JP2018000025A - Crop pull-out machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crop pull-out machine capable of performing pull-up work stably.SOLUTION: A crop pull-out machine comprises: a pull-up mechanism 100 pulling up a foliage part W1 of a Japanese radish W in a field; a pull-out conveyance device 200 holding the foliage part pulled up by the pull-up mechanism to be conveyed to a rear oblique upper part, thereby pulling out the Japanese radish from a field; and a pull-up mechanism position adjustment device 160 adjusting a vertical position of the pull-up mechanism. The pull-up mechanism position adjustment device 160 includes: a right/left pair of parallel link arms 161R and 161L including one edges 161Ra and 161La connected to the pull-up mechanism 100 and the other edges 161Rb and 161Lb connected rotatably to a body side; and a rotation operation part 170 rotating the pull-up mechanism 100 vertically through the right/left pair of parallel link arms with rotation fulcrums 162R and 162L on the body side as the center.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a crop drawing machine that performs a drawing operation of crops such as root vegetables.

  2. Description of the Related Art Conventionally, a root vegetable harvesting machine that extracts root vegetables such as radishes from a field is known (see, for example, Patent Document 1).

  The root vegetable harvesting machine described in the prior patent document 1 raises the stems and leaves of crops (root vegetables) exposed in the field, raises them with the device, collects them at the center of the body, and holds the leaves and leaves with the pulling and conveying device. It is pulled out from the plant, and the foliage part is cut at a predetermined height by a foliage cutting device during transportation to return the crop to the field.

  The left side of this pulling device is fixed to the tip of one rotating arm that is pivotally attached to the left body frame, and is raised according to the type of crop and the growth of the foliage. It is the structure which can change the up-and-down position of an apparatus.

Japanese Patent Laying-Open No. 2015-62371

  However, since the above-described conventional root vegetable harvesting machine pulling device is connected to the machine frame by a single rotating arm on the left side surface, if it vibrates greatly during crop drawing work, the raising and lowering position of the pulling device Is not stable, and cannot be reliably guided to the drawing / conveying device without losing the foliage, and crop removal may fail.

  An object of this invention is to provide the crop extractor which can perform the raising operation | work more stably in view of such a conventional subject.

In order to achieve the above object, the first present invention provides:
A raising mechanism (100) for causing a leaf (W1) of a crop (W) in a field;
A pulling and conveying apparatus (200) for pulling out the crop (W) from the field by holding the leaf portion caused by the pulling mechanism (100) and conveying the leaf diagonally upward;
A raising mechanism position adjusting device (160) for adjusting the vertical position of the raising mechanism (100),
The raising mechanism position adjusting device (160) includes:
A pair of left and right connecting arms (161L, 161R) each having one end (161La, 161Ra) connected to the pulling mechanism (100) and the other end (161Lb, 161Rb) rotatably connected to the main body side. When,
A rotation operation unit (170) for rotating the pulling mechanism (100) in the vertical direction about the rotation fulcrum (162L, 162R) on the main body side via the pair of left and right connecting arms (161L, 161R). ) And a crop pulling machine characterized by that.

The second aspect of the present invention
The raising mechanism (100)
A pair of left and right first pulling devices (110L, 110R) for causing the leaves (W1) of the crop;
A pair of left and right second pulling devices (130L, 130R) that are arranged on the rear side of the pair of left and right first pulling devices (110L, 110R) and cause the leaf portion (W1) of the crop,
The one ends (161La, 161Ra) of the pair of left and right connecting arms (161L, 161R) are connected to the back surfaces of the pair of left and right second pulling devices (130L, 130R), respectively. The crop drawing machine according to the first aspect of the present invention.

The third aspect of the present invention provides
The pulling and conveying apparatus (200)
A pair of left and right pulling and conveying belt units (210L, 220L, 230L, 210R, 220R, 230R) for holding and conveying the leaf portion;
A pair of left and right belt unit support frames (270L, 270R) that rotatably support the pair of left and right pull-out conveyance belt units (210L, 220L, 230L, 210R, 220R, 230R);
The other ends (161Lb, 161Rb) of the pair of left and right connecting arms (161L, 161R) are connected to the upper surfaces of the pair of left and right belt unit support frames (270L, 270R), respectively. It is attached to the attachment members (203L, 203R) so as to be rotatable,
The rotation operation unit (170) is connected to one of the connection arms (161L, 161R) of the pair of left and right connection arms (161L, 161R), and the crop drawing machine according to the second aspect of the present invention. It is.

The fourth invention relates to
The pair of left and right first pulling devices (110L, 110R)
A pair of endless left and right pairs in which a plurality of first protrusions (112a) projecting from the outer peripheral surface are formed, and one end surface of both end surfaces connecting the outer peripheral surface and the inner peripheral surface is arranged to face each other. A first raising belt (112, 112) of
A pair of left and right first pulling pulley units (111a, 111b, 111a, 111b) around which the pair of left and right first pulling belts (112, 112) are respectively looped,
The left and right pair of second raising devices (130L, 130R)
A pair of endless left and right second pull-up belts (132, 132) in which a plurality of second protrusions (132a) protruding from the outer peripheral surface are formed, and the outer peripheral surfaces are arranged to face each other;
A pair of left and right second pulling pulley units (131a, 131b, 131a, 131b) around which the pair of left and right second pulling belts (132, 132) are respectively looped;
The pair of left and right first pull-up belts (112, 112) have a pair of left and right pulley rotation shafts (153, 112) of the pair of left and right second pull-up pulley units (131a, 131b, 131a, 131b) in plan view. 155) within the range between the axes,
The length of the first protrusion (112a) of the first pull-up belt (112, 112) is shorter than the length of the second protrusion (132a) of the second pull-up belt (132, 132). The crop drawing machine according to the second or third aspect of the present invention, characterized in that

The fifth aspect of the present invention relates to
The pitch (P ₁ ) of the plurality of first protrusions (112a), the peripheral speed (V1) of the first pull-up belt (112, 112), and the traveling speed (Vs) during the crop pulling work travel are: The first protrusion (112a) is adjusted so as to come into contact with the leaves of the crop (W) planted between predetermined strains at least once while traveling between the strains. A crop pulling machine according to the fourth aspect of the present invention, characterized in that

The sixth invention relates to
The value of the conveying speed component in the direction parallel to the field surface when the pulling and conveying apparatus (200) conveys the leaf portion obliquely upward is larger than the value of the traveling speed during the crop extraction work traveling. The crop drawing machine according to any one of the first to fifth aspects of the present invention.

The seventh invention relates to
A pulling height adjusting mechanism (2,) for adjusting the height of the front end portion of the pulling and conveying apparatus (200) from the surface of the field, which starts to hold the raised leaf portion by the pulling mechanism (100). 2a, 10)
The pulling height adjusting mechanism (2, 2a, 10)
A grounding wheel (2) that is rotatably arranged on either the left or right side;
A support stay (2a) for rotatably supporting the ground ring (2);
A height adjusting device (10) for adjusting the height of the support stay (2a),
The internal pressure of the grounding ring (2) is the whole or part of the force in the direction opposite to the pulling direction that the pulling / conveying device (200) receives from the crop when the crop is pulled out by the pulling / conveying device (200). The crop drawing machine according to any one of the first to sixth aspects of the present invention, wherein the grounding wheel (2) is adjusted to be absorbable by deformation.

The eighth invention relates to
An internal pressure detection sensor for detecting the internal pressure of the ground ring,
Control that outputs a control command for increasing the height of the support stay (2a) to the height adjusting device (10) when it is determined that the internal pressure detected by the internal pressure detection sensor is equal to or greater than a predetermined value. A crop drawing machine according to the seventh aspect of the present invention.

  According to the first aspect of the present invention, since the raising mechanism (100) is rotatably connected to the main body side by the pair of left and right connecting arms (161L, 161R), the raising work can be performed more stably. I can do it.

  Moreover, it can guide reliably to the drawing conveyance apparatus side without losing a leaf part by this, and it can prevent that the extraction of a crop fails.

  According to the second invention, in addition to the effects of the first invention, the first raising device (110L, 110R) and the second raising device (130L, 130R) disposed on the rear side thereof are provided. ) Are provided in a pair on the left and right sides, so that the leaf can be raised more reliably.

  Further, one end (161La, 161Ra) of each of the pair of left and right connecting arms (161L, 161R) is connected to the back surface of each of the pair of left and right second pulling devices (130L, 130R). Since the length of the pair of left and right connecting arms (161L, 161R) can be shortened compared to the conventional one, the vertical vibration of the raising mechanism (100) can be suppressed.

  According to the third aspect of the present invention, in addition to the effects of the second aspect of the present invention, the other ends (161Lb, 161Rb) of the pair of left and right connecting arms (161L, 161R) The pair of left and right connecting arms (161L, 161R) are pivotally attached to a pair of left and right connecting arm mounting members (203L, 203R) fixed to the upper surfaces of the support frames (270L, 270R). Since the length can be shortened compared with the conventional one, the vertical vibration of the pulling mechanism (100) can be suppressed.

  Moreover, since the rotation operation part (170) is connected with one connection arm (161L, 161R) among a pair of left and right connection arms (161L, 161R), the rotation operation part (170) is conveyed by the pulling and conveying apparatus (200). There is no hindrance to the rearward movement of the leaves.

  According to the fourth aspect of the present invention, in addition to the effects of the second or third aspect of the present invention, the length of the first protrusion (112a) of the first pull-up belt (112) is the second pulling length. Since it is shorter than the length of the second protrusion (132a) of the raising belt (132, 132), the pair of left and right first raising devices (110L, 110R) are changed to the pair of left and right second raising devices (130L, 130R). Since they can be arranged close to each other without interference, the front and rear width of the crop extractor can be made compact.

  In addition, since the length of the second protrusion (132a) of the second pull-up belt (132, 132) is increased, the second pull-up device (130L, 130R) becomes the first pull-up device (130L, 130R). 110L, 110R) can be prevented from failing to take over the leaf portion, so that the crop can be pulled out more reliably.

  According to the fifth aspect of the present invention, in addition to the effects of the fourth aspect of the present invention, the first protrusion (112a) of the first pull-up belt (112) contacts the leaf part of the crop once. Since it does not travel between the strains without doing, it is prevented from traveling between the strains without causing the leaf portion from the field, and the leaf portion of the crop can be caused more reliably.

  According to the sixth aspect of the present invention, in addition to the effect of any one of the first to fifth aspects of the present invention, the pulling and conveying apparatus (200) can be prevented from pushing down the crop.

  Further, according to the seventh aspect of the present invention, in addition to the effect of any one of the first to sixth aspects of the present invention, for example, the air pressure sealed in the tire of the ground wheel (2) is more than the limit. By making the number small, all or part of the downward reaction force generated when the pulling and conveying device (200) pulls out the crop is absorbed by the deformation of the tire of the ground wheel (2). ) Due to a large downward load against the grounding wheel (2), the pulling work height is prevented from changing greatly in the vertical direction.

  According to the eighth aspect of the present invention, in addition to the effects of the seventh aspect of the present invention, the extraction operation is continued while the extraction conveyance device (200) is moved downward by the reaction force when extracting the crop. Can prevent the crops from being pulled out.

The left view which shows the whole radish drawing machine in embodiment of this invention 1 is a plan view of the radish drawing machine shown in FIG. Plan view of radish drawing machine shown in Fig. 1 (Part 2) Front view of radish drawing machine shown in FIG. Schematic side view of the front side of the machine body for explaining the raising mechanism position adjusting device in the radish drawing machine of the present embodiment The schematic side view which shows the state which the raising mechanism in the radish drawing machine of this Embodiment raised Schematic plan view of the main part of the pulling and conveying apparatus in the present embodiment (A): It is the schematic for demonstrating the two-stage type roller member of the four clamping rollers which comprise the left-right paired clamping roller group in this Embodiment, and is EE cross-sectional arrow view in FIG. FIG. 7B is a schematic diagram for explaining a one-stage roller member of four nipping rollers constituting the pair of right and left nipping rollers, and is a sectional view taken along line FF in FIG. Schematic plan view of the main part of the shoulder aligner in the present embodiment (A): Partial schematic left side view of airframe for explaining the soira provided in the radish drawing machine of the present embodiment, (b): MM cross-sectional arrow view of the soira shown in FIG. 10 (a) FIG. 10C is a cross-sectional view taken along the same cross section as FIG. 10B of another example of the solitary blade having a different direction of the inclined surface from that shown in FIG. Expansion of the main part of the radish puller to show the relationship between the position in the height direction of the bottom edge of the pair of left and right conveyor belt cover overhangs and the position in the height direction of the lower surfaces of the pair of left and right shoulder alignment belts Side view FIG. 12 is a side view for explaining an example different from the example shown in FIG. 11, and is an enlarged side view of a main part of a radish drawing machine showing a pair of left and right conveying belt cover overhang portions having protrusions.

  Below, the radish drawing machine as an example of the crop drawing machine of this invention is demonstrated, referring drawings.

  FIG. 1 is a left side view of the radish drawing machine 1 of the present embodiment, and FIG. 2 is a plan view (part 1) of the radish drawing machine 1 shown in FIG.

  3 is a plan view (part 2) of the radish drawing machine 1 shown in FIG. 1, and FIG. 4 is a front view of the radish drawing machine 1 shown in FIG.

  2 shows the internal structure of the pulling and conveying apparatus 200 and the shoulder aligning apparatus 300, which will be described later, and FIG. 3 shows a state where the drawing and conveying apparatus 200 is covered with a pair of left and right pulling and conveying apparatus covers 202L and 202R.

