JP6717359B2 - Work vehicle - Google Patents

Description

The present invention relates to a crop pulling machine for pulling out crops such as root vegetables.

BACKGROUND ART Conventionally, a root vegetable harvester for extracting root vegetables such as radish from the field is known (for example, see Patent Document 1).

The root vegetable harvester described in the prior patent document 1 raises the foliage portions of crops (root vegetables) exposed in the field by a raising device and collects them in the central portion of the machine body, and sandwiches the foliage portions with a pulling/conveying device to cultivate the field. The crop is returned from the field to the field by cutting the foliage portion at a predetermined height with a foliage cutting device during transportation.

The left side surface of this raising device is fixed to the tip of one rotating arm that is rotatably attached to the left body frame, and raises it according to the type of crop and the growth of the foliage. The configuration is such that the vertical position of the device can be changed.

Japanese Unexamined Patent Publication No. 2015-62371

However, since the raising device of the above-mentioned conventional root vegetable harvester is connected to the machine body frame by one rotating arm on the left side surface, if it vibrates greatly during the crop extracting work, the raising and lowering position of the raising device is increased. Is not stable, and it is not possible to reliably guide the foliage to the pulling and conveying device side without dropping it, and there are cases where crop pulling out fails.

An object of the present invention is to provide a crop pulling machine capable of performing the raising work more stably in consideration of such conventional problems.

In order to achieve the above object, the invention of claim 1 provides a raising mechanism (100) for causing a leaf portion (W1) of a crop (W) and a leaf portion (W1) caused by the raising mechanism (100). ) For pulling out the crop (W) from the field in a crop pulling machine (200), the field of the front end part of the pulling and carrying apparatus (200) starting to hold the raised leaves (W1). A pull-out height adjusting mechanism (2, 2a, 10) for adjusting the height from the surface is provided, and the pull-out height adjusting mechanism (2, 2a, 10) is a grounding wheel rotatably arranged in the left-right direction. (2), a support stay (2a) that rotatably supports the grounding wheel (2), and a height adjusting device (10) that adjusts the height of the support stay (2a). An internal pressure detection sensor for detecting the internal pressure of the wheel (2) is provided. When the internal pressure detection sensor detects an internal pressure of a predetermined value or more, the height adjusting device (10) raises the height of the support stay (2a). It is a crop extractor having a control unit for outputting a control command .

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According to the present invention can prevent the drawing operations remain withdrawal conveyor device (200) is moved downward by the reaction force when removing the crop is continued, it can be pulled reliably crops ..

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The left side view which shows the whole radish pulling machine in embodiment of this invention Plan view of the radish extractor shown in FIG. 1 (No. 1) Plan view of the radish extractor shown in FIG. 1 (Part 2) Front view of the radish extractor shown in FIG. A schematic side view of the front side of the machine body for explaining the raising mechanism position adjusting device in the radish pulling machine of the present embodiment Schematic side view showing a state in which the raising mechanism in the radish pulling machine of the present embodiment is raised Schematic plan view of the main part of the pulling and conveying apparatus according to the present embodiment (A): It is the schematic for demonstrating the two-stage type roller member of the four holding rollers which comprise a pair of right and left holding rollers in this Embodiment, and is an EE cross-section arrow in FIG. FIG. 8B is a schematic view for explaining the one-stage type roller member of the four nipping rollers forming the pair of left and right nipping rollers, and is a cross-sectional view taken along line FF in FIG. 7. Schematic plan view of the main part of the shoulder alignment device in the present embodiment (A): Partial schematic left side view of the machine for explaining the soila provided in the radish pulling machine of the present embodiment, (b): MM cross sectional arrow view of the soila shown in FIG. 10( a ). , (C): a cross-sectional arrow view in a cross-section similar to that of FIG. 10(b), showing another example of a soila having a single-edged inclined surface that is different in orientation from that shown in FIG. 10(a). Enlargement of the essential parts of the radish extractor to show the relationship between the height direction positions of the lower ends of the pair of left and right conveyor belt cover overhangs and the height positions of the lower surfaces of the left and right pair of shoulder alignment belts. Side view FIG. 12 is a side view for explaining another example different from the example shown in FIG. 11, and is an enlarged side view of a main part of the radish pulling machine showing a pair of left and right conveyor belt cover protrusions having protrusions.

Hereinafter, a radish extractor as an example of the crop extractor of the present invention will be described with reference to the drawings.

FIG. 1 is a left side view of the radish pulling machine 1 of the present embodiment, and FIG. 2 is a plan view (No. 1) of the radish pulling machine 1 shown in FIG.

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

2 shows an internal structure of a pulling/conveying device 200, a shoulder aligning device 300, etc., which will be described later, and FIG. 3 shows a state in which the pulling/conveying device 200 is covered by a pair of left and right pulling/conveying device covers 202L and 202R.

Further, in FIG. 4, the drawing and conveying device 200, the engine 4, and the like are omitted.

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

An upper end portion of the support stay 2 a that rotatably supports the gauge wheel 2 is connected to the support stay moving mechanism 10. The support stay moving mechanism 10 has one end connected to the support stay 2a and the other end connected to the front end portion of the rotating handle 10a for rotating the support stay moving mechanism 10 via a bevel gear. Is held so that it can slide up and down. The outer wall portion of the support stay moving mechanism 10 is fixed to the machine body side.

The adjusting rod is composed of a first rod on one end side connected to the support stay 2a and a second rod on the other end side connected to the turning 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 thereof, and the second rod is inserted into the hole portion of the first rod. A male screw that fits with the female screw of is formed.

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

Further, the gauge wheel 2 is configured to run in the groove portion of the ridge in the field. The tire air pressure of the gauge wheel 2 will be described later.

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

The gauge wheel 2 of the present embodiment corresponds to an example of the grounding wheel of the present invention, and the support stay 2a of the present embodiment corresponds to an example of the support stay of the present invention. Further, the support stay moving mechanism 10 of the present embodiment corresponds to 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 mission case 6 and the output shaft 6a protruding in the left and right direction of the mission case 6, and the pair of left and right chain cases 7L and 7R is transmitted. Drive the rear wheels 3L, 3R.

The pair of left and right chain cases 7L and 7R are rotated in the arrow U direction (FIG. 1) with the output shaft 6a protruding in the left and right directions as the center of rotation when the operator rotates the chain case rotation handles 11L and 11R. (Refer to FIG. 3), each of them is individually rotatable.

As a result, the vehicle height on the rear wheel side of the radish extractor 1 can be adjusted independently on the left and right sides.

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, 3R are also mountable on either the left or right side of the pair of left and right chain cases 7L, 7R.

By making the wheel spacing changeable, radish extraction work can be performed even in the case of ridges with different numbers of planting rows, such as two-row planting and three-row planting.

Further, the radish pulling machine 1 of the present embodiment, as shown in FIGS. 1 to 4, (1) a raising mechanism 100 that causes the foliage portion W1 of the radish W that has spread to the field Y, and (2) a raising mechanism. A pulling and conveying device 200 for pulling the radish W substantially vertically from the field Y by conveying the radish W diagonally upward and rearward in synchronism with the traveling speed of the machine body while sandwiching the foliage W1 of the radish W caused by the mechanism 100. (3) The side surface of the shoulder W2a at the upper end of the main body W2 of the radish W, which is horizontally arranged below the pulling and carrying device 200 and takes over the foliage portion W1 of the radish W that is carried by the pulling and carrying device 200. The shoulder aligning device 300 that aligns the positions in the vertical direction in the visual direction and conveys the rearward while keeping the lower part of the foliage portion W1 substantially in synchronization with the traveling speed of the machine body; The foliage portion W1 of the radish W whose positions are aligned is cut at a desired position between the position clamped by the pulling and conveying device 200 and the position clamped by the shoulder aligning device 300. A first cutting device having a foliage rotary blade 410 and a cutting guide bar 420 for guiding the foliage W1 toward the rotary blade 410 in order to prevent the foliage W1 from being pushed by the rotary blade 410 and escaping. Cutting device) 400 and (5) the first cutting device 400 cuts the foliage portion W1 and then the shoulder aligning device 300 conveys the radish W that is conveyed backward while the remaining part of the foliage portion W1 is being held. A second cutting device (trunk cutting device) 500 having a pair of left and right disk-shaped barrel cutting rotary blades 510L and 510R for cutting the upper end W2b of the main body W2.

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

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

The front ends of the left and right transmission cases 8L and 8R are respectively fixed to a pair of left and right main frames 9L and 9R that form a skeleton portion of the body and have a substantially inverted V shape in a side view. It is supported by a pair of left and right transmission case support stays 9La and 9Ra.

