FIGS. 13 and 14, the left and right drive pulleys 101 a and 101 b that are wound around the last portion of the belt 73 a and the last portion of the transmission belt 83 are wound around. The left and right drive pulleys 102a and 102b are fixed to and driven by the same vertical drive shafts 103a and 103b on the left and right sides, but these drive pulleys 101a and 101b and the vertical drive shafts 102a and 102b In this case, the leaf stem portion 3a conveyed rearward by the leaf discharging device 72 may be entangled and caught, and in order to prevent such a phenomenon, the drive pulleys 101a and 101b and the drive pulleys 102a and 102b Between the outer circumferences of these pulleys, leaf-stem guide rods 104 and 105 in a plan view arcuately arranged vertically on each of the left and right sides. Further, as shown in FIG. 14B, leaf-stem guide rods 106 and 107 having a circular arc shape in plan view are also provided on the left and right sides below the left and right drive pulleys 102a and 102b so as to follow the outer periphery of each pulley. It is provided one by one. These leaf stem guide rods 104, 105, 106, and 107 also contribute to restricting the belts 73a and 83 from being removed from the grooves of the corresponding drive pulleys.

Next, the structure of the rear part and the right part of the base 2a that forms the lower part of the machine body 2 will be described with reference to FIGS.
On the upper surface of the rear part of the base 2a, the sorting conveyor 75 is arranged in a relatively low direction with the conveying direction being linear in the left-right direction. The sorting conveyor 75 is supported at a position on the left side of the base 2a so as to be able to rotate only through a bearing portion 108 so as to be able to rotate, and to swing up and down around the horizontal driving shaft 109. A frame frame 110 having a rectangular shape in plan view that is long in the left-right direction, and a left-right rotation that is supported by a front portion of the frame frame 110 so as to be rotatable and displaceable to the right through a bearing and pressed right by a spring force. A shaft 111 is provided, and an endless conveying belt 112 is wound around a drum 109a fixed to the front-rear horizontal drive shaft 109 and a drum 111a fixed to the left-right rotation shaft 111. .

  At this time, protruding members extending in the width direction are arranged on the outer peripheral surface of the conveying belt 112 at intervals of about several tens of centimeters in the conveying direction, and each protruding member is a root vegetable portion 3b supported on the outer peripheral surface. Is prevented from rolling in the transport direction.

  The front portion of the frame frame 110 is fixedly supported on the base 2a via the height changing means 113, and the height changing means 113 may be arbitrarily formed, but in this example, the frame frame 110 110 includes a leg member 113a extending downward from 110, and an upright support piece 113b fixed to the base 2a. A plurality of bolt holes are arranged in the upright direction in the upright support piece 113b. The leg member 113a is fastened to the standing support piece 113b in a fastening manner with a bolt and nut through any one of the above and a bolt hole formed in the leg member 113a.

  Power is transmitted from the fulcrum shaft 16 through a pulley / belt mechanism 114 and a bevel gear 115 to the front / rear horizontal drive shaft 109. At this time, the pulley / belt mechanism 114 has a clutch mechanism formed by a tension pulley 116. The on / off operation of the clutch mechanism is performed by swinging the operation lever 117 provided on the rear rear surface of the frame frame 110 to the left and right.

As shown in FIGS. 2 and 4, a side container stand 118 that is long in the front-rear direction is provided at the right end edge of the base stand 2a so as to be substantially the same height as the base stand 2a. It is fixed in a posture, and is swung around the left edge when traveling on the road to be fixed in a standing storage posture.
When collecting the adjusted root vegetable portion 3b in the container 119, the empty container 119 is placed at a position below the right end portion, which is the transfer end of the sorting conveyor 75, on the side container stand 118 in the horizontal posture. Then, the operation lever 117 is inserted and operated, whereby the leaf stem portion 3 a is cut by the leaf stem cutting device 42, guided to the upper surface of the rake 71, and dropped one after another. The belt 112 is supported at the left end portion of the upper surface of the belt 112, and then is conveyed to the right with a gentle upward slope by the movement of the conveyance belt 112. When the conveyance belt 112 reaches the conveyance end, it is freely moved into the container 119. Fall. When the root vegetable part 3b is filled in the container 119, it is slid forward on the side container stand 118 so that another container 119 is positioned in the same manner as before.