  In FIG. 4, the drawing / conveying device 200 and the engine 4 are not shown.

  As shown in FIGS. 1 to 4, the radish drawing machine 1 of the present embodiment includes a gauge wheel 2 disposed on the right front side of the machine body, a pair of left and right rear wheels 3L and 3R as drive wheels, An engine 4 as a power source and a steering handle 5 for steering the aircraft are provided.

  An upper end portion of a support stay 2 a that supports the gauge wheel 2 so as to be rotatable is connected to the support stay moving mechanism 10. The support stay moving mechanism 10 is connected to the support stay 2a at one end, and the other end is connected to the front end of a rotating handle 10a for rotating the support stay moving mechanism 10 via a bevel gear. Is slidable up and down. The outer wall portion of the support stay moving mechanism 10 is fixed to the body side.

  The adjusting rod includes a first rod on one end connected to the support stay 2a and a second rod on the other end connected to the rotating handle 10a via a bevel gear. The first rod has a cylindrical shape, and has a hole portion in which an internal thread is formed on the inner peripheral wall surface, and the second rod is inserted into the hole portion of the first rod. A male screw that fits the female screw is formed.

  When the second rod rotates via the bevel gear by rotating the rotation handle 10a, the first rod moves upward or downward depending on the rotation direction of the rotation handle 10a.

  As a result, the support stay 2a connected to the lower end of the first rod moves in the vertical direction (see arrow T in FIG. 1), and the gauge wheel 2 moves in the vertical direction.

  In addition, the gauge wheel 2 is configured to travel in the groove portion of the straw in the field. The tire air pressure of the gauge wheel 2 will be described later.

  Thereby, the vehicle height of the front side of the radish drawing machine 1 can be freely changed, and the height (drawing work height) of the front end portion of the drawing conveying device 200 from the ridge surface Y1 of the field Y can be adjusted. I can do it.

  The gauge wheel 2 of the present embodiment is an example of the grounding wheel of the present invention, and the support stay 2a of the present embodiment is an example of the support stay of the present invention. The support stay moving mechanism 10 of the present embodiment is an example of the height adjusting device of the present invention.

  The driving force from the engine 4 is transmitted to the chains (not shown) in the pair of left and right chain cases 7L and 7R via the transmission case 6 and the output shaft 6a protruding in the left and right direction of the transmission case 6, and The rear wheels 3L and 3R are driven.

  Further, the pair of left and right chain cases 7L and 7R is formed in the direction indicated by the arrow U (FIG. 1) with the output shaft 6a protruding in the left and right direction as the rotation center when the operator rotates the chain case rotation handles 11L and 11R. (See FIG. 4), each of them can be individually rotated.

  Thereby, the vehicle height of the rear-wheel side of the radish drawing machine 1 can be adjusted independently on either side.

  The position of the left chain case 7L can be changed in the left-right direction. Further, the positions of the pair of left and right rear wheels 3L and 3R can be attached to either the left or right side of the pair of left and right chain cases 7L and 7R.

  Accordingly, by making it possible to change the wheel interval, for example, radish can be pulled out even in the case of cocoons having different numbers of planting strips, such as two-row planting or three-row planting.

  Moreover, as shown in FIGS. 1-4, the radish drawing machine 1 of this Embodiment is (1) The raising mechanism 100 which raises the foliage W1 of the radish W which spread to the field Y, (2) It raises A pulling / conveying device 200 that pulls the radish W from the field Y substantially vertically by transporting the radish W obliquely upward and rearward substantially in synchronization with the traveling speed of the aircraft while sandwiching the foliage W1 of the radish W caused by the mechanism 100. And (3) a side surface of the shoulder W2a at the upper end of the main body W2 of the radish W by taking over the stalks and leaves W1 of the radish W that are horizontally disposed below the pulling and conveying apparatus 200 and are conveyed by the pulling and conveying apparatus 200. A shoulder aligning device 300 that aligns the position in the vertical direction as viewed, and conveys backward in synchronism with the traveling speed of the aircraft while sandwiching the lower portion of the foliage W1, and (4) the shoulder W2 by the shoulder aligning device 300 A disc-shaped single leaf portion W1 of the radish W having the same position is cut at a desired position between the position held by the pulling and conveying apparatus 200 and the position held by the shoulder aligning apparatus 300. A first cutting device (a foliage portion) having a foliage rotary blade 410 and a cutting guide bar 420 for guiding the foliage portion W1 toward the rotary blade 410 in order to prevent the foliage portion W1 from being pushed away by the rotary blade 410 and escaping. Cutting device) 400, and (5) after the foliage portion W1 is cut by the first cutting device 400, the remaining portion of the foliage portion W1 is held by the shoulder aligning device 300 and is conveyed rearward. And a second cutting device (body cutting device) 500 having a pair of left and right disk-shaped body cutting rotary blades 510L and 510R for cutting the upper end W2b of the main body W2.

  In the present embodiment, a configuration in which the second cutting device 500 starts cutting the upper end portion W2b of the main body W2 of the radish W after the foliage W1 is completely cut by the first cutting device 400 will be described. However, not limited to this, for example, the second cutting device 500 starts cutting the upper end portion W2b of the main body portion W2 of the radish W before the foliage portion W1 is completely cut by the first cutting device 400. May be.

  The driving force from the engine 4 is transmitted to the drawing / conveying device via a transmission shaft 6b protruding forward from the front end portion of the transmission case 6, and is also transmitted to the transmission mechanisms in the transmission cases 8L and 8R arranged on the left and right. Then, the shoulder aligner 300, the first cutting device 400, and the second cutting device 500 are driven.

  The front end portions of the transmission cases 8L and 8R arranged on the left and right are respectively fixed to a pair of left and right main frames 9L and 9R that form a skeleton part of the airframe and have a substantially inverted U shape when viewed from the side. It is supported by a pair of left and right transmission case support stays 9La, 9Ra.

Further, the front end portions of the pair of left and right pulling conveyance frames 270L and 270R included in the drawing conveyance device 200 are a pair of left and right drawing conveyance device support stays 201L and 201R (fixed to front ends of the pair of left and right main frames 9L and 9R, respectively). As shown in FIG. 1, the pulling / conveying device 200 is supported and fixed from below so as to incline backward and upward at a predetermined working angle θ ₂ (see FIG. 6) in a side view. Further, the rear end portions of the pair of left and right pulling / conveying frames 270L and 270R of the pulling / conveying device 200 are supported and fixed by an upper support stay 205 fixed to the upper surface of a transmission branch case 6d (see FIG. 1) described later. Has been.

  Further, at least the upper surface side of the drawing / conveying device 200 is covered with a pair of left and right drawing / conveying device covers 202L and 202R (see FIGS. 1 and 3). The pair of left and right drawing / conveying device covers 202L and 202R will be described later.

  With the above configuration, the radish drawing machine 1 according to the present embodiment holds the foliage W1 of the radish W by the pulling / conveying device 200 while the advancing mechanism 100 raises the foliage W1 of the radish W while traveling forward. After lifting the radish W from the field Y and cutting the upper portion of the foliage W1 with the first cutting device 400, further cutting the upper end W2b of the main body W2 of the radish W with the second cutting device 500, In this configuration, the radish W is returned to the original hole of the field Y.

  Thereby, the operator can extract the radish W from the field Y with a light force, and does not need to perform the cutting work of the upper end W2b of the main body W2 of the radish W in the post-processing, thereby improving the work efficiency. Labor can be reduced.

  Next, the raising mechanism 100 described above will be further described with reference to FIGS.

  The raising mechanism 100 has (1) a pair of left and right vertical portions that cause the foliage W1 extending mainly in the left-right width direction of the body to rise upward, among the foliage W1 of the radish W extending and extending on the ridge surface of the field Y. The raising devices 110L and 110R and (2) the rear and right vertical raising devices 110L and 110R are arranged on the rear side of the raising devices 110L and 110R. A pair of left and right horizontal pulling devices 130L and 130R that cause the stem and leaf portion W1 extending in the front-rear direction to rise upward, and (3) a pair of left and right vertical pulling devices 110L and 110R, and a pair of left and right horizontal pulling devices 130L. , 130R, and a pulling device driving mechanism 150 that transmits the driving force.

  Each of the pair of left and right vertical pulling devices 110L and 110R includes a pair of vertical pulling drive pulley 111a and a vertical pulling driven pulley 111b, and an endless belt wound around the pair of upper and lower pulleys 111a and 111b. A longitudinally raising belt 112 having a plurality of elongated longitudinally raised protrusions 112a formed on the outer peripheral surface.

  Each of the pair of left and right lateral pulling devices 130L and 130R includes a pair of upper and lower horizontal pulling drive pulleys 131a and a horizontal pulling driven pulley 131b and an endless belt wound around the pair of upper and lower pulleys 131a and 131b. And a laterally-raised belt 132 having a plurality of elongated laterally-raised protrusions 132a formed on the outer peripheral surface.

  Further, as shown in FIG. 3, the pulling device driving mechanism 150 includes a pulling drive chain transmission portion 151 to which a driving force from the engine 4 is input via the transmission shaft 6 b and a drive from the drive chain transmission portion 151. A universal joint 152 for transmitting the force to the left lateral pulling drive pulley 131a, the left lateral pulling drive pulley 131a being inserted and fixed at the rear end, and the first bevel gear 153a being inserted and fixed at the front end. The first transmission shaft 153 for transmitting the driving force to the left longitudinal pulling drive pulley 111a via the first bevel gear 153a, and the second bevel gear 154a are inserted and lowered at both ends and a pair of left and right in the vicinity of the inside. A second transmission shaft 154 in which the longitudinal pulling drive pulleys 111a and 111a are inserted and fixed, and a third bevel gear 155a is inserted and fixed in the front end portion and the right side pulling in the rear end portion. Drive pulley 131a is provided with a third transmission shaft 155 which is inserted and fixed stiffness.

  Further, as shown in FIG. 3, the pull-up drive chain transmission portion 151 is a pull to which the rotational drive force transmitted to the left side is inputted among the rotational drive forces branched in the left-right direction from the front end portion of the transmission shaft 6b. A raising input sprocket 151a, a raising output sprocket 151b that raises and outputs the rotational driving force to the apparatus 100, a raising transmission chain 151c wound around the raising input sprocket 151a and the raising output sprocket 151b, An erecting transmission chain case 151d for storing them.

  The first transmission shaft 153, the second transmission shaft 154, and the third transmission shaft 155 are respectively covered with a cylindrical metal first pipe member 153b, a second pipe member 154b, and a third pipe member 155b. The first pipe member 153b also serves as a fixing member for connecting and fixing the left lateral pulling device 130L and the left vertical pulling device 110L with a fastening member, and the second pipe member 154b. Also serves as a fixing member for connecting and fixing the left vertical pulling device 110L and the right vertical pulling device 110R, and the third pipe member 155b has the right vertical pulling device 110R and the right vertical pulling device 110R. It also functions as a fixing member for connecting and fixing the lateral pulling device 130R with a fastening member (see FIGS. 2 and 3).

  The universal joint 152 is covered with a bellows-like rubber cover 152b (see FIGS. 2 and 3).

  As a result, the pair of left and right vertical pulling belts 112 rotate clockwise when viewed from the left (see arrow P in FIG. 1), and the pair of left and right horizontal pulling belts 132 are in the directions of arrows Q1 and Q2 (see FIG. 1). 4).

  Also, the pair of left and right vertical pulling devices 110L and 110R each effectively exert the pulling function of the foliage portion W1 by the vertical pulling projection 112a, and the foliage portion W1 to the rotating portion such as a belt and a pulley. In order to prevent entrainment, both sides are covered with the outer cover 113a and the inner cover 113b so that only the vertically raised protrusion 112a protruding downward and forward is completely exposed to the outside.

  In addition, the pair of left and right lateral pulling devices 130L and 130R are respectively covered on the front and rear sides with a front cover 133a and a rear cover 133b in order to prevent the foliage W1 from being entangled in a rotating part such as a belt and a pulley. ing.

  Further, the rear end portion of the inner cover 113b that covers each of the pair of left and right vertical pulling devices 110L and 110R from the inside is a fastening member on the front cover 133a that covers each of the pair of left and right horizontal pulling devices 130L and 130R from the front side. Connected and fixed.

  Further, a raising mechanism position adjusting device that adjusts the vertical position of the raising mechanism 100 is provided on the back side of the rear covers 133b and 133b that cover the pair of left and right horizontal raising devices 130L and 130R from the rear side. Front end portions 161La and 161Ra of a pair of left and right parallel link arms 161L and 161R included in 160 are connected and fixed by a fastening member (see FIGS. 1, 3, and 5).

  Next, the raising mechanism position adjusting device 160 will be described mainly with reference to FIGS. 3, 5, and 6.

  FIG. 5 is a schematic side view of the front side of the machine body for explaining the raising mechanism position adjusting device 160 in the radish drawing machine 1 of the present embodiment, and is a view showing a state where the raising mechanism 100 is lowered most.

  FIG. 6 is a schematic side view showing a state where the raising mechanism 100 in the radish drawing machine 1 of the present embodiment is raised.