Further, the front end portions of the pair of left and right pullout transport frames 270L, 270R of the pullout transport device 200 are fixed to the front end portions of the pair of left and right main frames 9L, 9R, respectively. 1), the pulling/conveying device 200 is supported and fixed from below so as to be inclined rearward and obliquely upward at a predetermined working angle θ (see FIG. 6) in a side view. Also, the rear end portions of the pair of left and right pulling/conveying frames 270L, 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 done.

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

With the above configuration, the radish pulling machine 1 of the present embodiment holds the foliage W1 of the radish W by the pulling and conveying device 200 while moving forward and raising the foliage W1 of the radish W by the raising mechanism 100. By pulling the radish W from the field Y and cutting the upper part of the foliage W1 with the first cutting device 400, and further cutting the upper end W2b of the main body W2 of the radish W with the second cutting device 500, This is a configuration in which the radish W is returned to the original hole of the field Y.

As a result, the worker can pull out the radish W from the field Y with a light force, and does not have 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 is reduced.

Next, the raising mechanism 100 described above will be further described with reference to FIGS. 1 to 4.

The raising mechanism 100 includes (1) a pair of left and right vertical parts that mainly cause the foliage portion W1 extending in the left-right width direction of the machine body to be upward among the foliage portion W1 of the radish W that extends and extends on the ridge surface of the field Y. (2) The raising devices 110L and 110R and (2) the right and left vertical raising devices 110L and 110R are disposed behind the vertical raising devices 110L and 110R. A pair of left and right lateral raising devices 130L and 130R that cause the foliage portion W1 extending in the front-rear direction to rise upward, and (3) a pair of left and right vertical raising devices 110L and 110R, and a pair of left and right lateral raising devices 130L. , 130R, and a raising device driving mechanism 150 for transmitting the driving force.

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

Each of the pair of left and right lateral pulling devices 130L and 130R is composed of 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 lateral pulling belt 132 having a plurality of elongated horizontal pulling protrusions 132a formed on the outer peripheral surface thereof.

Further, as shown in FIG. 3, the raising device drive mechanism 150 includes a raising drive chain transmission unit 151 to which the driving force from the engine 4 is input via the transmission shaft 6b, and a drive from the drive chain transmission unit 151. The universal joint portion 152 for transmitting the force to the left side pull-up drive pulley 131a, the left side pull-up drive pulley 131a at the rear end portion are inserted and fixed, and the first bevel gear 153a is inserted and fixed at the front end portion. , A first transmission shaft 153 for transmitting a driving force to the left pulling up drive pulley 111a via a first bevel gear 153a, and second bevel gears 154a at both ends thereof are inserted and lowered, and a pair of left and right is provided near the inside thereof. The second transmission shaft 154 in which the vertical pull-up drive pulleys 111a and 111a are inserted and fixed, and the third bevel gear 155a in the front end portion are inserted and fixed, and the right side horizontal pull-up drive pulley 131a is inserted and fixed in the rear end portion. And a third transmission shaft 155.

Further, as shown in FIG. 3, the pull-up drive chain transmission portion 151 receives the rotation driving force transmitted to the left side out of the rotation driving force 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 the rotational driving force to the device 100 side, a raising transmission chain 151c wound around the raising input sprocket 151a and the raising output sprocket 151b, A raising transmission chain case 151d for storing these is provided.

Further, the first transmission shaft 153, the second transmission shaft 154, and the third transmission shaft 155 are covered by the cylindrical first pipe member 153b, second pipe member 154b, and third pipe member 155b, respectively. The first pipe member 153b also has a function as a fixing member that connects and fixes the left lateral pulling-up device 130L and the left vertical pulling-up device 110L with a fastening member, and the second pipe member 154b. Has a function of 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 that connects and fixes the lateral pulling device 130R with a fastening member (see FIGS. 2 and 3).

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

As a result, the pair of left and right vertical raising belts 112 rotate clockwise in the left side view (see arrow P in FIG. 1), and the pair of left and right lateral raising belts 132 move in the directions of arrows Q1 and Q2 (see FIG. 4)).

In addition, the pair of left and right vertical raising devices 110L and 110R each effectively exert the raising function of the foliage portion W1 by the vertical ridge protrusion 112a, and the foliage portion W1 to the rotating portion such as a belt and a pulley. In order to prevent entanglement, both sides are covered with the outer cover 113a and the inner cover 113b so that only the vertically pulled-up protrusions 112a protruding downward and forward are completely exposed to the outside.

Further, the pair of left and right lateral raising devices 130L and 130R are respectively covered by the front cover 133a and the rear cover 133b in order to prevent the foliage portion W1 from being caught in the rotating parts such as the belt and the pulley. ing.

Further, the rear end portion of the inner cover 113b that covers the pair of left and right vertical raising devices 110L and 110R from the inside is a fastening member to the front cover 133a that covers the pair of left and right lateral raising devices 130L and 130R from the front side. It is connected and fixed.

Further, a raising mechanism position adjusting device that adjusts the vertical position of the raising mechanism 100 is provided on the rear side of the rear covers 133b and 133b that covers the pair of left and right lateral raising devices 130L and 130R from the rear side. The front end portions 161La and 161Ra of the pair of left and right parallel link arms 161L and 161R included in 160 are connected and fixed by fastening members (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 pulling machine 1 of the present embodiment, and is a view showing a state where the raising mechanism 100 is most lowered.

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

As shown in FIGS. 3 and 5, the raising mechanism position adjusting device 160 includes (1) a pair of left and right parallel link arms 161L and 161R, and (2) a raising mechanism 100 including a pair of left and right parallel link arms 161L and 161L. A rotation operation unit that vertically rotates through a pair of left and right rotation fulcrums 162L and 162R provided on the front end sides of the pair of left and right substantially inverted U-shaped pipe members 203L and 203R via the 161R. 170 and. 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 have a pair of left and right sides of a pulling and conveying device 200 described later. It is fixed to the upper surface side of the pull-out conveyance frames 270L and 270R (see FIGS. 1, 3, and 5).

That is, as described above, the front end portions 161La and 161Ra of the pair of left and right parallel link arms 161L and 161R respectively cover the pair of left and right lateral pulling up 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, which are fixedly connected to the rear surface side, respectively, of the pair of left and right substantially inverted U-shaped pipe members 203L and 203R. It is rotatably connected to rotation fulcrums 162L and 162R provided on the respective front end sides.

Further, the turning operation portion 170 is (1) a plate-shaped member having a substantially triangular shape in a side view, inside the outer peripheral surface in the vicinity of the turning fulcrum 162L of the left parallel link arm 161L, and its bottom portion. Is fixed by welding, (2) a protrusion length changing device 175 configured to change the protrusion length of the front end 172a of the female screw shaft 172, and (3) a pair of left and right A cylindrical protruding length variable device support member 176, which is connected in 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 arranged in the left-right direction in a 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 thereof, and the upper end portion of the rotating arm member 171 is rotatably connected to the front end portion 172a thereof. 172 and (2) a male screw is formed on the outer peripheral surface of the front end side 173a thereof, the central portion thereof is rotatably supported by the protruding length variable device supporting member 176, and the rotary handle 174 is provided at the rear end portion 173b thereof. It has the connected male screw shaft part 173, and (4) the bellows-shaped cover member 173c which covers the front end side 173a of the male screw shaft part 173.

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

Accordingly, in the protruding length varying device 175, the male screw on the outer peripheral surface of the male screw shaft portion 173 is fitted to the female screw on the inner peripheral wall surface of the female screw shaft portion 172. The protrusion length of the front end portion 172a of the female screw shaft portion 172 is changed by moving along the axial direction according to the turning direction of the 174.

As a result, the operator rotates the rotating handle 174, for example, in the clockwise direction in the rear view, so that the front end portion 172a of the female screw shaft portion 172 has the protruding length varying device supporting member 176 in the side view. Since the front end portion 172a is moved in the direction in which the forward protrusion length is shortened (see arrow I in FIG. 5), the left parallel link arm 161L moves through the rotation arm member 171. While rotating clockwise about the left-side rotation fulcrum 162L in a left side view, a pair of left and right lateral pulling up devices 130L and 130R and a pair of left and right vertical pulling up devices 110L and 110R are integrally formed as a left and right pair. Through the parallel link arms 161L and 161R, the pair of left and right rotation fulcrums 162L and 162R are rotated clockwise in a left side view to rise (see FIG. 6).

Further, when the operator rotates the rotating handle 174 in a counterclockwise direction in a rear view, the front end 172a of the female screw shaft 172 has a protruding length varying device support member 176 in a side view. Since 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), the left parallel link arm 161L rotates. Through the arm member 171, the left rotation fulcrum 162L is rotated counterclockwise in a left side view, and a pair of left and right lateral raising devices 130L and 130R and a pair of left and right vertical raising devices 110L, 110R integrally rotates through a pair of left and right parallel link arms 161L and 161R counterclockwise in a left side view and descends about a pair of left and right rotation fulcrums 162L and 162R (see FIG. 5).