  In this way, when collecting the root vegetables 3b into the container 119, there are times when it is desired to change the container 119 to a tall one. In this case, the leg member 113a and the upright support member of the height changing means 113 are used. The fastening position by the bolt with 113b is changed to increase the upward inclination angle in the conveying direction of the sorting conveyor 75. On the contrary, there is a case where it is desired to change the container 119 to a short one, but in this case, it is not always necessary to reduce the upward inclination angle in the conveying direction of the sorting conveyor 75, but a drop mark is added to the root vegetable portion 3b. In order not to cause this, preferably, the fastening position by the bolt is changed in accordance with the previous treatment to reduce the upward inclination angle in the conveying direction of the sorting conveyor 75.

  A rear container table 120 is provided in a rearward projecting manner on the rear side of the rear edge of the base table 2a. The rear container stand 120 includes a front standing member 121 and a horizontal frame portion 122 projecting rearward from the lower end of the front standing member 121, and the upper end portion of the front standing member 121 is interposed via a support piece fixed to the base 2a. It is installed so as to be able to swing around the left and right support shaft 123. At this time, the horizontal frame portion 122 has a size that can support a relatively long container 124 and a rectangular tube member 122 a that is positioned so as to surround the lower portion around the four circumferences of the container 124.

A positioning hook mechanism 126 for positioning the rear container table 120 is formed between the upright member 125 fixed to the base table 2a and the rear container table 120. The positioning hook mechanism 126 is fixed to the side surface of the front standing member 121 of the rear container base 120 and the hook member 128 that is swingably mounted on the standing member 125 via the left-right axis 127 and guides the hook member 128. The projection member 129 is inserted and guided through the through hole 128a. At this time, the guide through hole 128a has a relatively long arc-shaped portion and an intermediate locking portion a1 formed in the middle of the length of the arc-shaped portion.
Such a positioning hook mechanism 121 is preferably provided on each of the left and right sides of the rear container base 120, but may be provided only on one side.

  The rear container table 120 is positioned by a positioning hook mechanism 126 at a harvesting operation position p1 at which the horizontal frame portion 122 assumes a substantially horizontal posture as indicated by a solid line in FIG. 16, and at the horizontal frame portion 122 as indicated by an imaginary line k1. For example, the horizontal frame portion 122 has an inclination angle in the front-rear direction as indicated by an imaginary line k2, for example, at the position p2 at which the field movement position p2 is 20 degrees. It is allowed to move to the storage position p3 having a size exceeding 45 degrees.

  In order to allow the rear container base 120 to move upward around the left-right axis 123 and to be locked at the harvesting position p1, the projecting member 129 is placed at the bottom of the arcuate portion of the guide through-hole 128a. In this case, it is not always necessary that the projecting member 129 abuts on the lowest part of the arcuate portion. In this state, the rear container stand 120 is in a state in which the front upright member 121 is in contact with a stopper (not shown) provided on the base stand 2a side. To adjust the level of the horizontal frame 122 at this time This is done by adjusting the amount of protrusion of the stopper to the rear.

  The horizontal frame portion 122 of the rear container stand 120 at the harvesting operation position p1 can be grounded when the machine body 2 is largely tilted back and forth when moving in a field or the like, and such a grounding phenomenon has occurred. At this time, the rear container stand 120 is swung so as to easily escape upward by a pushing force applied from the ground, and when the ground contact state is released, the original harvesting operation position p1 without requiring manual operation due to gravity action. It is returned to.