  As shown in FIGS. 3 and 5, the pulling mechanism position adjusting device 160 includes (1) a pair of left and right parallel link arms 161L and 161R, and (2) a pulling mechanism 100 and a pair of left and right parallel link arms 161L, Rotating operation part that rotates in the vertical direction about a pair of left and right rotating fulcrum 162L, 162R provided on the front end side of each of the pair of left and right substantially inverted U-shaped pipe members 203L, 203R via 161R 170. Here, the pair of left and right substantially inverted U-shaped pipe members 203L and 203R form a substantially inverted U shape in a side view, and both ends of the inverted U shape are a pair of left and right pull-out conveying devices 200 described later. Are fixed to the upper surface side of the drawing conveyance frames 270L and 270R (see FIGS. 1, 3, and 5).

  That is, the front end portions 161La and 161Ra of the pair of left and right parallel link arms 161L and 161R are, as described above, the rear covers 133b and 133b that respectively cover the pair of left and right lateral raising devices 130L and 130R from the rear side. As described above, the rear end portions 161Lb and 161Rb of the pair of left and right parallel link arms 161L and 161R are connected and fixed to the rear side, as described above, of the pair of left and right substantially inverted U-shaped pipe members 203L and 203R. Rotating fulcrums 162L and 162R provided on the respective front end sides are rotatably connected.

  The rotation operation unit 170 is (1) a substantially triangular plate-like member in a side view on the inner side of the left parallel link arm 161L on the outer peripheral surface in the vicinity of the rotation fulcrum 162L. And (2) a protruding length variable device 175 configured such that the protruding length of the front end portion 172a of the female screw shaft portion 172 can be changed, and (3) a pair of left and right substantially A cylindrical protruding length varying device support member 176 that connects the vicinity of the upper outer peripheral surface of the rear curved portion of each of the inverted U-shaped pipe members 203L and 203R, and is disposed in the left-right direction in plan view, have.

  Further, the protruding length varying device 175 has (1) a female screw shaft portion in which a female screw is formed on the inner peripheral wall surface, and an upper end portion of the rotary arm member 171 is rotatably connected to a front end portion 172a thereof. 172, and (2) a male screw is formed on the outer peripheral surface of the front end side 173a, the center portion thereof is protruded and supported by a variable length device support member 176, and a rotary handle 174 is provided at the rear end portion 173b. It has a male screw shaft portion 173 that is connected, and (4) a bellows-like cover member 173c that covers the front end side 173a of the male screw shaft portion 173.

  Here, the central portion of the male screw shaft portion 173 is rotatably supported by the protruding length variable device support member 176, but does not move along the axial direction.

  As a result, the protrusion length varying device 175 has the male screw shaft portion 172 fitted to the female screw on the inner peripheral wall surface of the female screw shaft portion 172 so that the female screw shaft portion 172 has the rotation handle. The length of the protrusion of the front end portion 172a of the female screw shaft portion 172 is changed by moving along the axial direction according to the rotation direction of 174.

  As a result, the operator rotates the rotary handle 174 in a clockwise direction, for example, when viewed from the back, so that the front end portion 172a of the female screw shaft portion 172 protrudes from the side when viewed from the side. , The forward end of the front end portion 172a moves in a direction in which the forward protrusion length becomes shorter (see the arrow I in FIG. 5), so that the left parallel link arm 161L passes through the rotating arm member 171. The left and right horizontal pulling devices 130L and 130R and the left and right pair of vertical pulling devices 110L and 110R are integrated as a pair with the left and right horizontal lifting devices 130L and 130R. Through the parallel link arms 161L and 161R, the pair of left and right pivots 162L and 162R are pivoted clockwise as viewed from the left side and raised (see FIG. 6).

  Further, the operator rotates the rotary handle 174 in a counterclockwise direction, for example, when viewed from the back, so that the front end portion 172a of the female screw shaft portion 172 protrudes from the side when viewed from the side. With respect to the position of, the front end portion 172a moves in the direction in which the forward protrusion length becomes longer (the direction opposite to the direction indicated by the arrow I in FIG. 5), so that the left parallel link arm 161L rotates. Via the arm member 171, it rotates counterclockwise in the left side view around the left rotation fulcrum 162L, and a pair of left and right lateral pulling devices 130L and 130R, and a pair of left and right vertical pulling devices 110L, 110R is integrated and rotated counterclockwise as viewed from the left side around the pair of left and right pivot fulcrums 162L and 162R via a pair of left and right parallel link arms 161L and 161R. (See Figure 5).

In the present embodiment, as shown in FIG. 5, when the raising mechanism 100 is lowered most, the raising mechanism 100 is configured to be substantially perpendicular to the surface of the field Y. That is, at this time, the raising device inclination angle θ ₁ as an angle formed between the pair of left and right horizontal raising devices 130L and 130R and the ridge surface Y1 of the field Y in a side view is approximately 90 °.

  The raising mechanism 100 according to the present embodiment is an example of the raising mechanism according to the present invention. The pair of left and right vertical pulling devices 110L and 110R of the present embodiment is an example of the pair of left and right first pulling devices of the present invention, and the pair of left and right horizontal pulling devices 130L and 130R of the present embodiment are This corresponds to an example of a pair of left and right second raising devices of the present invention.

  Further, the raising mechanism position adjusting device 160 of the present embodiment is an example of the raising mechanism position adjusting device of the present invention. The pair of left and right parallel link arms 161L and 161R of the present embodiment is an example of the pair of left and right connection arms of the present invention, and the rotation operation unit 170 of the present embodiment is the rotation operation unit of the present invention. An example.

  With the above configuration, the raising mechanism 100 is composed of a pair of left and right substantially inverted U-shaped pipe members 203 </ b> L by a pair of left and right parallel link arms 161 </ b> L and 161 </ b> R that are shorter in length than the conventional single rotation arm described above. , 203R, a pair of left and right turning fulcrums 162L and 162R are pivotally connected, so that the raising and lowering position of the raising mechanism 100 can be stably performed even during traveling without significant fluctuations. I can do it.

  Further, since the pulling operation can be performed stably, it can be reliably guided to the pulling and conveying device side without losing the foliage W1, and the failure of pulling out the radish W can be prevented.

  Moreover, according to the said structure, according to the length of the foliage W1, the raising action height Lh (refer FIG. 6) can be adjusted appropriately, and the foliage extended and extended to the ridge surface Y1 of the field W1 can be reliably caused to be held by the drawing / conveying device 200.

  Here, the raising action height Lh (see FIG. 6) means that the pair of left and right vertical raising devices 110L and 110R and the pair of left and right horizontal raising devices 130L and 130R are spread and extended on the ridge surface Y1 of the field. The height from the ridge surface Y1 of the lower field of the raising mechanism 100 which can raise the foliage part W1 reliably is said. In addition, as a specific example of the lower part of the raising mechanism 100, for example, it may be the leading end portion of the vertical raising protrusion 112a located at the lowermost end, or the distal end portion of the horizontal raising protrusion 132a located at the lowermost end. Alternatively, other parts may be used. In the present embodiment, the raising action height Lh refers to the height of the tip of the vertical raising protrusion 112a located at the lower end from the ridge surface Y1 of the field.

Further, according to the raising mechanism position adjusting device 160 of the present embodiment, the raising device inclination angle θ ₁ is approximately 90 ° when the raising mechanism 100 is lowered most (see FIG. 5). It is assumed that when the raising mechanism 100 is raised most, the angle is approximately 60 ° (see FIG. 6).

Thereby, the horizontal distance L ₁ in a side view between the front end portion of the horizontal pulling projection 132a positioned at the lowermost end of the pair of left and right horizontal pulling devices 130L and 130R and the front end portion of the pulling and conveying device 200 (FIG. 6). Is less likely to change back and forth, and the raising action height Lh can be greatly changed.

Further, even when the tilting device tilt angle θ ₁ = 60 °, the front end portion of the horizontal pulling protrusion 132a positioned at the lowermost end of the pair of left and right horizontal pulling devices 130L and 130R, and the front end portion of the pulling and conveying device 200 Since the horizontal distance L ₁ (see FIG. 6) in side view is shorter than that between the radish W strains (for example, 25 cm), slipping of the foliage can be prevented, and the pulling / conveying device 200 is surely secured. Can be handed over to

In the state where the pulling mechanism 100 is raised, the upper end side of the pair of left and right horizontal pulling devices 130L and 130R is a side view, and the front end portion of the pulling / conveying device 200 is overlapped by the overlap distance L ₂ (see FIG. 6). By being arranged so as to cover the upper part, slipping of the foliage part can be prevented, and it can be reliably delivered to the drawing and conveying apparatus 200.

Further, as shown in FIG. 5, the front side (vertical pulling) of the pair of left and right vertical pulling devices 110L and 110R from the front and rear central portions of the horizontal pulling protrusions 132a of the pair of left and right horizontal pulling devices 130L and 130R in a side view. the horizontal distance L ₃ to excluding protrusions 112a) cause the strains radish W (e.g., by having a 25 cm) or less, foliage W1 is, right and left pair of vertical causing stiffness device 110L, lateral pulling from 110R of right and left When being taken over by the raising devices 130L and 130R, the foliage W1 can be prevented from falling, and as a result, the caused foliage W1 can be reliably delivered to the pulling and conveying device 200.

Further, in the present embodiment, the length L ₄ (for example, approximately 70 mm of the arrow) (see FIG. 3) of the vertically raised protrusion 112a is made shorter than the conventional length.

  Thereby, as shown in FIG. 3, the pair of left and right vertical pulling devices 110L and 110R are arranged in a range between the first transmission shaft 153 and the third transmission shaft 155 in plan view. Even if it exists, the width | variety of the front-back direction of the raising mechanism 100 can be narrowed, and the width | variety of the front-back direction of the radish drawing machine 1 can be made small.

Further, in the present embodiment, the length L ₅ (for example, approximately 110 mm of the arrow) (see FIG. 3) of the laterally raised protrusion 132a is longer than the conventional length.

  Thereby, the foliage W1 of the radish W during the drawing work can be reliably taken over and guided to the drawing and conveying apparatus 200.

Further, by adjusting the tilting device tilt angle θ ₁ , rotation that can change the posture of the pulling mechanism 100 (including the pulling action height Lh and the horizontal distance L ₁ ) (see FIG. 6) to an appropriate state. By arranging the handle 174 above the upper end side of the pulling / conveying device 200, the operator can raise the raising mechanism while visually confirming the positional relationship between the lower end portion of the raising mechanism 100 and the foliage W1 of the radish. 100 postures can be adjusted appropriately.

  The rotation handle 174 is rotatably disposed on the protruding length variable device support member 176 on the left side of the substantially inverted U-shaped pipe member 203L on the left side in plan view.

  Thereby, it arrange | positions in the position left | separated on the left side in planar view from the conveyance path of the drawing conveyance apparatus 200 mentioned later, and it can prevent that the rotation handle 174 contacts the foliage part during conveyance.

In the present embodiment, the pitch P ₁ (see FIG. 6) of the vertical pulling projection 112a, the peripheral speed V1 of the vertical pulling belt 112, and the traveling speed Vs during the crop pulling operation are determined by the radish puller 1. Is adjusted so that the vertically raised protrusion 112a is in contact with the foliage W1 of the radish W planted in the predetermined inter-strain Pk at least once while it travels the predetermined inter-strain Pk (for example, 25 cm). ing.

That is, the inter-strain Pk (m), the pitch P ₁ (m) of the vertical raising protrusion 112a, the peripheral speed V1 (m / sec) of the vertical raising belt 112, and the traveling speed Vs (m / sec) during the crop pulling operation running. ) Satisfies the following formula 1.

1 ≦ Pk ÷ Vs × V1 ÷ P ₁ (Equation 1)
Here, the right side of Formula 1 represents the number of vertical pulling projections 112a that pass through the ridge surface Y1 of the field while the radish drawing machine 1 travels between the stocks.

  The following is a description using specific numerical examples.

When the inter-strain Pk = 0.25 m, the traveling speed Vs = 0.236 m / sec during the crop pulling operation traveling, and the circumferential speed V1 = 0.57 m / sec of the vertical pulling belt 112, the pitch P of the vertical pulling projection 112a For example, in the apparatus in which ₁ is set to 0.057 m, Pk ÷ Vs × V1 ÷ P ₁ ≈10.59 (books / stock), and Equation 1 is satisfied.

  As a result, even if the traveling speed Vs is set to the lowest speed, by adjusting each value so as to satisfy Equation 1, the vertical pulling occurs at least once while moving 25 cm, which is an example of the radish stock Pk. The protrusion 112a can be brought into contact with the foliage W1 and scraped up, and the vertical pulling devices 110L and 110R are prevented from failing to raise the foliage W1 during low-speed traveling.

  In addition, with respect to Formula 1, the same relationship exists for the pair of left and right lateral pulling devices 130L and 130R.

That is, in this embodiment, the pitch P ₂ of the laterally raised protrusion 132a (see FIG. 4), the circumferential speed V2 of the laterally raised belt 132, and the traveling speed Vs during the crop pulling work travel are determined by the radish puller 1. Is adjusted so that the laterally raised protrusion 132a comes into contact with the foliage W1 of the radish W planted in the predetermined inter-plant Pk at least once while it travels the predetermined inter-plant Pk (for example, 25 cm). Yes.

That is, the inter-strain Pk (m), the pitch P ₂ (m) of the laterally raised protrusion 132a, the circumferential speed V2 (m / sec) of the laterally raised belt 132, and the traveling speed Vs (m / sec) during the crop pulling operation traveling ) Satisfies the following formula 2.