In the present embodiment, as shown in FIG. 5, when the raising mechanism 100 is most lowered, the raising mechanism 100 is in a posture that is substantially vertical to the surface of the field Y. That is, at this time, the pair of left and right lateral raising devices 130L, 130R has a raising device inclination angle θ of about 90° as an angle formed with the ridge surface Y1 of the field Y in a side view.

The raising mechanism 100 of the present embodiment is an example of the raising mechanism of the present invention. Further, the pair of left and right vertical raising devices 110L and 110R of the present embodiment are examples of the pair of left and right first raising devices of the present invention, and the pair of left and right lateral raising devices 130L and 130R of the present embodiment are , Which corresponds to an example of the 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. Further, the pair of left and right parallel link arms 161L and 161R of the present embodiment correspond to an example of the pair of left and right connecting arms of the present invention, and the turning operation unit 170 of the present embodiment is the turning operation unit of the present invention. This is an example.

With the above-described configuration, the raising mechanism 100 includes the pair of left and right parallel link arms 161L and 161R having a shorter length than the conventional single rotating arm described above, and thus the pair of left and right substantially inverted U-shaped pipe members 203L. Since the pair of left and right rotation fulcrums 162L and 162R on the right and left 203R are rotatably connected to each other, the raising and lowering mechanism 100 can stably perform the raising and lowering without a large change in the vertical position even during traveling. Can be done.

Further, since the raising operation can be performed stably, it is possible to reliably guide the foliage portion W1 to the pulling and conveying device side without dropping it, and it is possible to prevent the pulling out of the radish W from failing.

Moreover, according to the said structure, the raising height Lh (refer FIG. 6) can be adjusted appropriately according to the length of the foliage part W1, and the foliage part extended and extended to the ridge surface Y1 of the field. W1 can be surely raised and pinched by the pulling and 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 left and right pair of horizontal raising devices 130L and 130R spreads and extends on the ridge surface Y1 of the field. The height from the ridge surface Y1 of the lower field of the raising mechanism 100 that can surely raise the foliage W1. As a specific example of the lower part of the pulling-up mechanism 100, for example, the tip of the vertical pull-up protrusion 112a located at the bottom end may be used, or the tip of the horizontal pull-up protrusion 132a located at the bottom end, Alternatively, it may be a portion other than that. 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 is about 90° when the raising mechanism 100 is most lowered (see FIG. 5), and the raising mechanism 100 is raised. It is assumed that the mechanism 100 forms approximately 60° when the mechanism 100 is most raised (see FIG. 6 ).

As a result, a horizontal distance L (see FIG. 6) in a side view between the front end portion of the pulling and conveying device 200 and the front end portion of the horizontal pulling up protrusion 132a located at the lowermost end of the pair of left and right horizontal pulling up devices 130L and 130R. ) Is hard to change back and forth, and the raising action height Lh can be largely changed.

Further, even when the raising device inclination angle θ=60°, the tip of the lateral raising protrusion 132a located at the lowermost end of the pair of left and right lateral raising devices 130L and 130R and the front end portion of the pulling and conveying device 200. By configuring the horizontal distance L (see FIG. 6) in the side view to be shorter than the distance between the plants of the radish W (for example, 25 cm), slipping of the foliage can be prevented, and it is reliably delivered to the pulling and conveying device 200. You can

Further, when the raising mechanism 100 is raised, the upper end sides of the pair of left and right lateral raising devices 130L and 130R, when viewed from a side, overlap the front end portion of the pulling and conveying device 200 by the overlap distance L (see FIG. 6). By arranging so as to cover the upper part, slipping of the foliage part can be prevented, and it can be reliably delivered to the pulling and conveying device 200.

Further, as shown in FIG. 5, in a side view, from the front and rear central portions of the horizontal pull-up protrusions 132a of the pair of left and right horizontal pull-up devices 130L and 130R, the front (vertical pull-up) of the pair of left and right vertical pull-up devices 110L and 110R is shown. The horizontal distance L to the raising protrusions 112a is set to be equal to or less than the distance between the plants of the radish W (for example, 25 cm), so that the foliage portion W1 causes the pair of left and right vertical raising devices 110L and 110R to horizontally raise them. It is possible to prevent the foliage portion W1 from dropping when the foliage portion W1 is taken over by the devices 130L and 130R, and as a result, the caused foliage portion W1 can be reliably delivered to the pulling and conveying device 200.

In addition, in the present embodiment, the length L (for example, approximately 70 mm of an arrow) of the vertical pulling protrusion 112a (see FIG. 3) is made shorter than the conventional length.

As a result, a pair of left and right vertical raising devices 110L and 110R are arranged in a range between the first transmission shaft 153 and the third transmission shaft 155 in a plan view as shown in FIG. Even if there is, the width of the raising mechanism 100 in the front-rear direction can be narrowed, and the width of the radish extractor 1 in the front-rear direction can be reduced.

Further, in the present embodiment, the length L (for example, an arrow of about 110 mm) (see FIG. 3) of the lateral pull-up protrusion 132a is made longer than the conventional length.

As a result, the foliage portion W1 of the radish W during the drawing operation can be reliably taken over and guided to the drawing and conveying device 200.

Further, by adjusting the raising device tilt angle θ, the posture of the raising mechanism 100 (including the raising action height Lh and the horizontal distance L) (see FIG. 6) can be changed to an appropriate state by the rotating handle 174. Is arranged above the upper end side of the pulling and conveying apparatus 200, so that the operator visually confirms the positional relationship between the lower end portion of the pulling mechanism 100 and the foliage W1 of the radish, and The posture can be adjusted appropriately.

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

Accordingly, the rotary handle 174 is disposed at a position apart from the transport path of the pull-out transport device 200, which will be described later, on the left side in a plan view, and the rotation handle 174 can be prevented from coming into contact with the foliage during transport.

Further, in the present embodiment, the pitch P of the vertical pull-up protrusions 112a (see FIG. 6), the peripheral speed V1 of the vertical pull-up belt 112, and the traveling speed Vs during the crop pulling work traveling are the values obtained by the radish pulling machine 1. While traveling in a predetermined plant-to-plant Pk (for example, 25 cm), the vertically raised protrusion 112a is adjusted so as to come into contact with the foliage portion W1 of the radish W planted in the predetermined plant-to-plant Pk at least once. There is.

That is, the stock pitch Pk (m), the pitch P (m) of the vertically raised protrusions 112a, the peripheral velocity V1 (m/sec) of the vertically raised belt 112, and the traveling speed Vs (m/sec) during the crop pulling work traveling. Satisfies the following expression 1.

1≦Pk÷Vs×V1÷P... (Equation 1)
Here, the right side of Expression 1 represents the number of vertically raised protrusions 112a that pass through the ridge surface Y1 of the field while the radish extractor 1 travels between the plants.

The following is a description using specific numerical examples.

In the case where the inter-plant Pk=0.25 m, the traveling speed Vs=0.236 m/sec during the crop pulling work traveling, and the peripheral velocity V1=0.57 m/sec of the vertical raising belt 112, the pitch P of the vertical raising protrusions 112a. However, for example, in the device set to 0.057 m, Pk÷Vs×V1÷P≈10.59 (books/shares), and Expression 1 is satisfied.

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

Further, with respect to the expression 1, the same relationship holds for the pair of left and right lateral raising devices 130L and 130R.

That is, in the present embodiment, the pitch P (see FIG. 4) of the lateral pull-up protrusions 132a, the peripheral velocity V2 of the horizontal pull-up belt 132, and the traveling speed Vs during the crop pulling work traveling are the radish pulling machine 1. The laterally raised protrusions 132a are adjusted so as to come into contact with the foliage portion W1 of the radish W planted at the predetermined inter-plant Pk at least once while traveling the predetermined inter-plant Pk (for example, 25 cm). ..

That is, the stock pitch Pk (m), the pitch P (m) of the laterally raised protrusions 132a, the peripheral velocity V2 (m/sec) of the laterally raised belt 132, and the traveling speed Vs (m/sec) during the crop pulling work traveling. Satisfies the following Expression 2.

1≦Pk÷Vs×V2÷P ····· (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 extractor 1 travels between the plants.

The following is a description using specific numerical examples.

Pitch between plants Pk=0.25 m, running speed Vs during crop pulling work running=0.236 m/sec, and peripheral speed V2 of the lateral pulling belt 132 V2=0.57 m/sec, the pitch P of the lateral pulling protrusions 132a. However, for example, in the device set to 0.084 m, Pk÷Vs×V2÷P≈7.18 (books/shares), and the equation 2 is satisfied.

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

The front end portions 161La and 161Ra of the pair of left and right parallel link arms 161L and 161R of the present embodiment correspond to one end of each of the pair of left and right connecting 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 respectively correspond to the other ends of the pair of left and right connecting arms of the present invention.