  Further, to allow the rear container stand 120 to move upward around the left-right axis 123 and to be locked at the position p2 during the field movement, the rear container stand 120 is manually rotated around the left-right axis 123. For example, the projecting member 129 is moved downwardly by being guided by the arcuate portion of the guide through hole 128a so as to move to the gravitational force acting on the hook member 128. Thus, the intermediate container a1 is entered and locked without requiring manual work, and the rear container stand 120 is locked at the farm field movement position p2. When the machine body 2 moves on the farm field or the like under this locked state, it cannot be said that the horizontal frame portion 122 of the rear container stand 120 does not come into contact with the ground, and when such a grounding phenomenon occurs, the hook member Since 128 allows the projecting member 129 to move away from the intermediate locking portion a1, the rear container base 120 swings so as to escape upward with a pushing force applied from the ground, and the grounding state is released. When it is done, it returns to the original position p1 at the time of field movement without the need for manpower due to the gravitational action.

  In order to bring the rear container base 120 into the locked state at the storage position p3, the rear container base 120 is largely swung upward around the left-right axis 123 by manual operation, and is appropriately fixed (not shown). Fix by means (such as a hook).

  On the other hand, when the rear container base 120 fixed at the storage position p3 is released and then swung downward about the left-right axis 123, the positioning hook mechanism 126 will move to the rear unless the artificial force is applied to the hook member 128. It will be in the state which latches the side container stand 120 to the position p2 at the time of agricultural field movement. In order to shift the rear container stand 120 from the storage position p3 or the farm field movement position p2 to the harvesting operation position p1, artificial force is applied to the hook member 128 so that the projecting member 129 does not enter the intermediate locking portion a1. In this state, the projecting member 129 is moved to the lowermost part of the arcuate portion of the guide through hole 128a.

  When selecting defective products from the root vegetable part 3b group conveyed on the upper surface of the conveyor belt 112 of the sorting conveyor 75, it is relatively long and shallow used on the horizontal frame part 122 of the rear container stand 120, for example, for a long wall. The container 124 is placed, and an auxiliary worker selects a defective product from the root vegetable part 3b group that is transported toward the transport end on the upper surface of the transport belt 112 while walking on the rear side of the rear container stand 120. This is put into the container 124 on the rear container stand 120.

Next, the mounting structure of the leaflet chute 74 and the support structure thereof will be described.
The leaflet chute 74 includes a bottom surface portion 74a and side portions positioned on the left and right sides of the bottom surface portion 74a. The leaf chute 74 is mounted on the rear portion of the bearing tube 48 of the leaf stem cutting portion 14 so as to be swingable up and down around the left and right axis 130 via a hinge. It is installed. At this time, the leaflet chute 74 is bent in a letter shape so that the rear part is not slightly deviated toward the center of the machine body in plan view, and the front end extends to the rear side of the rear container stand 120.

  On the other hand, a standing member 131 is fixed to the rear end edge of the horizontal frame portion 122 of the rear container table 120, and a support guide portion 132 that supports the bottom surface portion 74 a of the leaf chute 74 on the upper end portion of the standing member 131. Is formed. The support guide portion 132 is preferably a support roller that is rotatable about a left-right axis 130. At this time, the height of the support roller 132 is determined so that the inclination angle θ in the front-rear direction of the bottom surface portion 74a of the leaf chute 74 is approximately 45 degrees or more (optimally 49 degrees).

  The leaf stem portion 3a separated from the root crop 3 by the leaf stem cutting device 42 is fed rearward by the leaf discharge device 72 and is displaced by the leaf removal device 72A, and is the leading end of the leaf discharge chute 74 in a state of being cut by the additional leaf stem cutting device 42A. It falls to the front upper part of the bottom surface, and then slides backward on the bottom surface portion 74a while being guided by the leaflet chute 74, and falls to the field.

  When the root vegetable crop 3 is harvested, the holding and conveying device 9 needs to grasp the optimum height position of the leaf stem portion 3a of the root vegetable crop 3, so that the vertical position of the gauge foil 11 is changed and adjusted according to the height of the pod. Is done. In this case, the side processing unit 12 is swung around the fulcrum shaft 16 with respect to the base 2a, and the position of the front edge of the bottom surface portion 74a of the leaf chute 74 is virtually shown in FIG. It changes variously as shown by lines k3 and k4. On the other hand, since the height of the left-right support roller 132 that supports the bottom surface portion 74a does not change, the inclination angle of the leaf chute 74 in the front-rear direction changes to a large or small value. However, in this example, the inclination angle during the normal harvesting operation is made not to be smaller than 45 degrees (preferably 49 degrees). Falls smoothly on the bottom surface 74a without stagnation.