1 ≦ Pk ÷ Vs × V2 ÷ P ₂ (Equation 2)
Here, the right side of Expression 2 represents the number of laterally raised protrusions 132a that pass through the ridge surface Y1 of the field while the radish drawing machine 1 travels between the stocks.

  The following is a description using specific numerical examples.

When the inter-strain Pk = 0.25 m, the traveling speed Vs = 0.236 m / sec during the crop pulling operation traveling, and the circumferential speed V2 of the lateral pulling belt 132 = 0.57 m / sec, the pitch P of the lateral pulling protrusion 132a For example, in an apparatus in which ₂ is set to 0.084 m, Pk ÷ Vs × V2 ÷ P ₂ ≈7.18 (books / stock), and Expression 2 is satisfied.

  As a result, even if the traveling speed Vs is set to the lowest speed, by adjusting each value so as to satisfy the expression 2, it is caused to occur at least once while moving 25 cm, which is an example of the radish stock Pk. The protrusion 132a can be brought into contact with the foliage W1 and scraped up, and the lateral pulling devices 130L and 130R are prevented from failing to raise the foliage W1 during low-speed traveling.

  Each of the front end portions 161La and 161Ra of the pair of left and right parallel link arms 161L and 161R of the present embodiment corresponds to one end of the pair of left and right connection arms of the present invention, and the pair of left and right parallel links of the present embodiment. The rear end portions 161Lb and 161Rb of the arms 161L and 161R correspond to the other ends of the pair of left and right connecting arms of the present invention.

  The pair of left and right vertical pulling belts 112 and 112 according to the present embodiment is an example of the pair of left and right first pulling belts according to the present invention. This corresponds to an example of a pair of left and right second raising belts according to the present invention.

  Further, the vertical pulling projection 112a of the present embodiment corresponds to an example of the first protruding portion of the present invention, and the horizontal pulling protrusion 132a of the present embodiment corresponds to an example of the second protruding portion of the present invention.

  Also, a pair of upper and lower vertical pulling drive pulleys 111a and vertical pulling driven pulley 111b included in the left vertical pulling device 110L of the present embodiment and a pair of upper and lower vertical pulling drives included in the right vertical pulling device 110R. The pulley 111a and the vertically raised follower pulley 111b correspond to an example of a pair of left and right first raised pulley units according to the present invention.

  Further, a pair of upper and lower horizontal pulling drive pulleys 131a and a horizontal pulling driven pulley 131b included in the left horizontal pulling device 130L of the present embodiment, and a pair of upper and lower horizontal pulling drives included in the right horizontal pulling device 130R. The pulley 131a and the laterally raised driven pulley 131b correspond to an example of a pair of left and right second raised pulley units according to the present invention.

  Further, the first transmission shaft 153 and the third transmission shaft 155 of the present embodiment correspond to an example of a pair of left and right pulley rotation shafts of the present invention. The pair of left and right substantially inverted U-shaped pipe members 203L and 203R of the present embodiment is an example of the pair of left and right connecting arm attachment members of the present invention.

In addition, the pitch P ₁ of the vertical pulling projection 112a in the present embodiment is an example of the pitch of the first protrusion of the present invention, and the peripheral speed V1 of the vertical pulling belt 112 is the first pulling of the present invention. In an example of the peripheral speed of the belt, the traveling speed Vs during the crop pulling operation traveling corresponds to an example of the traveling speed during the crop pulling operation traveling of the present invention.

  Next, the pulling and conveying apparatus 200 will be further described mainly with reference to FIG.

  FIG. 7 is a schematic plan view of the main part of the drawing / conveying apparatus 200.

  As shown in FIG. 7, the drawing / conveying device 200 includes (1) a pair of left and right endless drawing / conveying belts 210L and 210R, and (2) a rear end for driving the pair of left and right drawing / conveying belts 210L and 210R. A pair of left and right pulling drive pulleys 220L and 220R disposed on the side, (3) a pair of left and right pulling driven pulleys 230L and 230R disposed on the front end side, and (4) a pair of left and right pulling conveyance belts 210L and 210R, respectively. The left and right pair of rollers are arranged immediately after the pulling driven pulleys 230L and 230R, and are composed of four clamping rollers for applying a strong pressing force for clamping the foliage W1 of the radish W to the pulling conveyance belt. (5) between the clamping roller group and the pull-out driving pulley, a conveying path through which the pinched leaf portion W1 is conveyed A pair of left and right first tension rollers 250L and 250R, a pair of left and right second tension rollers 251L and 250R, which are arranged from the upstream side to the downstream side with reference to the conveyance direction A (see arrow A in FIG. 7), and A pair of left and right third tension rollers 252L, 252R, (6) a left pulling tension pulley group 260L disposed on the outside and inside of the left pulling and conveying belt 210L and adjusting the tension of the entire left belt, and a right pulling and conveying A right pulling tension pulley group 260R which is disposed outside and inside the belt 210R and adjusts the tension of the entire right belt; and (7) a substantially square column member having a hollow inside, and a bearing portion 271 at each rear end portion. A pair of left and right pull-out conveyance frames 270L and 270R.

  The upper ends of the drive shafts 221 of the pair of left and right pull-out drive pulleys 220L and 220R are rotatably supported by the respective bearing portions 271 of the pair of left and right pull-out conveyance frames 270L and 270R, and the respective drives. The lower end portion of the shaft 221 is connected to the pair of left and right universal joints 6c and 6c, so that power branched in the left and right direction is transmitted from the front end portion of the transmission shaft 6b (see FIG. 1).

  Note that the lower ends of the pair of left and right universal joints 6c, 6c are bearing members provided at upper and lower portions of the left and right ends of a substantially T-shaped transmission branch case 6d (see FIGS. 1 and 3) in plan view. It is connected to the tip of a vertical transmission shaft 6e (see FIGS. 1 and 3) that is rotatably supported by. The transmission branch case 6d is connected to the front end portion of the transmission shaft case that houses the transmission shaft 6b, and the vertical transmission shaft 6e that transmits the power branched in the horizontal direction from the front end portion of the transmission shaft 6b in the vertical direction. The transmission mechanism is housed.

  Further, the left pulling driven pulley 230L and the left holding roller group 240L can rotate with respect to the left holding force adjusting frame 280L attached to the lower surface of the front end portion of the left pulling conveyance frame 270L so that the position can be changed. It is attached to.

  Further, the right pulling driven pulley 230R and the right holding roller group 240R can rotate with respect to the right holding force adjusting frame 280R attached to the lower surface of the front end portion of the right pulling conveyance frame 270R so that the position can be changed. It is attached to.

  Further, each of the pair of left and right clamping force adjustment frames 280L and 280R is provided with two elongated holes 281 in the front and rear direction in the left and right direction, and within the range of the elongated hole 281, the left and right directions (arrows in FIG. 7). H), and a pair of left and right clamping force adjusting frames 280L and 280R are fixed to a pair of left and right pull-out conveyance frames 270L and 270R by fastening members 282 such as bolts and nuts. is there.

  As a result, the operator loosens the fastening member 282 and slides and positions the pair of left and right clamping force adjustment frames 280L and 280R in the left and right direction (see arrow H in FIG. 7). By firmly fixing each of the pair of clamping force adjusting frames 280L and 280R to the pair of left and right pulling conveyance frames 270L and 270R, the gap G (see FIG. 7) between the pair of left and right pulling conveyance belts 210L and 210R is easy. Can be adjusted.

  Therefore, the operator can easily adjust the clamping force on the upstream side of the conveyance path of the pulling and conveying apparatus 200 in accordance with the thickness of the foliage W1 of the radish W and the working time (whether there is morning dew). Is too weak to prevent the radish W from being pulled out of the field and to be manually pulled out, and the pinching force is too strong to crush the foliage W1, and the shoulder aligner 300 removes the foliage W1. Since it cannot be taken over and can be prevented from being returned to the original hole in the field with the upper end portion W2b of the main body portion W2 of the radish W remaining, the upper end portion W2b of the main body portion W2 of the radish W is removed in a later step. This work does not occur.

  Further, the operation of adjusting the clamping force on the upstream side of the conveyance path of the pulling and conveying apparatus 200 can be easily performed by loosening the fastening member 282 and sliding the pair of left and right clamping force adjustment frames 280L and 280R. As a result, work efficiency is improved.

  Instead of the above-described configuration for adjusting the clamping force of the pulling / conveying device 200 using the fastening member 282, for example, a radish for eating, radish for processing (for example, for oden), pickles It is good also as a structure which switches the said clamping force by a single touch in three steps about the daikon radish.

  Next, the four sandwiching rollers constituting the pair of left and right sandwiching roller groups 240L and 240R will be described with reference to FIGS. 8 (a) and 8 (b).

  FIG. 8A is a schematic diagram for explaining the two-stage roller member 241a among the four clamping rollers constituting the pair of left and right clamping roller groups 240L and 240R, and is a cross-sectional view taken along the line EE in FIG. It is an arrow view. FIG. 8B is a schematic diagram for explaining a single-stage roller member 241b among the four sandwiching rollers constituting the pair of left and right sandwiching roller groups 240L and 240R, and FF in FIG. It is a cross-sectional arrow view.

  The four clamping rollers constituting the pair of left and right clamping rollers 240L and 240R mounted on the pair of left and right clamping force adjusting frames 280L and 280R are close to the pair of left and right pulling driven pulleys 230L and 230R as shown in FIG. In order from the side, there is one two-stage roller member A241a (see FIG. 8A), followed by one single-stage roller member 241b (see FIG. 8B), and then a two-stage roller member 241a. Two (see FIG. 8A) are respectively arranged (see FIGS. 1 and 7).

  As shown in FIG. 8A, the two-stage roller member 241a has upper and lower two-stage rollers that are in contact with the inner wall surfaces of the pair of left and right pull-out conveyor belts 210L and 210R, and are rotatably attached to the long shaft 241a1. The rib-like protrusions 211 protruding inward from the inner wall surfaces of the pair of left and right pull-out conveying belts 210L and 210R are inserted into the gap between the upper and lower two-stage rollers, so that the pressing force by the rollers can be reduced. It is a structure that is reliably transmitted to the side.

  As shown in FIG. 8B, the one-stage roller member 241b has an upper one-stage roller that is in contact with the inner wall surfaces of the pair of left and right pull-out conveyance belts 210L and 210R and is rotatably attached to the short shaft 241b1. The upper roller is disposed on the upper side of the rib-shaped protrusion 211 protruding inward from the inner wall surface of the pair of left and right pull-out conveyor belts 210L and 210R, so that the pressing force is applied to the belt side by the upper roller. And a space is secured below the roller.

  Further, since the one-stage roller member 241b is disposed corresponding to the position where the leaf and leaf portion W1 of the radish W is handed over from the pulling and conveying apparatus 200 to the shoulder aligning apparatus 300, the one-stage roller member on the bottom side of the pulling and conveying apparatus 200. Since the front end portions of the pair of left and right shoulder alignment belts 310L and 310R of the shoulder alignment device 300 can be inserted into the space 241b (see FIG. 8B), the shoulder alignment device and the pulling / conveying device 200 are aligned with the shoulder. The gap with the device 300 can be shortened, and the foliage W1 can be reliably taken over.

  As a result, the two-stage roller member 241a is brought into contact with both sides of the rib-like protrusions 211 of the pair of left and right pull-out conveying belts 210L and 210R to increase the holding force, thereby pinching the reaction force when pulling out the radish W. Can be prevented, so that the radish W can be reliably pulled out from the field.

  Further, in the pair of left and right drawing conveyance belts 210L and 210R, the front end portion of the shoulder aligning device 300 is disposed adjacent to the portion without the lower roller, and the foliage W1 is sandwiched by the one-stage roller member 241b via the belt. Therefore, the foliage W1 is prevented from falling off when the shoulder alignment device 300 takes over.

  In addition, the left pulling conveyance frame 270L supports the left first tension roller 250L, the left second tension roller 251L, and the left third tension roller 252L at respective one end portions in a rotatable manner. A first rotating arm 250b and a second rotating arm, to which the front end of the first tension spring 250a, the front end of the second tension spring 251a, and the front end of the third tension spring 252a are attached to the other end, respectively. 251b and the 3rd rotation arm 252b are attached so that rotation is possible centering on the 1st rotation fulcrum 250c, the 2nd rotation fulcrum 251c, and the 3rd rotation fulcrum 252c.

  Accordingly, the rear end portions of the first rotation arm 250b, the second rotation arm 251b, and the third rotation arm 252b are fixed to the side surface of the left pull-out conveyance frame 270L, respectively. Due to the elastic force (contraction force) of the first tension spring 250a, the second tension spring 251a, and the third tension spring 252a, an urging force that always rotates clockwise in plan view is acting. Due to the urging force, the first tension roller 250L on the left side, the second tension roller 251L on the left side, and the third tension roller 252L on the left side press the inner peripheral surface of the left pull-out conveying belt 210L with different pressing forces. It is a configuration.

  That is, in the present embodiment, the pressing force by the left first tension roller 250L, the left second tension roller 251L, and the left third tension roller 252L becomes weaker from the upstream side to the downstream side of the conveyance path. In this manner, the elastic forces of the first tension spring 250a, the second tension spring 251a, and the third tension spring 252a are adjusted in advance.

  Also for the right pull-out conveyance frame 270R, the first rotation arm 250b, the second rotation arm 251b, and the third rotation arm 252b are also in the first rotation in the same manner as the left-side extraction conveyance frame 270L. The fulcrum 250c, the second rotation fulcrum 251c, and the third rotation fulcrum 252c are attached so as to be rotatable.