Further, the pair of left and right vertical raising belts 112, 112 of the present embodiment is an example of the pair of left and right first raising belts of the present invention, and the pair of left and right lateral raising belts 132, 132 of the present embodiment are , Which corresponds to an example of the pair of left and right second raising belts of the present invention.

The vertical pull-up protrusion 112a of the present embodiment corresponds to an example of the first protrusion of the present invention, and the horizontal pull-up protrusion 132a of the present embodiment corresponds to an example of the second protrusion of the present invention.

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

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

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

The pitch P of the vertical pull-up protrusions 112a in the present embodiment corresponds to an example of the pitch of the first protrusions of the present invention, and the circumferential speed V1 of the vertical pull-up belt 112 is the first pull-up belt of the present invention. The traveling speed Vs during traveling of the crop extracting work corresponds to an example of the peripheral speed of the above.

Next, the pulling and conveying device 200 will be further described mainly with reference to FIG. 7.

FIG. 7 is a schematic plan view of a main part of the pulling and conveying device 200.

As shown in FIG. 7, the pulling and conveying device 200 includes (1) a pair of left and right endless pulling and conveying belts 210L and 210R, and (2) a rear end for driving the pair of left and right pulling and conveying belts 210L and 210R. Side pull-out drive pulleys 220L and 220R arranged side by side, (3) left and right pair pull-out driven pulleys 230L and 230R arranged at the front end side, and (4) left and right pull-out conveyance belts 210L and 210R, respectively. A pair of left and right rollers, which are disposed inside the pull-down driven pulleys 230L and 230R and which are provided with four holding rollers for applying a strong pressing force for holding the forage W1 of the radish W to the pull-out conveyance belt. Between the nipping roller groups 240L and 240R, and (5) the nipping roller group and the pull-out driving pulley, along the carrying path along which the nipping foliage portion W1 is carried (see arrow A in FIG. 7). A pair of left and right first tension rollers 250L, 250R, a pair of left and right second tension rollers 251L, 250R, and a pair of left and right third tension rollers 252L, 252R, which are arranged from the upstream side toward the downstream side with respect to (6) Left pull-out tension pulley group 260L arranged on the outer side and the inner side of the left pull-out conveyance belt 210L for adjusting the tension of the entire belt on the left side, and arranged on the outer side and the inner side of the right pull-out conveyance belt 210R, and on the right side. A right pull-out tension pulley group 260R that adjusts the tension of the entire belt, and (7) a pair of left and right pull-out transport frames 270L and 270R that are hollow prismatic members having a hollow interior and bearing portions 271 at their rear ends. , Are provided.

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 bearings 271 of the pair of left and right pull-out transport frames 270L and 270R, and the respective drive shafts are driven. The lower end of the shaft 221 is connected to the pair of left and right universal joints 6c, 6c, and the power branched in the left and right direction is transmitted from the front end of the transmission shaft 6b (see FIG. 1).

The lower ends of the pair of left and right universal joints 6c, 6c are bearing members provided at the upper and lower portions of the left and right ends of the transmission branch case 6d (see FIGS. 1 and 3) having a substantially T shape in plan view. 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 of the transmission shaft case that houses the transmission shaft 6b, and the vertical transmission shaft 6e that vertically transmits the power branched in the left-right direction from the front end of the transmission shaft 6b, etc. Contains the transmission mechanism of.

Further, the left pulling driven pulley 230L and the left holding roller group 240L are respectively rotatable with respect to the left holding force adjusting frame 280L attached to the lower surface of the tip end portion of the left pulling and conveying frame 270L so as to be repositionable. Is attached to.

Further, the right pulling driven pulley 230R and the right holding roller group 240R can be respectively rotated with respect to the right holding force adjusting frame 280R mounted on the lower surface of the tip end portion of the right pulling and conveying frame 270R so as to be repositionable. Is attached to.

Further, the pair of left and right clamping force adjusting frames 280L and 280R are provided with long holes 281 that are long in the left-right direction at two positions in the front and rear, and within the range of the long holes 281 in the left-right direction (arrows in FIG. 7). After being slid to (H) and positioned, the pair of left and right clamping force adjusting frames 280L and 280R are fixed to the pair of left and right pull-out conveying frames 270L and 270R by fastening members 282 such as bolts and nuts. is there.

As a result, the worker loosens the fastening member 282 and slides and positions the pair of left and right clamping force adjustment frames 280L, 280R in the left-right direction (see arrow H in FIG. 7) and then positions the left-right fastening member 282 by the fastening member 282. By firmly fixing each of the pair of clamping force adjustment frames 280L, 280R to the pair of left and right pull-out transport frames 270L, 270R, it is easy to make the gap G (see FIG. 7) between the pair of left-right pull-out transport belts 210L, 210R. Can be adjusted to

Therefore, the operator can easily adjust the clamping force on the upstream side of the conveyance path of the pulling and conveying device 200 according to the thickness of the foliage portion W1 of the radish W and the working time (whether or not there is morning dew). Is too weak to prevent the radish W from being pulled out of the field, and the labor of pulling it out manually is prevented, and the gripping force is too strong to crush the foliage portion W1 and the shoulder alignment device 300 causes the foliage portion W1 to be removed. It cannot be taken over and can be prevented from being returned to the original hole in the field while the upper end W2b of the main body W2 of the radish W remains, so the upper end W2b of the main body W2 of the radish W is removed in a later step. The work does not occur.

Further, by loosening the fastening member 282 and slidingly moving each of the pair of left and right clamping force adjusting frames 280L, 280R, the clamping force can be easily adjusted on the upstream side of the transport path of the pulling/transporting device 200. As a result, work efficiency is improved.

Note that, instead of the configuration in which the clamping force of the pulling/conveying device 200 is adjusted using the fastening member 282 described above, for example, a radish for eating, a radish for processing (for example, oden), and pickles by a lever mechanism. The radish for use may be configured to switch the clamping force in three steps with one touch.

Next, the four nipping rollers forming the pair of left and right nipping roller groups 240L and 240R will be described with reference to FIGS. 8A and 8B.

FIG. 8A is a schematic view for explaining the two-stage roller member 241a of the four nipping rollers that configure the pair of left and right nipping roller groups 240L and 240R, and is a cross section taken along line EE in FIG. 7. FIG. 8B is a schematic view for explaining the one-stage roller member 241b of the four nipping rollers constituting the pair of left and right nipping roller groups 240L and 240R, and FF in FIG. FIG.

As shown in FIG. 7, the four nipping rollers that form the pair of left and right nipping roller groups 240L and 240R mounted on the pair of left and right nipping force adjustment frames 280L and 280R are close to the pair of left and right pulling driven pulleys 230L and 230R. One double-stage roller member A241a (see FIG. 8(a)), one single-stage roller member 241b (see FIG. 8(b)), and then the two-stage roller member 241a in this order from the one side. Two (see FIG. 8A) are arranged (see FIGS. 1 and 7).

In the two-stage roller member 241a, as shown in FIG. 8A, upper and lower two-stage rollers that contact the inner wall surfaces of the pair of left and right pull-out conveyor belts 210L and 210R are rotatably attached to the long shaft 241a1. By inserting the rib-shaped protrusions 211 protruding inward from the inner wall surfaces of the pair of left and right pull-out conveyor belts 210L and 210R into the gap between the upper and lower two-stage rollers, the pressing force of the rollers is increased. It is a structure that is surely transmitted to the side.

As shown in FIG. 8(b), the one-stage roller member 241b has an upper one-stage roller that comes into contact with the inner wall surfaces of the pair of left and right pull-out conveyor belts 210L and 210R and is rotatably attached to the short shaft 241b1. The upper roller is disposed above the rib-shaped projection 211 that protrudes inward from the inner wall surfaces of the pair of left and right pull-out conveyance belts 210L and 210R, so that the pressing force is applied to the belt by the upper roller. And the space is secured under the roller.

Further, since the one-step roller member 241b is arranged corresponding to the position where the foliage W1 of the radish W is taken over from the pulling and conveying apparatus 200 to the shoulder aligning apparatus 300, the one-step roller member on the bottom surface side of the pulling and conveying apparatus 200 is arranged. Since the front ends of the pair of left and right shoulder aligning belts 310L and 310R of the shoulder aligning device 300 can be inserted and arranged in the space of 241b (see FIG. 8B), the pulling and conveying device 200 and the shoulder aligning device 200 can be aligned. The gap with the device 300 can be shortened, and the foliage portion 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-shaped projections 211 of the pair of left and right pull-out conveying belts 210L and 210R to strengthen the holding force, and thus the holding state is lost against the reaction force when pulling out the radish W. Since it can be prevented from being released, the radish W can be reliably pulled out from the field.

Further, in the pair of left and right pull-out conveyor belts 210L and 210R, the front end portion of the shoulder aligning device 300 is arranged adjacent to the lower roller-free portion, and the foliage portion W1 is sandwiched by the one-stage roller member 241b via the belt. Therefore, it is possible to prevent the foliage portion W1 from falling off when it is taken over by the shoulder alignment device 300.