It is a side view of a root crop harvester showing an example of the present invention. It is a top view of the root crop harvesting machine. It is a front view of the root crop harvesting machine. It is a rear view of the root vegetable harvesting machine. It is a top view which shows the rear part of the clamping conveyance apparatus of the said root vegetable harvesting machine. It is a side view which shows the mud removing apparatus etc. of the said root vegetable harvesting machine. It is a top view which shows a part of said mud dropping apparatus. It is explanatory drawing which shows the star foil etc. of the said mud dropping apparatus. It is a side view which shows the rear part of the side part processing unit of the said root crop harvesting machine. The rear part of the said clamping conveyance apparatus and the frame structure of the back are shown, A is a top view, B is a side view. It is a top view which shows arrangement | positioning, such as a belt and a pulley of the rear part of the said side part processing unit. It is a top view which shows arrangement | positioning of a chain other than the belt and pulley of the rear part of the said side part processing unit. It is rear surface sectional drawing which shows the pulley etc. on which the rear part of the said side part processing unit and the last part of the chain were wound. The pulley etc. which wound the last part of the belt of the rear part of the said side processing unit are shown, A is a top view and B is a side view. It is a side view which shows the rear part of the said root vegetable harvesting machine. It is side view explanatory drawing which expanded a part of FIG.

Explanation of symbols

2 Airframe 2a Foundation stand 3 Root crop 3a Leaf stem 3b Root crop 12 Side treatment unit 16 First horizontal axis (fulcrum axis)
74 Leaflet chute 74a Bottom portion 75 Sorting conveyor 109 Horizontal axis (horizontal drive axis facing forward and backward)
119 Container 120 Rear container support base 123 Third horizontal axis 126 Positioning hook mechanism 130 Second horizontal axis 132 Support guide (support roller)
p1 Harvesting position p2 Field moving position (specific position)

Claims (4)

  After extracting the root vegetable crop from the field and transporting it to the machine body, cutting the leaf stem part, supplying the root vegetable part to the transport start end of the sorting conveyor, and further the root vegetable part supplied to the sorting conveyor to the transport end In a root crop harvester that operates to drop into a container after being transported in a straight line along a specific direction, the transport end of the sorting conveyor is repositioned around a horizontal axis perpendicular to the specific direction in the vicinity of the transport start end A root crop harvester characterized by being made possible.   A root crop harvesting machine provided with a side processing unit that is capable of swinging up and down around the first left-right axis after feeding the root vegetable crop from the field onto the machine body, cutting off the leaf stem and supplying it to the transport start of the sorting conveyor A leaf chute for discharging a leaf stem portion cut out from the root vegetable crop to the field is extended from the rear portion of the side processing unit through a second left and right axis so as to be swingable up and down. Then, a support for supporting the lower surface of the leaf chute on the rear container support base and extending the rear container support base from the rear end portion of the base base so as to be able to swing up and down via a third horizontal axis. The root vegetable harvesting machine according to claim 1, further comprising a guide portion.   The structure in which the inclination angle in the front-rear direction of the leaf chute is maintained at 45 degrees or more during the harvesting operation with the bottom surface of the leaf chute supported by the support guide. 2. Root crop harvesting machine according to 2.   A positioning hook mechanism is formed between the base platform and the rear container platform, and by swinging the rear container platform upward from the harvesting operation position around the third left-right axis, Even if no manual operation force is applied to the positioning hook mechanism, the rear container base is locked in a state in which it does not swing downward from a specific position above and is allowed to swing upward from the specific position. And the rear container table locked at the specific position is swung to the harvesting operation position by applying a manual operation force to the positioning hook mechanism. The root vegetable harvester according to claim 2 or 3.

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