  Accordingly, the first tension roller 250R on the right side, the second tension roller 251R on the right side, and the third tension roller 252R on the right side gradually weaken the inner peripheral surface of the right pulling conveyance belt 210R in the order described. It is the structure pressed with the preset pressing force.

  Further, at the rear end portion of the pulling and conveying apparatus 200, the foliage W1 cut by the first cutting apparatus 400 passes through the rear side of the outer peripheral edge of the right pulling driving pulley 220R and is discharged toward the right side of the machine body. Thus, the foliage discharge member 290 is provided.

  As shown in FIG. 2, the foliage discharge member 290 is curved in a generally U shape in plan view, and the curved portion is located outside the pull-out drive pulley 220 </ b> R on the right side from the exit side of the transport path of the pull-out transport device 200. An upper foliage discharge guide 291 and a lower foliage discharge guide 292, which are rod-shaped members having a circular cross section, are respectively arranged above and below the right pull-out drive pulley 220R along the rear side of the peripheral edge. It is configured.

  The base 291a of the upper foliage discharge guide 291 is detachably fixed to the left pulling and conveying device cover 202L by bolts, and the tip 291b of the upper foliage discharge guide 291 extends toward the right side of the machine body.

  Further, the base 292a of the lower foliage discharge guide 292 is attached to and detached from a guide fixing plate (not shown) whose one end is fixed to the inner side surface of the left pull-out conveying frame 270L and the other end extends downward. The tip 292b of the lower foliage discharge guide 292 extends toward the right side of the aircraft.

  In addition, the radish W of this Embodiment corresponds to an example of the crop of this invention. Further, the stem and leaf portion W1 of the present embodiment corresponds to an example of the leaf portion of the present invention.

  Moreover, the leaf part of the crop of the present invention refers to the upper part (refer to reference sign W1 in FIG. 1) from the thickened part of the crop. In addition, in this specification, the part (refer code | symbol W2 of FIG. 1) from the place where the crop (for example, radish) becomes thick is called the main part of a crop (for example, radish).

  Moreover, the drawing / conveying apparatus 200 of the present embodiment corresponds to an example of the drawing / conveying apparatus of the present invention.

  Further, the configuration including the pair of left and right pulling conveyor belts 210L and 210R, the pair of left and right pulling driving pulleys 220L and 220R, and the pair of left and right pulling driven pulleys 230L and 230R of the present embodiment is a pair of left and right pulling and conveying belts of the present invention. This is an example of a belt unit.

  Further, the pair of left and right pulling conveyance frames 270L and 270R of the present embodiment is an example of the belt unit support frame of the present invention.

  Next, the shoulder alignment device 300 described above will be further described mainly with reference to FIG.

  FIG. 9 is a schematic plan view of a main part of the shoulder aligner 300.

  As shown in FIG. 9, the shoulder aligning device 300 includes (1) a pair of left and right endless shoulder aligning belts 310L and 310R arranged below the pulling and conveying device 200, and (2) the pair of left and right shoulders. A pair of left and right shoulder alignment drive pulleys 320L and 320R disposed on the rear end side for driving the alignment belts 310L and 310R; and (3) a pair of left and right shoulder alignment driven pulleys 330L and 330R disposed on the front end side; (4) A pair of left and right shoulder aligned first rollers 340L and 340R disposed on the downstream side of the pair of left and right shoulder aligned driven pulleys 330L and 330R with reference to the conveyance direction A ′ (see arrow A ′ in FIG. 9); (5) A pair of left and right shoulder aligned second rollers disposed downstream of the pair of left and right shoulder aligned first rollers 340L and 340R and upstream of the pair of left and right shoulder aligned drive pulleys 320L and 320R 50L, 350R, and (6) left shoulder alignment tension pulley group 360L arranged on the outside and inside of the left shoulder alignment belt 310L to adjust the tension of the entire left belt, and on the outside and inside of the right shoulder alignment belt 310R. A right-shoulder-aligned tension pulley group 360R that adjusts the tension of the entire belt on the right side, and (7) a plate member having a substantially rectangular shape in plan view, and a pair of left and right shoulders aligned at the front end The driven pulley support portion 331 that supports each of the driven pulleys 330L and 330R so as to be rotatable from the lower side is held so that its mounting position can be changed (see arrow H in FIG. 9), and at each rear end portion , A drive pulley support that rotatably supports the shoulder alignment drive shafts 321 of the pair of left and right shoulder alignment drive pulleys 320L and 320R. Not shown) is fixed by welding a pair of right and left shoulders aligned stay 370L, comprises a 370R, the.

  The pair of left and right shoulder alignment stays 370L and 370R are arranged on the lower surface side of the pair of left and right shoulder alignment driving pulleys 320L and 320R and the pair of left and right shoulder alignment driven pulleys 330L and 330R, A pair of left and right main frames 9L, 9R are detachably connected to the front end portions of the main frames 9L, 9R via a mounting plate (not shown) fixed by welding.

  Further, the upper end portions of the shoulder alignment drive shafts 321 and 321 of the pair of left and right shoulder alignment drive pulleys 320L and 320R are respectively a pair of left and right second sprockets to be described later housed in transmission cases 8L and 8R disposed on the left and right. The rotation shafts of the shoulder-aligned drive shafts 321 and 321 are inserted and connected to each other by a spline connection, and the lower end portions of the shoulder alignment drive shafts 321 and 321 are respectively a pair of left and right disk-shaped cylindrical cutting rotary blades 510L and 510R (FIG. 9). And a disc-shaped spacer (not shown) having a predetermined thickness are detachably mounted.

  That is, the pair of left and right disk-shaped drum cutting rotary blades 510L and 510R are mounted on the shoulder alignment drive shaft 321 at positions slightly shifted from each other in the vertical direction in a side view, and the respective diameters are shown in FIG. In the same manner, the outer peripheral portions of the rotary blades are set so as to overlap below the conveyance path formed between the pair of left and right shoulder alignment belts 310L and 310R in a plan view. In addition, the pair of left and right discoid body-cutting rotary blades 510L and 510R can change the number of spacers (not shown) that are detachably mounted between the bottom surfaces of the pair of left and right shoulder alignment driving pulleys 320L and 320R. is there.

  Accordingly, the driving force of the shoulder aligning device 300 is provided by providing the pair of left and right body cutting rotary blades 510L and 510R of the second cutting device 500 on the shoulder aligning drive shafts 321 and 321 of the pair of left and right shoulder aligning drive pulleys 320L and 320R. Since the second cutting device 500 can be driven using this, the number of parts is reduced and the weight of the machine body can be reduced.

  Further, by providing a pair of left and right body cutting rotary blades 510L and 510R, the upper end W2b of the radish W can be sandwiched from the left and right, so that the upper end W2b of the radish W can be completely cut off from the field Y. The cut surface of the extracted radish W is finished beautifully.

  Further, by adopting a configuration in which the spacer can be detachably mounted between the upper surfaces of the pair of left and right disc-shaped rotary blades 510L and 510R and the lower surfaces of the pair of left and right shoulder drive pulleys 320L and 320R, Since the cutting position of the upper end W2b of the main body W2 can be changed, the cutting position can be realized in accordance with the size of the radish and the conditions at the time of shipment, and the work efficiency is improved.

  Further, a boss (not shown) having a predetermined height is provided at the center of the upper surfaces of the pair of left and right body cutting rotary blades 510L and 510R. (1) When the spacer is not mounted, A certain gap is formed by securing a predetermined height due to the presence of the boss between the lower surface of the shoulder aligning driving pulleys 320L and 320R and the upper surface of the pair of left and right body cutting rotary blades 510L and 510R. 2) When the spacer is mounted, the boss is interposed between the lower surface of the spacer mounted on the lower surface side of the pair of left and right shoulder alignment driving pulleys 320L and 320R and the upper surface of the pair of left and right body cutting rotary blades 510L and 510R. It is the structure which forms a fixed clearance gap by ensuring the predetermined height by presence of.

  Thereby, a constant gap can always be secured on the upper surface of the pair of left and right body cutting rotary blades 510L and 510R, so fragments such as the upper end W2b of the radish W cut by the pair of left and right body cutting rotary blades 510L and 510R, The spacer mounted between the lower surface of the pair of left and right shoulder alignment drive pulleys 320L and 320R and the upper surface of the pair of left and right body cutting rotary blades 510L and 510R or on the lower surface side of the pair of left and right shoulder alignment drive pulleys 320L and 320R Since the clogging can be prevented between the lower surface of the right and the upper surfaces of the pair of left and right body cutting rotary blades 510L and 510R, the work of removing the clogged radish W debris becomes unnecessary. Further, even when the spacer is not mounted, a certain gap is secured between the lower surfaces of the pair of left and right shoulder driving pulleys 320L and 320R and the upper surfaces of the pair of left and right body cutting rotary blades 510L and 510R. It is possible to prevent the pair of left and right body cutting rotary blades 510L and 510R from coming into contact with the lower surfaces of the pair of left and right shoulder alignment belts 310L and 310L.

  In addition, as described above, the pair of left and right shoulder alignment stays 370L and 370R are attached to and detached from the front end portions of the pair of left and right main frames 9L and 9R via attachment plates (not shown) with fastening members (for example, bolts and nuts). Each of the upper end portions of the shoulder alignment drive shafts 321 and 321 is detachably inserted and connected to the rotation shafts of a pair of left and right second sprockets 620L and 620R described later by spline connection. As a result, in the case of only rough cutting work in which the cutting positions of the foliage W1 are not aligned, the shoulder aligning device 300 can be removed, so that the width (degree of freedom) of work contents that can be handled is widened.

  Further, the left shoulder alignment first roller 340L is rotatably attached to a left belt interval first adjustment plate 341L attached to the lower surface of the left shoulder alignment stay 370L so that the position thereof can be changed.

  Further, the right shoulder alignment first roller 340R is rotatably attached to the right belt interval first adjustment plate 341R attached to the lower surface of the right shoulder alignment stay 370R so that the position thereof can be changed.

  Further, each of the pair of left and right belt spacing first adjustment plates 341L and 341R is provided with a long hole 342 that is long in the left-right direction, and within the range of the long hole 281 (see arrow H in FIG. 9). ), And after positioning, a pair of left and right belt spacing first adjustment plates 341L and 341R are fixed to a pair of left and right shoulder alignment stays 370L and 370R by fastening members 343 such as bolts and nuts. is there.

  Further, the left shoulder alignment second roller 350L is rotatably mounted on a left belt interval second adjustment plate 351L attached to the lower surface of the left shoulder alignment stay 370L so that the position thereof can be changed.

  Also, the right shoulder alignment second roller 350R is rotatably attached to the right belt interval second adjustment plate 351R attached to the lower surface of the right shoulder alignment stay 370R so that the position thereof can be changed.

  Further, each of the pair of left and right belt spacing second adjustment plates 351L and 351R is provided with a long hole 342 which is long in the left and right direction, and within the range of the long hole 281 (see arrow H in FIG. 9). ), And a pair of left and right belt spacing second adjustment plates 351L and 351R are fixed to a pair of left and right shoulder alignment stays 370L and 370R by fastening members 343 such as bolts and nuts. is there.

  As a result, the operator loosens the fixing members (not shown) that individually fix the pair of left and right driven pulley support portions 331 and 331 to the pair of left and right shoulder alignment stays 370L and 370R, respectively. A pair of left and right driven pulleys are fixed by the respective fixing members after being slid and positioned in the left and right direction (see arrow H in FIG. 7) so that the belt interval J1 on the entrance side of the transport path becomes a desired dimension. The support portions 331 and 331 are firmly fixed to the pair of left and right shoulder alignment stays 370L and 370R.

  Furthermore, the operator loosens the fastening member 343, and the belt interval of the conveyance path gradually becomes narrower from the upstream side toward the downstream side, and the first cutting device 400 (see FIGS. 1 and 9) in plan view. Therefore, the pair of left and right belts J2 (see FIG. 9) at the position opposed to the pair of left and right shoulder aligned second rollers 350L and 350R, which roughly corresponds to the position where the cutting of the foliage W1 is started, is minimized. The belt interval first adjustment plates 341L, 341R and the pair of left and right belt interval second adjustment plates 351L, 351R on the downstream side thereof are individually slid in the left-right direction (see arrow H in FIG. 9). After the positioning, a pair of left and right belt interval first adjustment plates 341L and 341R and a pair of left and right belt interval second adjustment plates are set by the respective fastening members 343. By easily fixing each of 351L and 351R to a pair of left and right shoulder alignment stays 370L and 370R, the distance J1 to J2 (see FIG. 9) between the pair of left and right shoulder alignment belts 310L and 310R can be easily adjusted. I can do it.

  Therefore, according to the above configuration, the operator can adjust the pair of left and right driven pulley support portions 331 and 331, the pair of left and right belt interval first adjustment plates 341L and 341R, and the pair of left and right pair of left and right belt intervals. The plates 351L and 351R can be individually slid in the left and right direction (see arrow H in FIG. 9) and positioned, and can be firmly fixed to the pair of left and right shoulder stays 370L and 370R. The width of the passage formed by the shoulder alignment belts 310L and 310R (see reference numerals J1 and J2 in FIG. 9) is adjusted widely, for example, in the case of a large radish diameter (20 mm to 60 mm) for oden, In the case of a small radish diameter (10 mm to 40 mm) for pickles, it can be adjusted narrowly.