In addition, the left pull-out conveyance frame 270L rotatably supports the left first tension roller 250L, the left second tension roller 251L, and the left third tension roller 252L at one end thereof. A first pivot arm 250b and a second pivot arm having 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 attached to the other end of each. 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.

As a result, the rear end of each of the first rotating arm 250b, the second rotating arm 251b, and the third rotating arm 252b is fixed to the side surface of the pull-out transfer frame 270L on the left side. Due to the elastic force (contraction force) of the first tension spring 250a, the second tension spring 251a, and the third tension spring 252a, the urging force that tends to rotate clockwise in plan view is constantly exerted. Due to the biasing 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 pull-out conveyance belt 210L on the left side with different pressing forces. It is a composition.

That is, in the present embodiment, the pressing force exerted by 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 becomes weaker from the upstream side to the downstream side of the transport path. As described above, the elastic forces of the first tension spring 250a, the second tension spring 251a, and the third tension spring 252a are adjusted in advance.

As for the right-side pull-out and transport frame 270R, the first rotary arm 250b, the second rotary arm 251b, and the third rotary arm 252b also perform the first rotary motion similarly to the above-described left-side pull-out and transport frame 270L. It is attached so as to be rotatable around a fulcrum 250c, a second pivot fulcrum 251c, and a third pivot fulcrum 252c.

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 pulling and conveying belt 210R on the right side in this order. It is configured to press with a preset pressing force.

Further, at the rear end of the pulling and conveying device 200, the foliage portion W1 cut by the first cutting device 400 passes through the rear side of the outer peripheral edge of the pulling drive pulley 220R on the right side and is discharged toward the right side of the machine body. As described above, the foliage discharging member 290 is provided.

As shown in FIG. 2, the foliage discharging member 290 is curved in a substantially V shape in a plan view, and the curved portion is located outside the pulling drive pulley 220R on the right side from the exit side of the transport path of the pulling and conveying apparatus 200. From the upper foliage discharge guide 291 and the lower foliage discharge guide 292, which are rod-shaped members having a circular cross section, which are respectively arranged above and below the pulling drive pulley 220R on the right side along the rear side of the peripheral portion. It is configured.

The base portion 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 portion 291b of the upper foliage discharge guide 291 extends toward the right side of the machine body.

Further, the base portion 292a of the lower foliage discharge guide 292 is attached and detached by bolts to a guide fixing plate (not shown) whose one end is fixed to the inner side surface of the left pulling and conveying frame 270L and the other end extends downward. The tip part 292b of the lower foliage discharge guide 292 is fixed as possible and extends toward the right side of the machine body.

The radish W of this embodiment is an example of the crop of the present invention. The foliage portion W1 of the present embodiment is an example of the leaf portion of the present invention.

Further, the leaf part of the crop of the present invention refers to the part above the thick part of the crop (see reference numeral W1 in FIG. 1). In the present specification, a portion below the thick portion of the crop (for example, radish) (see reference numeral W2 in FIG. 1) is referred to as a main body of the crop (for example, radish).

Further, the pulling/conveying device 200 of the present embodiment corresponds to an example of the pulling/conveying device of the present invention.

Further, the configuration including the pair of left and right pull-out conveyance belts 210L and 210R, the pair of left and right pull-out driving pulleys 220L and 220R, and the pair of left and right pull-out driven pulleys 230L and 230R according to the present embodiment has a pair of left and right pull-out conveyance belts of the present invention. This is an example of a belt unit.

Further, the pair of left and right pull-out conveyance frames 270L, 270R of the present embodiment are examples of the belt unit support frame of the present invention.

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

FIG. 9 is a schematic plan view of a main part of the shoulder alignment device 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 described above, and (2) the pair of left and right shoulders. A pair of left and right shoulder alignment drive pulleys 320L and 320R arranged 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 arranged on the front end side. (4) A pair of left and right shoulder alignment first rollers 340L, 340R arranged downstream of the pair of left and right shoulder alignment driven pulleys 330L, 330R with reference to the transport direction A′ (see arrow A′ in FIG. 9). (5) a pair of left and right shoulder alignment second rollers 350L, 350R arranged downstream of the pair of left and right shoulder alignment first rollers 340L, 340R and upstream of the pair of left and right shoulder alignment drive pulleys 320L, 320R. (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, and on the right side. Right shoulder alignment tension pulley group 360R for adjusting the tension of the entire belt, and (7) a substantially rectangular plate-shaped member in a plan view, and a pair of left and right shoulder alignment driven pulleys 330L at the front end of each. The driven pulley supporting portions 331 that rotatably support the respective 330Rs from below are held so that their mounting positions can be changed (see arrow H in FIG. 9), and a pair of left and right left and right rear ends are provided. A pair of left and right shoulder alignment stays 370L, 370R to which drive pulley support portions (not shown) for rotatably supporting the shoulder alignment drive shafts 321 of the shoulder alignment drive pulleys 320L, 320R are rotatably fixed. , Are provided.

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

The upper ends 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 housed in the left and right transmission cases 8L and 8R. Is removably inserted and connected by a spline connection to the rotating shaft of each of the shoulder aligning drive shafts 321 and 321. Each of the lower ends of the shoulder aligning drive shafts 321 and 321 has a pair of left and right disk-shaped body cutting rotary blades 510L and 510R (see FIG. 9). (Refer to FIG. 3) is detachably attached together with a disc-shaped spacer (not shown) having a predetermined thickness.

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

Accordingly, by providing the pair of left and right body cutting rotary blades 510L and 510R of the second cutting device 500 on the shoulder alignment drive shafts 321 and 321 of the pair of left and right shoulder alignment drive pulleys 320L and 320R, the driving force of the shoulder alignment device 300 is obtained. Since it is possible to drive the second cutting device 500 by utilizing, the number of parts can be reduced and the weight of the machine body can be reduced.

Moreover, since the upper and lower ends W2b of the radish W can be sandwiched from the left and right by providing the body cutting rotary blades 510L and 510R in a pair on the left and right, the upper end W2b of the radish W can be completely cut and the field Y The cut surface of the pulled out radish W is beautifully finished.

In addition, the spacer can be removably mounted between the upper surfaces of the pair of left and right disk-shaped body cutting rotary blades 510L, 510R and the lower surfaces of the pair of left and right shoulder alignment drive pulleys 320L, 320R. Since the cutting position of the upper end W2b of the main body W2 can be changed, the cutting position can be realized according to the size of the radish and the condition at the time of shipping, 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) If the spacer is not attached, the pair of left and right A certain gap is formed between the lower surfaces of the shoulder alignment drive pulleys 320L and 320R and the upper surfaces of the pair of left and right body cutting rotary blades 510L and 510R by ensuring a predetermined height due to the presence of the boss, and ( 2) When the spacer is mounted, the boss is provided between the lower surface of the spacer mounted on the lower surface side 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. The predetermined height is ensured due to the existence of the above, and a certain gap is formed.

Thereby, since a constant gap can be always secured on the upper surfaces of the pair of left and right body cutting rotary blades 510L, 510R, fragments such as the upper end W2b of the radish W cut by the pair of left and right body cutting rotary blades 510L, 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 it is possible to prevent clogging between the lower surface of the above and the upper surfaces of the pair of left and right body cutting rotary blades 510L, 510R, the work of removing the fragments of the clogged radish W becomes unnecessary. Even when the spacer is not attached, a certain gap is secured between the lower surfaces of the pair of left and right shoulder alignment drive 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, 510R from contacting the lower surfaces of the pair of left and right shoulder alignment belts 310L, 310L.

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

In addition, the left shoulder alignment first roller 340L is rotatably attached to the left belt spacing first adjustment plate 341L that is positionably attached to the lower surface of the left shoulder alignment stay 370L.

The right shoulder alignment first roller 340R is rotatably attached to the right belt spacing first adjustment plate 341R movably attached to the lower surface of the right shoulder alignment stay 370R.

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

The left shoulder alignment second roller 350L is rotatably attached to the left belt spacing second adjustment plate 351L that is rotatably attached to the lower surface of the left shoulder alignment stay 370L.

The right shoulder alignment second roller 350R is rotatably attached to the right belt spacing second adjustment plate 351R that is rotatably attached to the lower surface of the right shoulder alignment stay 370R.

Further, each of the pair of left and right belt spacing second adjustment plates 351L, 351R is provided with a long hole 342 that is long in the left-right direction, and within the range of the long hole 281 the left-right direction (see arrow H in FIG. 9). ), and then positions the pair of left and right belt spacing second adjustment plates 351L and 351R to the 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 worker loosens a fixing member (not shown) that individually fixes each of 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 to loosen the shoulder alignment device 300. After being slid in the left-right direction (see arrow H in FIG. 7) and positioned so that the belt distance J1 on the entrance side of the conveyance path of FIG. The support portions 331 and 331 are firmly fixed to the pair of left and right shoulder alignment stays 370L and 370R.

Furthermore, the worker loosens the fastening member 343 so that the belt interval of the transport path becomes gradually narrower from the upstream side to the downstream side, and the first cutting device 400 (see FIGS. 1 and 9) in plan view. So that the belt distance J2 (see FIG. 9) at the position where the pair of left and right shoulder alignment second rollers 350L and 350R opposes to each other substantially corresponds to the position where the cutting of the foliage portion W1 is started by the left and right pair. The belt spacing first adjustment plates 341L and 341R, and the pair of left and right belt spacing second adjustment plates 351L and 351R downstream thereof are individually slid in the left-right direction (see arrow H in FIG. 9). After positioning, each of the fastening members 343 causes the pair of left and right belt spacing first adjustment plates 341L and 341R and the pair of left and right belt spacing second adjustment plates 351L and 351R to be paired with the left and right shoulder alignment stays 370L, By firmly fixing to the 370R, the intervals J1 to J2 (see FIG. 9) between the pair of left and right shoulder alignment belts 310L and 310R can be easily adjusted.

Therefore, according to the above-described configuration, the operator has a pair of left and right driven pulley support portions 331 and 331, a pair of left and right belt spacing first adjustment plates 341L and 341R, and a pair of left and right downstream belt spacing second adjustments. The plates 351L and 351R can be individually slid in the left-right direction (see arrow H in FIG. 9) to be positioned and firmly fixed to the pair of left and right shoulder alignment stays 370L and 370R. The width of the passage formed by the shoulder alignment belts 310L and 310R (see symbols J1 and J2 in FIG. 9) is adjusted to be wide in the case of a large rhizome diameter (20 mm to 60 mm) for oden, In the case of a small diameter large rhizome 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 attached to the rotary shaft 721 protruding upward from the second sprocket 720 for the first cutting device, which will be described later, housed in the left transmission case 8L. On the other hand, they are detachably inserted and connected by a spline connection, and the mounting height of the single foliage rotary blade 410 is changeable.

Further, the cutting guide bar 420 of the first cutting device 400 described above has a substantially inverted L shape in a side view, and the lower end portion thereof is welded and fixed to the side surface of the right shoulder alignment stay 370R. The tip 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 arranged at a position overlapping the outer peripheral portion of the rotary blade 410 in plan view. (See Figure 9).

According to the above configuration, the pulling/conveying device 200 is appropriately pulled out when the radish W is pulled out by appropriately performing the pair of right and left sandwiching roller groups 240L, 240R of the pulling/conveying device 200 in the left-right direction (see arrow H in FIG. 7). On the other hand, in the range in which the largest load is applied, the pressing force of each nipping roller is reliably transmitted to the pair of left and right pull-out conveyor belts 210L and 210R, and the foliage W1 of the radish W is firmly nipped and moved diagonally rearward and upward. As a result, the main body W2 of the radish W is reliably pulled out from the field Y.

After that, as the left and right pair of first tension rollers 250L and 250R are conveyed toward the third tension rollers 252L and 252R, the clamping force of the belt by the tension rollers of the pulling and conveying device 200 becomes weaker.

On the other hand, below that, the belt distance J1 (see FIG. 9) on the entrance side of the conveying path in the shoulder aligning device 300 arranged horizontally with respect to the surface of the field Y is equal to the shoulder W2a at the upper end of the radish W. Is set so as not to pass upward, and is configured not to hinder the upward movement of the radish W by the pulling/conveying device 200. However, the belt interval of the conveying path of the shoulder aligning device 300 is as described above. It gradually narrows from the upstream side toward the downstream side, and the sandwiching force by the pair of left and right shoulder alignment belts 310L and 310R gradually increases.

As a result, as shown in FIG. 1, the foliage portion W1 of the radish W is moved diagonally rearward and upward along the transport direction A (see FIG. 7) of the pull-out transport device 200, but the main body portion W2. The upper shoulder portion W2a of the shoulder aligning device 300 is restrained from moving upward by contacting the lower surfaces 310La and 310Ra (see FIG. 8B) of the pair of left and right shoulder aligning belts 310L and 310R. .. 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 aligning belts 310L and 310R, the gripping force of the pulling and conveying device 200 is weak and the gripping force of the shoulder aligning 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 first cutting device 400 (see FIGS. 1 and 9) starts cutting the foliage W1. , The shoulders W2a of the radish W are aligned in the height direction.

As a result, the shoulder aligning device 300 aligns the positions of the shoulders W2a of the radish W, so that the first cutting device 400 can cut the foliage W1 of the radish W at a desired position, and the second cutting With the device 500, the upper end W2b of the main body W2 of the radish W can be reliably cut at a desired position, and the cut surface is also finished neatly.

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 work of the upper end portion W2b of the main body portion W2 of the radish W in the post-processing, and the work efficiency is improved and the labor is reduced.

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

Further, the upper end portion W2b of the radish W cut by the second cutting device 500 is directly discharged downward from the exit side of the conveying path of the shoulder aligning device 300.

Further, the pair of left and right body cutting rotary blades 510L and 510R are attached to the shoulder alignment drive shafts 321 and 321 of the pair of left and right shoulder alignment drive pulleys 320L and 320R, whereby the structure can be simplified and the cost can be reduced and the machine body can be reduced. The weight can be reduced.

Next, referring to FIG. 9, the driving force from the engine 4 is transmitted to the pair of left and right shoulder alignment drive pulleys 320L and 320R, and the pair of left and right body cutting rotary blades 510L and 510R coaxially arranged with them. , The 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 the single foliage rotary blade 410. The second chain transmission mechanism 700 housed in the transmission case 8L arranged 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 includes (1) the power branched from the front end of the transmission shaft 6b (see FIG. 9) in the left and right directions to the left and right of the transmission branch case 6d. A pair of left and right first sprockets 610L and 610R that are transmitted through vertical transmission shafts 6e that are vertically arranged at both ends, and (2) a pair of left and right shoulder alignment drive pulleys 320L and 320R. A pair of left and right second sprockets 620L and 620R arranged at the upper end portion and to which the pair of left and right shoulder alignment drive pulleys 320L and 320R are detachably spline-connected, and (3) a pair of left and right first sprockets 610L and 610R and left and right. And a pair of left and right first transmission chains 630L and 630R around which a pair of second sprockets 620L and 620R are wound.

As shown in FIG. 9, the second chain transmission mechanism 700 includes (1) the first sprocket on the left side to which the power branched leftward from the front end of the transmission shaft 6b (see FIG. 9) is transmitted. 610L, the first sprocket 710L for the first cutting device, which is arranged above the first sprocket 610L, and (2) the rotary blade 410, which is coaxial with the rotation axis of the single foliage rotary blade 410. Second sprocket 720 for the first cutting device, which is arranged below the blade and to which the rotary blade 410 is detachably spline connected, and (3) the first sprocket 710 for the first cutting device and the second sprocket for the first cutting device. 720 and a second transmission chain 730 wound around.

Further, because of the above structure, a space is secured below the second cutting device 500, so that the upper end W2b is cut and the radish W returned to the original hole of the field Y is contacted and the main body W2 is damaged. It is possible to prevent the product value from decreasing.

Further, 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, The shoulder W2a at the upper end of the main body W2 of the radish W abuts on the lower surfaces 310La and 310Ra of the pair of left and right shoulder alignment belts 310L and 310R, and it is possible to prevent the shoulders W2a from being pulled up further, so that the alignment conveyance is performed. The belt is prevented from turning over and coming off.

Further, by providing the pulling/conveying device 200 with a pair of right and left holding roller groups 240L and 240R, the holding force in the vicinity of the entrance of the feeding path of the pulling/conveying device 200 becomes strong, so that even a heavy radish can be firmly held. Since it can be pinched, it can be reliably pulled out from the field, and the efficiency of radish collection work is improved.

Further, as shown in FIG. 3, each of the pair of left and right pulling and conveying device covers 202L and 202R described above is configured to be divided into front and rear in the vicinity of the center in plan view.

That is, the left pulling and conveying device cover 202L is composed of the left front cover 202La and the left rear side cover 202Lb, and the right pulling and conveying device cover 202R is composed of the right front cover 202Ra and the right rear cover 202Rb. Has been done.

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

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

Further, the pair of left and right conveyor belt cover overhang portions 202LL and 202RR of 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. Below the foliage discharging member 290, both side rear covers 204 that cover so as to surround the rear end side of the pulling and conveying device 200 in plan view are detachably fixed with bolts and nuts.

As a result, it is possible to prevent the cut foliage portion W1 from falling on the first cutting device 400 and causing cutting failure.