  Further, the single foliage rotary blade 410 of the first cutting device 400 described above is provided on a rotating shaft 721 protruding upward from a second sprocket 720 for first cutting device (described later) housed in the left transmission case 8L. On the other hand, it is detachably inserted and connected by spline connection, and the mounting height of the single foliage rotary blade 410 can be changed.

  Further, the cutting guide bar 420 of the first cutting device 400 described above has a substantially inverted L shape in side view, and its lower end is welded and fixed to the side surface of the right shoulder alignment stay 370R. The distal end side of the upper end portion is located above the rotary blade 410 so as not to interfere with the single foliage rotary blade 410 and is disposed at a position overlapping the outer peripheral portion of the rotary blade 410 in plan view. (See FIG. 9).

  According to the above configuration, when the radish W is pulled out, the pulling / conveying device 200 can be pulled out by appropriately performing the left / right direction (see arrow H in FIG. 7) of the pair of left and right clamping rollers 240L and 240R of the drawing / conveying device 200. On the other hand, in the range where the greatest load is applied, the pressing force by each clamping roller is reliably transmitted to the pair of left and right drawing conveyance belts 210L and 210R, and the foliage W1 of the radish W is firmly clamped and moved rearward and obliquely upward. Accordingly, the main body W2 of the radish W is reliably pulled out from the field Y.

  Thereafter, as the pair of left and right first tension rollers 250L and 250R is conveyed toward the third tension rollers 252L and 252R, the belt clamping force by each tension roller of the pulling and conveying apparatus 200 becomes weaker.

  On the other hand, the belt interval J1 (see FIG. 9) on the entrance side of the conveyance path in the shoulder aligner 300 arranged horizontally with respect to the field Y is below the shoulder W2a at the upper end of the radish W. Is set so as not to pass through upward, and is configured not to prevent upward movement of the radish W by the pulling and conveying device 200. However, as described above, the belt interval of the conveying path of the shoulder aligning device 300 is as follows. As it goes from the upstream side toward the downstream side, it gradually becomes narrower, and the clamping force by the pair of left and right shoulder alignment belts 310L, 310R becomes gradually stronger.

  Thereby, as shown in FIG. 1, the foliage portion W1 of the radish W is moved rearward and obliquely upward along the conveyance direction A (see FIG. 7) of the pulling and conveying device 200, but the main body W2. The upper end shoulder W2a of the shoulder aligner 300 is in contact with the lower surfaces 310La and 310Ra (see FIG. 8B) of the pair of left and right shoulder aligning belts 310L and 310R of the shoulder aligning device 300, so that upward movement is restricted. . When the shoulder W2a of the radish W comes into contact with the lower surfaces 310La and 310Ra of the pair of left and right shoulder alignment belts 310L and 310R, the gripping force by the pulling / conveying device 200 is weak and the gripping force by the shoulder alignment device 300 is strong. Therefore, on the downstream side from the contact position, the upward movement of the shoulder W2a is restricted, and in the vicinity of the position where the cutting of the foliage W1 is started by the first cutting device 400 (see FIGS. 1 and 9). The position of the shoulder W2a of the radish W in the height direction is aligned.

  Thereby, since the position of the shoulder W2a of the radish W is aligned by the shoulder aligner 300, the foliage W1 of the radish W can be cut at a desired position by the first cutting device 400, and the second cutting is performed. The apparatus 500 can reliably cut the upper end W2b of the main body W2 of the radish W at a desired position, and the cut surface is finished neatly.

  In addition, after the upper end W2b of the main body W2 of the radish W is cut, the main body W2 of the radish W falls and returns to the original hole (see FIG. 1).

  Therefore, it is not necessary to perform the cutting operation of the upper end W2b of the main body W2 of the radish W in post-processing, so that the work efficiency can be improved and the labor can be reduced.

  Further, since the foliage W1 cut by the first cutting device 400 does not have the upper end W2b of the radish W, the upper foliage discharge guide 291 and the lower foliage discharge from the exit of the conveyance path of the pulling conveyance device 200. It is guided by the guide 292 and is smoothly discharged to the right side of the aircraft without being caught.

  In addition, the upper end W2b of the radish W cut by the second cutting device 500 is discharged directly from the exit side of the conveying path of the shoulder aligner 300.

  Further, the structure can be simplified by reducing the cost and the machine body by providing the pair of left and right body cutting rotary blades 510L and 510R to the shoulder alignment drive shafts 321 and 321 of the pair of left and right shoulder alignment drive pulleys 320L and 320R. Can be reduced in weight.

  Next, referring to FIG. 9, the driving force from the engine 4 is transmitted to the pair of left and right shoulder driving pulleys 320L and 320R and the pair of left and right body cutting rotary blades 510L and 510R arranged coaxially with them. A pair of left and right first chain transmission mechanisms 600L and 600R housed in the left and right transmission cases 8L and 8R will be described, and the driving force from the engine 4 will be transmitted to a single foliage rotary blade 410. The second chain transmission mechanism 700 housed in the transmission case 8L disposed on the left side will be described.

  As shown in FIG. 9, the pair of left and right first chain transmission mechanisms 600L and 600R are (1) the power branched in the left-right direction from the front end portion of the transmission shaft 6b (see FIG. 9) is the left and right of the transmission branch case 6d. A pair of left and right first sprockets 610L and 610R transmitted via vertical transmission shafts 6e disposed vertically at both ends; and (2) a pair of shoulder alignment drive shafts 321 and 321 of a pair of left and right shoulder alignment drive pulleys 320L and 320R. A pair of left and right second sprockets 620L and 620R which are arranged at the upper end and are spline-connected to the pair of left and right shoulder alignment driving pulleys 320L and 320R; and (3) a pair of left and right first sprockets 610L and 610R And a pair of left and right first transmission chains 630L and 630R wound around a pair of second sprockets 620L and 620R.

  Further, as shown in FIG. 9, the second chain transmission mechanism 700 is (1) the left first sprocket to which the power branched in the left direction from the front end of the transmission shaft 6b (see FIG. 9) is transmitted. A first sprocket 710 for a first cutting device disposed coaxially with 610L and above the first sprocket 610L, and (2) coaxially with a rotational axis of a single foliage rotary blade 410, and with the rotary blade 410 The first cutting device second sprocket 720 and the first cutting device first sprocket 710 and the first cutting device second sprocket. 720, and a second transmission chain 730 wound around 720.

  Moreover, since the space is secured below the second cutting device 500 by the above configuration, the upper end W2b is cut and comes into contact with the radish W returned to the original hole of the field Y, and the main body W2 is damaged. This prevents the product value from being lowered.

  In addition, by arranging the pair of left and right shoulder alignment belts 310L and 310R so as to be substantially horizontal with respect to the field scene, when aligning the position of the shoulder W2a at the upper end of the main body W2 of the radish W, Since the shoulder W2a at the upper end of the main body W2 of the radish W comes into contact with the lower surfaces 310La and 310Ra of the pair of left and right shoulder alignment belts 310L and 310R, it can be prevented from being lifted further upward. The belt is prevented from turning up and coming off.

  In addition, since the pulling and conveying apparatus 200 is provided with a pair of left and right holding roller groups 240L and 240R, the holding force near the entrance of the conveying path of the drawing and conveying apparatus 200 is increased. Can be reliably pulled out from the field, improving the efficiency of the radish collection work.

  Further, each of the pair of left and right pulling / conveying device covers 202L and 202R described above is configured to be divided forward and backward in the vicinity of the center in a plan view as shown in FIG.

  That is, the left pulling / conveying device cover 202L includes a left front cover 202La and a left rear cover 202Lb, and the right pulling / conveying device cover 202R includes a right front cover 202Ra and a right rear cover 202Rb. Has been.

  Thereby, for example, when adjusting the right pulling drive pulley 220R side, the necessary work can be performed by removing only the right rear cover 202Rb portion of the right pulling conveyance device cover 202R. When adjusting the pull-out driven pulley 230L side, a necessary work can be performed by removing only the left front cover 202La portion of the left-side pull-out conveying device cover 202L, so that work efficiency is improved.

  Further, as shown in FIG. 1, each of the pair of left and right drawing / conveying device covers 202L, 202R sandwiches and conveys the foliage W1 of the radish W among the outer peripheral side surfaces of the pair of left and right drawing conveying belts 210L, 210R. A pair of left and right conveying belt cover overhanging portions 202LL that covers a portion constituting the conveying path, a peripheral portion of the pair of left and right pulling drive pulleys 220L and 220R, and a portion excluding the peripheral portion of the pair of left and right pulling driven pulleys 230L and 230R. , 202RR.

  In addition, the pair of left and right conveying belt cover overhang portions 202LL and 202RR in the left rear cover 202Lb and the right rear cover 202Rb covers the first cutting device 400 and the second cutting device 500 from the left and right sides in a side view. Under the foliage discharge member 290, both side back covers 204 that cover the rear end side of the pulling and conveying apparatus 200 in a plan view are detachably fixed with bolts and nuts.

  Thereby, it can prevent that the foliage W1 cut | disconnected on the 1st cutting device 400 falls, and a cutting | disconnection defect generate | occur | produces.

  Moreover, since this can cover the foliage rotary blade 410 and the pair of left and right body cutting rotary blades 510L and 510R, safety is improved.

  Next, the tire air pressure of the gauge wheel 2 will be described.

  That is, the air pressure of the tire of the gauge wheel 2 of the present embodiment is opposite to the pulling direction that the pulling and conveying device 200 receives from the radish W planted in the field when the radish W is pulled by the pulling and conveying device 200. It is configured to be adjustable by the operator so that all or part of the reaction force in the direction can be absorbed by deformation of the tire of the gauge wheel 2. Specifically, the operator does not put air into the tire of the gauge wheel 2 until it reaches the limit value, but puts it in a slight manner.

  Thereby, all or a part of the downward reaction force generated when the drawing / conveying device 200 pulls out the radish W is absorbed by the deformation of the tire of the gauge wheel 2, and therefore, by the large downward load on the drawing / conveying device 200, It is prevented that the front side of the machine body is inclined to the side opposite to the position of the gauge wheel 2, that is, the side where the gauge wheel 2 is not attached, and the drawing work height is largely changed in the vertical direction.

  Further, the radish drawing machine 1 of the present embodiment may have a configuration in which an internal pressure detection sensor (not shown) for detecting the internal pressure of the tire of the gauge wheel 2 is provided inside the gauge wheel 2. In the case of this configuration, when a control unit (not shown) mounted on the radish drawing machine 1 determines that the internal pressure detected by the internal pressure detection sensor has reached a predetermined value or more, an alarm is given to an alarm device (not shown). A motor or a hydraulic cylinder (not shown) provided in the support stay moving mechanism 10 that outputs a signal for generating a sound and moves the support stay 2a in the vertical direction (see arrow T in FIG. 1), etc. A signal for increasing the drawing work height of the drawing conveying apparatus 200 is output. Thereby, the drawing work by the drawing conveyance device 200 can be assisted.

  Then, when the control unit determines that the internal pressure detected by the internal pressure detection sensor has dropped below a predetermined value, the control unit stops outputting a signal for increasing the extraction work height of the extraction conveyance device 200, and Stops outputting a signal for generating an alarm sound to the alarm device.

  Thereby, since the drawing operation is not continued in a state where the front end portion of the drawing / conveying device 200 is lowered too much, it is possible to prevent the radish W from being unsuccessfully held and the radish W from being pulled out. .

  In addition, since the control unit automatically turns on / off (drives or stops) the motor or the hydraulic cylinder or the like, no complicated operation is required, and the radish extraction work can be performed reliably.

  Further, in the radish drawing machine 1 of the present embodiment, an inclination sensor (not shown) for detecting the inclination in the longitudinal direction of the aircraft is provided, and when the control unit determines that the longitudinal inclination angle of the aircraft has become ± 3 ° or more, The driving of the motor or hydraulic cylinder (not shown) provided in the above-described support stay moving mechanism 10 may be stopped to suppress the amount of change in the extraction work height of the extraction conveyance device 200.

  Thereby, since the variation width of the drawing work height of the drawing conveying apparatus 200 becomes too large, the drawing work height is prevented from becoming inappropriate, and the radish drawing work can be performed more reliably.

  In the case of this configuration, the inclination sensor is preferably provided in the vicinity of the entrance of the conveyance path of the drawing conveyance apparatus 200. As a result, the inclination angle can be detected at a portion where the posture change frequency of the drawing / conveying device 200 is high, and thus it is possible to respond sharply to changes in the drawing work height.

  Next, a soyler 800 for cutting roots extending from the main body W2 of the radish W into the ground during the drawing traveling work will be described with reference to FIGS. 10 (a) to 10 (c).

  FIG. 10A is a partial schematic left side view of the machine body for explaining the soyler 800 provided in the radish drawing machine 1 of the present embodiment. The soyler 800 at the time of drawing out the radish is shown by a solid line, and the soyer 800 in the retracted state at the time of non-working (running) is shown by a two-dot chain line.

  FIG.10 (b) is a MM cross-sectional arrow view of the soyler 800 shown to Fig.10 (a). FIG. 10C is a cross-sectional view in the same cross section as FIG. 10B of another example of the solitary blade having a single-edged inclined surface direction different from that of the soyler 800 shown in FIG. is there.

  As shown in FIGS. 10 (a) and 10 (b), the soyler 800 according to the present embodiment is substantially L-shaped in a side view, the blade edge of the single blade faces forward, and the inclined surface 801 of the single blade. Are arranged so as to be substantially parallel to the center line CL of the airframe in plan view.