Further, as a result, it is possible to cover the foliage rotary blade 410 and the pair of left and right body-cutting rotary blades 510L, 510R, which improves safety.

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

That is, the tire air pressure 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 out by the pulling and conveying device 200. All or part of the reaction force in the direction is configured to be adjustable by the operator so that it can be absorbed by the deformation of the tire of the gauge wheel 2. Specifically, the operator slightly injects air into the tire of the gauge wheel 2 until it reaches a limit value, rather than slightly.

As a result, all or part of the downward reaction force generated when the pulling and conveying apparatus 200 pulls out the radish W is absorbed by the deformation of the tire of the gauge wheel 2, so that a large downward load on the pulling and conveying apparatus 200 causes The front side of the machine body is prevented from inclining 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 pulling work height is largely changed in the vertical direction.

Further, in the radish pulling machine 1 of the present embodiment, an internal pressure detection sensor (not shown) that detects the internal pressure of the tire of the gauge wheel 2 may be provided inside the gauge wheel 2. In the case of this configuration, when the control unit (not shown) mounted on the radish extractor 1 determines that the internal pressure detected by the internal pressure detection sensor has reached a predetermined value or more, an alarm device (not shown) issues an alarm. To a motor or a hydraulic cylinder (not shown) provided in the support stay moving mechanism 10 that outputs a signal for producing a sound and moves the support stay 2a in the up-down direction (see arrow T in FIG. 1), A signal for increasing the pulling work height of the pulling and conveying device 200 is output. As a result, the pulling work by the pulling and conveying device 200 can be assisted.

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

As a result, since the pulling operation is not continued in the state where the front end portion of the pulling and conveying device 200 is lowered too much, the pulling of the radish W is prevented from being failed because the foliage portion W1 of the radish W is not pinched. ..

Further, as a result, the control unit automatically turns ON/OFF (drives or stops) the motor, the hydraulic cylinder, or the like, so that no complicated operation is required and the radish extraction work can be reliably performed.

Further, in the radish pulling machine 1 of the present embodiment, an inclination sensor (not shown) for detecting the inclination in the machine longitudinal direction is provided, and when the control unit determines that the machine longitudinal inclination angle is ±3° or more, It is also possible to stop the drive of a motor or a hydraulic cylinder (not shown) provided in the support stay moving mechanism 10 described above to suppress the amount of change in the pulling work height of the pulling and conveying device 200.

As a result, it is possible to prevent the pulling work height from becoming inappropriate due to the change width of the pulling work height of the pulling and conveying device 200 becoming too large, so that the pulling work of the radish can be performed more reliably.

In the case of this configuration, the inclination sensor is preferably provided near the entrance of the transport path of the pull-out transport device 200. Accordingly, the inclination angle can be detected in a portion where the posture of the pulling/conveying device 200 frequently changes, so that the pulling work height can be sensitively changed.

Next, a soila 800 for cutting a root extending from the main body W2 of the radish W into the ground during the pulling 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 soila 800 provided in the radish drawing machine 1 of the present embodiment. The soila 800 during the radish drawing operation is shown by the solid line, and the soila 800 in the retracted state during the non-work (running) is shown by the chain double-dashed line.

FIG.10(b) is MM sectional arrow line view of the soila 800 shown in FIG.10(a). Further, FIG. 10C is a cross-sectional arrow view in the same cross section as that of FIG. 10B, regarding a soila of another example in which the direction of the inclined surface of the single edge is different from that of the soila 800 shown in FIG. 10A. is there.

As shown in FIGS. 10( a) and 10 (b ), the soila 800 of the present embodiment has a substantially L-shape in 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 machine body in a plan view.

In addition, a rectangular solar stay 810 for slidably holding the soila 800 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 soila stay 810, and penetrates the long hole 811 and a hole portion provided at substantially the center of the upper side of the soila 800. A slip-out prevention split pin is removably attached to the tip end side of the disposed soila holding pin 820.

Accordingly, when the retaining pin 820 can be pulled out by pulling out the retaining split pin, in a work place where the soila 800 is unnecessary (for example, a place where the soil is soft and the ridges collapse too much when the soila 800 is used), The soila 800 can be removed without tools, and it is possible to flexibly respond to changes in working conditions.

It should be noted that in the soila holding pin 820, a hole for mounting a slip-out prevention split pin is provided from the root side to the tip side of the soila holding pin 820 so that the hole is orthogonal to the central axis of the soila holding pin 820. A plurality are provided at different positions along the line.

As a result, when the retaining split pin is pulled out, the soila holding pin 820 can be pulled out, so that the soila 800 can be mounted on any of the left and right side surfaces of the soila stay 810.

Further, since a plurality of holes for mounting the retaining cotter pins are provided, a spacer is inserted between the soila 800 and the soila stay 810, and a hole on the front end side is formed as a hole for inserting the retaining cotter pins. By selecting it, it becomes possible to adjust the position in the lateral direction when mounting the soila 800.

The ridges of the radish may differ depending on the region or the field area, but the attachment position of the soila 800 can be adjusted so that the attachment positions are suitable for the respective ridges.

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

In addition, in front of the hydraulic cylinder 830 for moving the boiler, a substantially rectangular rotation arm 840 is rotatably attached to the right main frame 9R at a substantially central portion in the longitudinal direction.

One end 840a of the rotating arm 840 is rotatably connected to the tip end of the piston rod 831 of the hydraulic cylinder 830 for moving the boiler, and the other end 840b of the rotating arm 840 is the upper side of the soila 800. A length adjusting rod 850 is rotatably connected to any one of a plurality of connecting holes 802 provided on the rear end side of the section.

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

That is, the position (the position in the front-rear direction and the position in the depth direction of the ridges) of the soila 800 during the pulling out work of the radish is adjusted by sliding the soila 800 within the predetermined range on the front side of the long hole 811. This can be done (see FIGS. 1 and 4).

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

That is, in the pulling operation, the soila 800 has its blade edge located in the vicinity of the front end portion of the pulling/conveying device 200 in a side view as shown by the solid line in FIGS. 1 and 4 (see FIG. 1). As viewed, it is located in the vicinity of the inner side of the right vertical raising device 110R. Further, when not working, the soila 800 rises and retracts below the shoulder alignment device 300 in a side view, as indicated by the chain double-dashed line in FIG.

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

Further, the position of the soila 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 of the soila 800.

When the soila 800 is not used, it can be used as a movable balance weight by turning the soila 800 upside down and attaching it to the soila stay 810.

In addition, the piston rod 831 of the hydraulic cylinder 830 for moving the boiler may be automatically reciprocated within a predetermined range while the radish is being drawn. With this configuration, the tip end side of the soila 800 reciprocates in the ridges in the up-and-down and front-rear directions, so that the soil on one side of the radish W is loosened in the up-and-down and front-rear directions, and extends to the side of the radish W. The cutting of the lateral roots can be performed more effectively, and the work of pulling out the radish W by the pulling and conveying device 200 can be easily performed.

In addition, in the present embodiment, as described above, by mounting on the one side, that is, on the right side of the entrance side of the conveying path of the pulling and conveying apparatus 200 of the soila 800, compared to the case where the soila is mounted on both left and right sides The load on 4 can be reduced.

Further, since the soila 800 is mounted only on the right side, the traveling direction of the aircraft will deviate to the direction in which the soila 800 is mounted, that is, to the right, and the left side will be corrected in order to correct this misalignment. It is necessary to disengage the side clutch.

However, in the present embodiment, as shown in FIG. 10B, the single-edged inclined surface 801 of the soila 800 is substantially parallel to the centerline CL of the machine body in plan view, and the inclined surface 801 of the soila 800 is Is arranged so that the extension line of the opposite surface 803 located on the opposite side intersects with the center line CL of the machine body at the front, so that the traveling direction of the machine body is the direction opposite to the position where the soila 800 is mounted, that is, Since the force that shifts to the left acts, the force that shifts to the right described above is offset, and the aircraft can move straight. This can reduce the operation of disengaging the side clutch.

In the above example, the case where the soila 800 is arranged as shown in FIG. 10B has been described, but the present invention is not limited to this, and the soila 800 may be arranged as shown in FIG. 10C, for example. ..

That is, in the soila 800 shown in FIG. 10C, the extension line of the inclined surface 801 of the single edge intersects with the centerline CL of the machine body in the front in a plan view, and the opposite surface 803 of the soila 800 is the machine body. It may be arranged so as to be substantially parallel to the center line CL. Even in this case, since the extension line of the single-edged inclined surface 801 of the soila 800 is arranged so as to intersect with the center line CL of the aircraft body in the front view in plan view, a force for shifting to the left acts, By canceling the above-mentioned force to shift to the right, the aircraft can go straight.

Further, in the present embodiment, the configuration is such that the soila 800 is mounted only on the side on which the gauge wheel 2 is provided, so that the gauge wheel 2 reduces the shift to the right in the traveling direction, so that the aircraft travels straight ahead. Is possible.