  Further, a rectangular soy stay 810 for holding the sourer 800 so as to be slidable is fixed to the front end side of the right main frame 9R.

  A long hole 811 that is inclined obliquely upward from the front side to the rear side is formed in the soyle stay 810, and penetrates the long hole 811 and a hole provided at the approximate center of the upper side of the soyer 800. A detachment split pin is detachably attached to the distal end side of the arranged sora holding pin 820.

  Thereby, when the split pin for retaining is pulled out, the soliter holding pin 820 can be pulled out. Therefore, in a work place where the soy 800 is unnecessary (for example, a place where the soil is soft and the soy 800 is used, the wrinkles are too crushed) Soiler 800 can be removed without tools, and it is possible to flexibly cope with changes in work conditions.

  It should be noted that the solitary holding pin 820 has a hole for mounting a retaining split pin extending from the root side to the leading end side of the solitary holding pin 820 so that the hole for mounting the retaining pin is perpendicular to the central axis of the solitary holding pin 820. A plurality are provided at different positions along the line.

  Accordingly, when the split pin for retaining is pulled out, the sora holding pin 820 can be pulled out, so that the soyler 800 can be mounted on any one of the left and right side surfaces of the soystay 810.

  In addition, since a plurality of holes for mounting the retaining split pins are provided, a spacer is inserted between the soyler 800 and the soyle stay 810, and a hole on the tip side is formed as a hole for inserting the retaining split pins. By selecting, the position adjustment in the lateral direction can be performed when the soiler 800 is attached.

  The radish streak may vary depending on the region and the field area, but the mounting position of the soyler 800 can be adjusted so that the mounting position is suitable for each strip.

  In addition, at a substantially central portion in the front-rear direction of the right main frame 9R, a soli-moving hydraulic cylinder 830 is disposed in a posture substantially parallel to the main frame 9R in order to reduce power loss during cylinder operation.

  Further, a substantially rectangular turning arm 840 is attached to the front of the hydraulic cylinder 830 for moving the soiler so as to be rotatable with respect to the right main frame 9R at a substantially central portion in the longitudinal direction.

  One end 840 a of the rotating arm 840 is rotatably connected to the tip of the piston rod 831 of the hydraulic cylinder 830 for moving the soiler, and the other end 840 b of the rotating arm 840 is the upper side of the soy 800. The length adjusting rod 850 is connected to any one of a plurality of connecting holes 802 provided on the rear end side of the portion so as to be rotatable.

  As a result, the operator operates an ON / OFF switch (not shown) provided on the steering handle 5 to turn ON / OFF the hydraulic cylinder 830 for moving the soiler, and the piston rod 831 of the hydraulic cylinder 830 for moving the soiler is moved. By extending or contracting, the soyler 800 can be slid in the front-rear direction along the long hole 811 of the soyle stay 810 via the rotating arm 840.

  That is, the position of the soyler 800 (the position in the front-rear direction and the position in the depth direction of the ridge) is adjusted by sliding the soyer 800 within a predetermined range in front of the long hole 811 when the radish is pulled out. (See FIGS. 1 and 4).

  Further, by moving the soyler 800 rearward from the predetermined range of the long hole 811 of the soyle stay 810, it can be retracted to the non-working position so as not to contact the ground during non-working (in FIG. 1). (See Soira 800 indicated by a two-dot chain line).

  That is, during the pulling operation, the blade 800 is located near the front end portion of the pulling and conveying apparatus 200 in a side view as shown by a solid line in FIGS. 1 and 4 (see FIG. 1). In view, it is located in the vicinity of the inside of the right vertical pulling device 110R. In addition, when not in operation, the soyler 800 is lifted and retracted below the shoulder alignment device 300 in a side view as shown by a two-dot chain line in FIG.

  Further, by appropriately adjusting the length of the length adjustment rod 850 whose length can be changed, the slide movement amount of the soyler 800 can be easily adjusted.

  Moreover, the position of the soiler 800 can be further changed by changing the attachment position of the length adjusting rod 850 with respect to the plurality of connecting holes 802 provided on the rear end side of the upper side portion of the soyler 800.

  When the soiler 800 is not used, it can be used as a movable balance weight by mounting the soyler 800 upside down and attached to the soystay 810.

  Further, it is possible to adopt a configuration in which the piston rod 831 of the hydraulic cylinder 830 for moving the soy is automatically reciprocated within a predetermined range during the radish pulling operation traveling. With this configuration, the front end side of the soyler 800 is reciprocated in the vertical and vertical directions in the basket, so that the soil on one side of the radish W is loosened in the vertical and front and rear directions and extends to the side of the radish W. The side roots can be cut even more effectively, and the radish W can be easily pulled out by the pulling and conveying apparatus 200.

  Further, in the present embodiment, as described above, the engine is mounted on one side, that is, the right side of the conveyance path of the pull-out conveyance device 200 of the soy 800, so that the engine is compared with the case where the soiler is mounted on both the left and right sides. 4 can be lightened.

  Further, since the soyler 800 is mounted only on the right side, the advancing direction of the fuselage is shifted in the direction in which the soyler 800 is mounted, that is, in the right direction. An operation to disengage the side clutch is required.

  However, in the present embodiment, as shown in FIG. 10B, the inclined surface 801 of the single blade of the soiler 800 is substantially parallel to the center line CL of the fuselage in plan view and the inclined surface 801 of the soiler 800. Is arranged so that the extension line of the opposite surface 803 located on the opposite side intersects the center line CL of the aircraft in front, so that the traveling direction of the aircraft is opposite to the position where the soyler 800 is installed, that is, Since the force to shift in the left direction acts, the aircraft can go straight, offset by the force to shift in the right direction described above. As a result, the operation of disengaging the side clutch can be reduced.

  In the above example, the case where the soyler 800 is arranged as shown in FIG. 10B has been described. However, the present invention is not limited to this. For example, the soyler 800 may be arranged as shown in FIG. .

  That is, in the soiler 800 shown in FIG. 10 (c), the extension line of the inclined surface 801 of the single blade intersects the center line CL of the airframe in the plan view, and the opposite surface 803 of the soiler 800 is You may arrange | position so that it may become substantially parallel to the centerline CL. Even in this case, since the extension line of the inclined surface 801 of the single blade of the soiler 800 is arranged so as to intersect the center line CL of the airframe in the front in a plan view, a force to shift to the left acts. The aircraft can go straight, offset by the force to shift to the right as described above.

  Further, in the present embodiment, since the configuration is such that the soyler 800 is attached only to the side where the gauge wheel 2 is provided, the gauge wheel 2 reduces a shift in the right direction of the traveling direction, so that the aircraft travels straight ahead. Is possible.

  Moreover, although the structure which generate | occur | produces the force which cancels with the force which shifts to the right direction of an airframe by devising arrangement | positioning of the soira 800 was demonstrated, it is not restricted to this, For example, only the side in which the gauge ring | wheel 2 was provided It is good also as a structure which can mount | wear with the soyler 800, and can fix the gauge ring | wheel 2 toward a some inner side from the advancing direction by planar view. Even in this configuration, the traveling direction can be corrected by the inclination of the gauge wheel 2, and straight traveling can be realized.

In the above embodiment, the conveyance speed component in the horizontal direction of the pulling and conveying apparatus 200 and the shoulder aligning apparatus 300 is set to be approximately the same as the traveling speed of the aircraft (for example, 0.18 m / sec). However, the present invention is not limited to this, and for example, the working angle θ ₂ (see FIG. 6) of the drawing / conveying device 200 is set such that the horizontal conveying speed component Vh of the drawing / conveying device 200 is slightly higher than the traveling speed Vs of the airframe. You may set it like this. For example, setting the working angle θ ₂ = 28 ° is an example so that Vh is about 1.3 times Vs. Here, when the working angle θ ₂ = 0 °, the horizontal conveyance speed component Vh of the drawing conveyance apparatus 200 is assumed to coincide with the traveling speed Vs of the machine body.

  Thereby, it is possible to prevent the radish W from being pushed down or folded and to prevent the radish W from being failed to be pulled out.

  Moreover, although the said embodiment demonstrated the case where the radish drawing machine 1 was provided with the shoulder aligner 300, it is not restricted to this, For example, the structure which is not provided with the shoulder aligner 300 may be sufficient.

  Moreover, in the said embodiment, although the case where the radish drawing machine 1 was provided with the 2nd cutting device (body | cutting_body cutting device) was demonstrated, not only this but a 2nd cutting device (body | body cutting device) is provided. It may be a configuration that is not.

  Further, in the above-described embodiment, a case has been described in which each of the pair of left and right drawing conveyance device covers 202L and 202R has the conveyance belt cover overhang portions 202LL and 202RR that protect the outer peripheral portion of the drawing conveyance device 200. . In this case, as shown in FIG. 11, the height direction positions of the lower end sides 202LLa and 202RRa of the pair of left and right conveying belt cover overhang portions 202LL and 202RR are a pair of left and right shoulder alignment devices 300 described above. The shoulder alignment belts 310L and 310R may be configured to substantially coincide with the height direction positions of the lower surfaces 310La and 310Ra (see FIG. 8B).

  Here, FIG. 11 shows the positions in the height direction of the lower end sides 202LLa and 202RRa of the pair of left and right conveying belt cover overhang portions 202LL and 202RR, and the lower surfaces 310La and 310Ra of the pair of left and right shoulder alignment belts 310L and 310R. It is a principal part enlarged side view of the radish drawing machine 1 for showing the relationship with the position of a height direction.

  The shoulder aligning device 300 is disposed below the pulling and conveying device 200, and the lower surfaces 310La and 310Ra at the front end portions of the pair of left and right shoulder aligning belts 310L and 310R are located at places where it is difficult for the operator to visually recognize the shoulder aligning device 300. Yes. Therefore, as shown in FIG. 11, the height direction positions of the lower end sides 202LLa and 202RRa of the pair of left and right conveying belt cover overhang portions 202LL and 202RR are set to the lower surfaces 310La of the pair of left and right shoulder alignment belts 310L and 310R, By adopting a configuration in which the position in the height direction of 310Ra is made to coincide with the side view, the operator causes the foliage W1 of the radish W to be raised upward by passing through the raising mechanism 100, and the radish W When the shoulder portion W2a can be seen, the height direction position of the shoulder portion W2a and one of the lower end sides 202LLa and 202RRa of the pair of left and right conveying belt cover overhang portions 202LL and 202RR that are easy to visually recognize By comparing the position in the height direction from the side, the difference Hd in the position in the height direction of both (see FIG. 11) It is long to be withdrawn by the feeding device 200 is be seen in advance.

  On the other hand, as described above, in the vicinity of the position where cutting of the foliage W1 is started by the first cutting device 400 (see FIGS. 1 and 9), the shoulder portion of the radish W is pulled by the pulling and conveying device 200 and the shoulder aligning device 300. The position in the height direction of W2a needs to be aligned.

  In order to satisfy this requirement, what value should be set to the above-described height difference Hd between both the heights is known in advance as a value inherent to the radish drawing machine 1.

  Therefore, in order to set the above-described difference Hd between the positions in the height direction to a desired value that is known in advance (for example, 15 cm), the operator turns the turning handle 10a to turn the gauge wheel 2. The height of (see FIG. 1) is adjusted, or the chain case turning handles 11L, 11R are turned, and the pair of left and right rear wheels 3L, 3R are rotated in the direction of the arrow U with the output shaft 6a as the turning center (FIG. 1). The height and posture of the fuselage can be corrected by rotating each individually (see Fig. 1).

  Further, in the above embodiment, as shown in FIG. 11, the positions in the height direction of the lower end sides 202LLa and 202RRa of the pair of left and right conveying belt cover overhang portions 202LL and 202RR are set to the pair of left and right shoulder alignment belts 310L and 310R. The configuration in which the lower surfaces 310La and 310Ra of each of the lower surfaces 310La and 310Ra are aligned in the height direction is described in a side view. However, the present invention is not limited to this, and for example, the pair of left and right conveying belt cover overhang portions 202LL and 202RR shown in FIG. However, as shown in FIG. 12, it is good also as a structure which has the protrusion parts 202LLb and 202RRb protruded further downward from each lower end side 202LLa and 202RRa. FIG. 12 is a side view for explaining an example different from the example shown in FIG. 11, and shows the essential features of the radish drawing machine 1 showing a pair of left and right conveying belt cover overhanging portions 202LL and 202RR having protruding portions 202LLb and 202RRb. FIG.

  In the case of the configuration shown in FIG. 12, the positions in the height direction of the protruding lower end sides 202LLb1 and 202RRb1 of the pair of left and right protruding portions 202LLb and 202RRb are the positions of the lower surfaces 310La and 310Ra of the pair of left and right shoulder alignment belts 310L and 310R, respectively. The difference Hs from the position in the height direction is set so as to be the above-described desired value (for example, 15 cm) described above in a side view.

  Therefore, when the shoulder W2a of the radish W can be seen after passing through the raising mechanism 100, the height of the shoulder W2a is the lower end side 202LLb1 of each of the pair of left and right protrusions 202LLb and 202RRb. , 202RRb1 to coincide with the position in the height direction, the operator rotates the rotating handle 10a to adjust the height of the gauge wheel 2 (see FIG. 1) or rotate the chain case. By rotating the handles 11L and 11R and individually rotating the pair of left and right rear wheels 3L and 3R around the output shaft 6a in the direction of the arrow U (see FIG. 1), the height and posture of the aircraft Can be corrected.

  Thereby, since the position of the shoulder W2a of the radish W is aligned by the shoulder aligner 300, the foliage W1 of the radish W can be cut at a desired position by the first cutting device 400, and the second cutting is performed. The apparatus 500 can reliably cut the upper end W2b of the main body W2 of the radish W at a desired position, and the cut surface is finished neatly.

  Moreover, in the said embodiment, the 2nd cutting device (torso cutting device) 500 is arrange | positioned under the shoulder aligner 300, and the operator is operating the 2nd cutting device 500, operating the radish drawing machine 1. FIG. However, the present invention is not limited to this. For example, a mirror is disposed below the engine 4 and the reflecting surface of the mirror is disposed obliquely upward and forward. It is good also as a structure which can visually recognize the cutting part of the 2nd cutting device 500, operating the drawing machine 1. FIG.

  Moreover, in the radish drawing machine 1 of the said embodiment, it is good also as a structure which provided the work lamp below the 2nd cutting device (torso cutting device) 500 provided below the shoulder aligner 300. FIG. Thereby, it becomes easy to confirm the process until the radish is pulled out and the upper end W2b of the main body W2 of the radish W is cut.

  Moreover, although the said embodiment demonstrated the case where the raising mechanism 100 was equipped with a pair of left and right vertical raising devices 110L and 110R and a pair of left and right horizontal raising devices 130L and 130R, For example, if a pair of left and right connecting arms each having one end connected to the raising mechanism and each other end rotatably connected to the main body side are provided, the vertical raising device is on the left side (or right side). 1), and one laterally raising device is arranged on the right side (or left side) of the rear surface.

  In the above-described embodiment, in the pulling and conveying apparatus 200, the left pulling driven pulley 230L and the left pinching roller group 240L are rotatably attached to the left pinching force adjustment frame 280L and the right pulling follower. The pulley 230R and the right clamping roller group 240R are provided with a right clamping force adjustment frame 280R that is rotatably attached. Both of the pair of left and right clamping force adjustment frames 280L and 280R are provided in the horizontal direction (FIG. However, the present invention is not limited to this. For example, one of the pair of left and right clamping force adjustment frames 280L and 280R is adjusted in the left-right direction. The other frame may be configured such that the position of the other frame cannot be adjusted. Even in this case, the width on the entrance side of the conveyance path of the pulling and conveying apparatus 200 (see symbol G in FIG. 7) can be easily adjusted, so that the same effect as in the case of the above configuration is exhibited.

  In the above embodiment, the pair of left and right shoulder driven pulleys 330L and 330R, the pair of left and right shoulder aligned first rollers 340L and 340R, and the pair of left and right shoulder aligned second rollers 350L and 350R are independently Although the case where the position is adjustable in the direction (see arrow H in FIG. 9) has been described, the present invention is not limited to this. For example, the left shoulder alignment driven pulley 330L, the shoulder alignment first roller 340L, The two rollers 350L can be adjusted in the left-right direction as a unit, and the right shoulder-aligned driven pulley 330R, the first shoulder-aligned roller 340R, and the second shoulder-aligned roller 350R are integrated in the left-right direction. You may be comprised so that position adjustment is possible.

  In the above embodiment, the pair of left and right shoulder-aligned driven pulleys 330L and 330R, the pair of left and right shoulder-aligned first rollers 340L and 340R, and the pair of left and right shoulder-aligned second rollers 350L and 350R are provided in the left-right direction (see FIG. 9), the position adjustment is possible. However, the present invention is not limited to this. For example, the left or right shoulder-driven pulley, the first shoulder-aligned roller, and the second shoulder-aligned roller However, only the position adjustment in the left-right direction may be possible. Even in this case, the width on the entrance side of the conveyance path of the shoulder aligning device 300 (see reference numeral J1 in FIG. 9) can be easily adjusted, so that the same effect as in the case of the above configuration is exhibited.

  Moreover, although the 1st cutting device 400 demonstrated the structure provided with the single foliage rotary blade 410 in the said embodiment, not only this but the structure provided with a pair of left and right rotary blades, for example good.

  Moreover, although the 1st cutting device 400 demonstrated the structure provided with the single foliage rotary blade 410 in the said embodiment, not only this but the structure provided with the fixed blade may be sufficient, for example. In this case, the fixed blade is disposed so that the blade portion inclines and crosses the conveying path of the shoulder aligning device 300 in a plan view, and the portion of the blade that crosses the conveying path of the shoulder aligning device 300. Is located in front of the pair of left and right barrel cutting blades 510L and 510R (see FIG. 9) in plan view. With this configuration, the structure can be simplified.

  Further, in the case of a configuration using a fixed blade instead of the foliage rotary blade 410, a larger number of holes than the number used when actually fixing are provided at equal intervals as the fixing holes provided in the fixed blade. It may be a configuration. With this configuration, the fixing position of the fixed blade can be changed by appropriately shifting the hole actually used among the plurality of fixed holes, and the sharpness of the fixed blade can be maintained for a long time.

  In the above embodiment, the radish W has been described as an example of the crop of the present invention. However, the present invention is not limited thereto. For example, even if the crop to be extracted is a root vegetable such as carrot, The same effect is demonstrated.

  Further, the height of the transmission shaft 6b protruding forward from the transmission case 6 (see FIG. 1) described in the above embodiment is lowered, so that the pulling / conveying device is inclined. Compared to the case of the above embodiment, it can be made milder. With this configuration, the leaf removal position at the rear end of the pulling and conveying device from which the cut foliage is discharged can be made lower than in the case of the above embodiment, so that the foliage is not easily blown away by wind or the like. I can do it.

  In the above embodiment, the pair of left and right shoulder alignment driving pulleys 320L and 320R, the pair of left and right shoulder alignment first rollers 340L and 340R, and the pair of left and right shoulder alignment second rollers 350L and 350R of the shoulder alignment device 300 are as follows: A substantially V-shaped groove corresponding to a rib-like protrusion protruding from the inner peripheral surface of the shoulder alignment belt is formed at each outer peripheral end, and the outer diameter of the upper surface and the outer diameter of the lower surface are the same. Although the configuration has been described, the present invention is not limited thereto. For example, in order to make the outer diameter of each upper surface slightly larger than the outer diameter of the lower surface, a configuration in which a flange portion is provided on the outer peripheral portion of the upper surface may be employed. This collar can prevent the shoulder alignment belts 310L and 310R from derailing upward. Moreover, it is good also as a structure which provided the convex part over the perimeter of the outer periphery edge part of the said collar part provided in the outer peripheral part of the upper surface of a pair of left-right shoulder drive pulley 320L, 320R. With this configuration, in the shoulder aligning belts 310L and 310R of the shoulder aligning device 300, even if the belt interval is widened, the decrease in frictional force can be compensated for and the conveying force can be maintained. .

  In addition to the above-described buttocks, a pair of left and right shoulder alignment driving pulleys 320L and 320R, a pair of left and right shoulder alignment first rollers 340L and 340R, and a pair of left and right shoulder alignment second rollers 350L and 350R. A plate-like belt detachment preventing member having a diameter larger than the diameter of the collar portion may be provided in the vicinity of the upper surface of each of the above. With this configuration, the belt detachment preventing member projects outward from the collar portion in a plan view, so that it can be easily returned even if the belt is about to come off.

  Further, the vicinity of the outer peripheral surface of the pair of left and right shoulder alignment belts 310L and 310R surrounding the outer periphery of the pair of left and right shoulder alignment driving pulleys 320L and 320R, and the vicinity of the pair of left and right body cutting rotary blades 510L and 510R positioned below the outer peripheral surface Alternatively, a scraper may be arranged. With this configuration, it is possible to prevent the cut ends of the foliage and the radish W from being left on the upper surfaces of the body cutting rotary blades 510L and 510R, and to prevent the shoulder alignment belts 310L and 310R from turning up. .

  According to the crop drawing machine of the present invention, there is an effect that it is possible to provide a crop drawing machine capable of performing the raising work more stably, and it is useful as a radish drawing machine or the like.

DESCRIPTION OF SYMBOLS 1 Radish drawing machine 2 Gauge wheel 4 Engine 5 Steering handle 100 Pulling mechanism 160 Pulling mechanism position adjustment device 161L Left parallel link arm 161R Right parallel link arm 170 Rotation operation part 200 Pulling conveyance device 300 Shoulder alignment device 400 1 cutting device (stem and leaf cutting device)
500 Second cutting device (body cutting device)

Claims (8)

A raising mechanism (100) for causing a leaf (W1) of a crop (W) in a field;
A pulling and conveying apparatus (200) for pulling out the crop (W) from the field by holding the leaf portion caused by the pulling mechanism (100) and conveying the leaf diagonally upward;
A raising mechanism position adjusting device (160) for adjusting the vertical position of the raising mechanism (100),
The raising mechanism position adjusting device (160) includes:
A pair of left and right connecting arms (161L, 161R) each having one end (161La, 161Ra) connected to the pulling mechanism (100) and the other end (161Lb, 161Rb) rotatably connected to the main body side. When,
A rotation operation unit (170) for rotating the pulling mechanism (100) in the vertical direction about the rotation fulcrum (162L, 162R) on the main body side via the pair of left and right connecting arms (161L, 161R). And a crop pulling machine characterized by comprising: The raising mechanism (100)
A pair of left and right first pulling devices (110L, 110R) for causing the leaves (W1) of the crop;
A pair of left and right second pulling devices (130L, 130R) that are arranged on the rear side of the pair of left and right first pulling devices (110L, 110R) and cause the leaf portion (W1) of the crop,
The one ends (161La, 161Ra) of the pair of left and right connecting arms (161L, 161R) are connected to the back surfaces of the pair of left and right second pulling devices (130L, 130R), respectively. The crop drawing machine according to claim 1. The pulling and conveying apparatus (200)
A pair of left and right pulling and conveying belt units (210L, 220L, 230L, 210R, 220R, 230R) for holding and conveying the leaf portion;
A pair of left and right belt unit support frames (270L, 270R) that rotatably support the pair of left and right pull-out conveyance belt units (210L, 220L, 230L, 210R, 220R, 230R);
The other ends (161Lb, 161Rb) of the pair of left and right connecting arms (161L, 161R) are connected to the upper surfaces of the pair of left and right belt unit support frames (270L, 270R), respectively. It is attached to the attachment members (203L, 203R) so as to be rotatable,
The crop puller according to claim 2, wherein the rotation operation unit (170) is connected to one of the pair of left and right connection arms (161L, 161R) and the one connection arm (161L, 161R). The pair of left and right first pulling devices (110L, 110R)
A pair of endless left and right pairs in which a plurality of first protrusions (112a) projecting from the outer peripheral surface are formed, and one end surface of both end surfaces connecting the outer peripheral surface and the inner peripheral surface is arranged to face each other. A first raising belt (112, 112) of
A pair of left and right first pulling pulley units (111a, 111b, 111a, 111b) around which the pair of left and right first pulling belts (112, 112) are respectively looped,
The left and right pair of second raising devices (130L, 130R)
A pair of endless left and right second pull-up belts (132, 132) in which a plurality of second protrusions (132a) protruding from the outer peripheral surface are formed, and the outer peripheral surfaces are arranged to face each other;
A pair of left and right second pulling pulley units (131a, 131b, 131a, 131b) around which the pair of left and right second pulling belts (132, 132) are respectively looped;
The pair of left and right first pull-up belts (112, 112) have a pair of left and right pulley rotation shafts (153, 112) of the pair of left and right second pull-up pulley units (131a, 131b, 131a, 131b) in plan view. 155) within the range between the axes,
The length of the first protrusion (112a) of the first pull-up belt (112, 112) is shorter than the length of the second protrusion (132a) of the second pull-up belt (132, 132). The crop drawing machine according to claim 2 or 3, characterized in that The pitch (P ₁ ) of the plurality of first protrusions (112a), the peripheral speed (V1) of the first pull-up belt (112, 112), and the traveling speed (Vs) during the crop pulling work travel are: The first protrusion (112a) is adjusted so as to come into contact with the leaves of the crop (W) planted between predetermined strains at least once while traveling between the strains. The crop drawing machine according to claim 4, wherein:   The value of the conveying speed component in the direction parallel to the field surface when the pulling and conveying apparatus (200) conveys the leaf portion obliquely upward is larger than the value of the traveling speed during the crop extraction work traveling. The crop drawing machine according to any one of claims 1 to 5, wherein: A pulling height adjusting mechanism (2,) for adjusting the height of the front end portion of the pulling and conveying apparatus (200) from the surface of the field, which starts to hold the raised leaf portion by the pulling mechanism (100). 2a, 10)
The pulling height adjusting mechanism (2, 2a, 10)
A grounding wheel (2) that is rotatably arranged on either the left or right side;
A support stay (2a) for rotatably supporting the ground ring (2);
A height adjusting device (10) for adjusting the height of the support stay (2a),
The internal pressure of the grounding ring (2) is the whole or part of the force in the direction opposite to the pulling direction that the pulling / conveying device (200) receives from the crop when the crop is pulled out by the pulling / conveying device (200). The crop puller according to any one of claims 1 to 6, wherein the grounding wheel (2) is adjusted so as to be absorbable by deformation. An internal pressure detection sensor for detecting the internal pressure of the ground ring,
Control that outputs a control command for increasing the height of the support stay (2a) to the height adjusting device (10) when it is determined that the internal pressure detected by the internal pressure detection sensor is equal to or greater than a predetermined value. The crop drawing machine according to claim 7, further comprising: a section.