Also, the configuration of generating the force that offsets the force of the rightward displacement of the aircraft by devising the layout of the soila 800 has been described, but the present invention is not limited to this, and for example, only on the side where the gauge wheel 2 is provided. It is also possible to adopt a configuration in which the soila 800 can be mounted and the gauge wheel 2 can be fixed inward from the traveling direction in plan view. Even with 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-described embodiment, when the horizontal transport speed components of the pull-out transport device 200 and the shoulder alignment device 300 are set to be substantially the same as the traveling speed of the machine body (for example, 0.18 m/sec). However, not limited to this, for example, the working angle θ (see FIG. 6) of the pulling/conveying device 200 is set so that the horizontal conveying speed component Vh of the pulling/conveying device 200 is slightly higher than the traveling speed Vs of the machine body. It may be set to. For example, the working angle θ is set to 28° so that Vh is about 1.3 times Vs. Here, when the working angle θ=0°, the horizontal transport speed component Vh of the pulling/transporting apparatus 200 is assumed to match the traveling speed Vs of the machine body.

As a result, it is possible to prevent the radish W from being pushed down or broken and to prevent the radish W from failing to be pulled out.

Further, in the above-described embodiment, the case where the radish pulling machine 1 includes the shoulder aligning device 300 has been described, but the present invention is not limited to this, and the shoulder aligning device 300 may not be provided.

Further, in the above-described embodiment, the case where the radish pulling machine 1 includes the second cutting device (trunk cutting device) has been described, but the present invention is not limited to this, and for example, includes the second cutting device (trunk cutting device). It may be configured not.

Further, in the above-described embodiment, a case has been described in which each of the pair of left and right pulling/conveying device covers 202L, 202R has the conveying belt cover protrusions 202LL, 202RR for protecting the outer peripheral portion of the pulling/conveying device 200. .. In this case, 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 conveyor belt cover overhang portions 202LL and 202RR are, in a side view, the left and right pair of left and right shoulder aligning devices 300 described above. The shoulder alignment belts 310</b>L and 310</b>R may be configured to substantially match the positions in the height direction of the lower surfaces 310</b>La and 310</b>Ra (see FIG. 8B).

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

The shoulder aligning device 300 is arranged 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 in places where it is difficult for the operator to visually recognize them. There is. Therefore, as shown in FIG. 11, the lower end sides 202LLa and 202RRa of the pair of left and right conveying belt cover projecting portions 202LL and 202RR are set to the lower surface 310La of the pair of left and right shoulder alignment belts 310L and 310R, respectively. With the configuration in which the position in the height direction of 310 Ra is matched 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 When the shoulder portion W2a becomes visible, one of the lower end sides 202LLa and 202RRa of the pair of left and right conveyor belt cover overhang portions 202LL and 202RR, which is easy to visually recognize the position of the shoulder portion W2a in the height direction. By comparing the position in the height direction and the position in the height direction from the side surface, the difference Hd between the positions in the height direction (see FIG. 11) is the length that should be subsequently extracted by the extraction/conveyance device 200. I know in advance.

On the other hand, as described above, in the vicinity of the position where the cutting of the foliage portion W1 is started by the first cutting device 400 (see FIG. 1 and FIG. 9), the pulling and conveying device 200 and the shoulder alignment device 300 cause the shoulder portion of the radish W to come into contact. The positions of W2a in the height direction need to be aligned.

In order to satisfy this requirement, what value should be set for the above-mentioned difference Hd between the positions in the height direction is known in advance as a value unique to the radish extractor 1.

Therefore, in order to set the above-described difference Hd between the positions in the height direction to a desired known value (for example, 15 cm), the operator turns the turning handle 10a to rotate the gauge wheel 2. (See FIG. 1) or by rotating the chain case rotation handles 11L and 11R, the left and right rear wheels 3L and 3R are rotated about the output shaft 6a in the arrow U direction (see FIG. 1). The height and attitude of the airframe can be corrected by rotating each of them separately.

Further, in the above embodiment, as shown in FIG. 11, the lower end sides 202LLa and 202RRa of the pair of left and right conveyor belt cover overhang portions 202LL and 202RRa are positioned in the height direction with respect to the pair of left and right shoulder alignment belts 310L and 310R. Although the configuration in which the respective lower surfaces 310La and 310Ra are made to coincide with each other in the height direction in a side view has been described, the invention is not limited to this, and for example, the pair of left and right conveying belt cover protrusions 202LL and 202RR shown in FIG. However, as shown in FIG. 12, protruding portions 202LLb and 202RRb protruding further downward from the respective lower end sides 202LLa and 202RRa may be provided. FIG. 12 is a side view for explaining another example different from the example shown in FIG. 11, and is a main part of the radish pulling machine 1 showing a pair of left and right conveyor belt cover protrusions 202LL and 202RR having protrusions 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 same as the lower surfaces 310La and 310Ra of the left and right shoulder alignment belts 310L and 310R, respectively. The difference Hs from the position in the height direction is set to be the above-described desired value (for example, 15 cm) known in advance in a side view.

Therefore, when the shoulder portion W2a of the radish W becomes visible after passing through the pulling mechanism 100, the position of the shoulder portion W2a in the height direction is such that the protrusion lower end sides 202LLb1 of the pair of left and right protrusions 202LLb and 202RRb. , 202RRb1 to match the position in the height direction, the operator turns the turning handle 10a to adjust the height of the gauge wheel 2 (see FIG. 1) or turns the chain case. By rotating the handles 11L and 11R to individually rotate the pair of left and right rear wheels 3L and 3R about the output shaft 6a in the direction of arrow U (see FIG. 1), the height and attitude of the machine body Can be modified.

As a result, the shoulder aligning device 300 aligns the positions of the shoulders W2a of the radish W, so that the first cutting device 400 can cut the foliage W1 of the radish W at a desired position, and the second cutting With the device 500, the upper end W2b of the main body W2 of the radish W can be reliably cut at a desired position, and the cut surface is also finished neatly.

Further, in the above-described embodiment, the second cutting device (trunk cutting device) 500 is arranged below the shoulder aligning device 300, and the worker operates the radish pulling machine 1 while operating the second cutting device 500. Although the configuration in which the cut portion of is not visible is described, the present invention is not limited to this, and for example, by disposing the mirror below the engine 4 and disposing the reflecting surface of the mirror toward the front obliquely above, A configuration may be adopted in which the cut portion of the second cutting device 500 can be visually recognized while operating the pulling machine 1.

Further, in the radish pulling machine 1 of the above-described embodiment, the work lamp may be provided below the second cutting device (trunk cutting device) 500 provided below the shoulder alignment device 300. This makes it easier to confirm the process of pulling out the radish and cutting the upper end W2b of the main body W2 of the radish W.

Further, in the above-described embodiment, the case where the raising mechanism 100 includes 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 has been described. For example, if a pair of left and right connecting arms each having one end connected to the raising mechanism and the other end rotatably connected to the main body side are provided, the vertical raising device is left side (or right side). ), and one lateral pulling device is arranged on the right side (or left side) of the back surface thereof.

Further, in the above-described embodiment, in the pulling/conveying device 200, the left pulling driven pulley 230L and the left holding roller group 240L are rotatably attached to the left holding force adjusting frame 280L and the right pulling driven frame. The pulley 230R and the right sandwiching roller group 240R are provided with a right sandwiching force adjusting frame 280R rotatably attached, and both of the pair of left and right sandwiching force adjusting frames 280L and 280R are arranged in the left-right direction (see FIG. 7), the position adjustment is possible. However, not limited to this, for example, one of the pair of left and right clamping force adjustment frames 280L, 280R can adjust the position in the left-right direction. The position of the other frame may not be adjusted. Even in this case, the width (see reference numeral G in FIG. 7) on the entrance side of the conveying path of the pulling/conveying apparatus 200 can be easily adjusted, so that the same effect as in the case of the above configuration is exhibited.

Further, in the above embodiment, the pair of left and right shoulder alignment driven pulleys 330L and 330R, 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 are independently left and right. The case where the position adjustment is possible in the direction (see arrow H in FIG. 9) has been described, but the present invention is not limited to this, and for example, the left shoulder alignment driven pulley 330L, the shoulder alignment first roller 340L, and the shoulder alignment first pulley 340L. The two rollers 350L are integrally configured to be positionally adjustable in the left-right direction, and the right shoulder alignment driven pulley 330R, the shoulder alignment first roller 340R, and the shoulder alignment second roller 350R are integrated in the left-right direction. The position may be adjustable.

Further, in the above-described embodiment, the pair of left and right shoulder alignment driven pulleys 330L and 330R, 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 are respectively arranged in the left-right direction (FIG. (See arrow H in FIG. 9), the case where the position is adjustable is described, but the present invention is not limited to this, and for example, the left or right shoulder alignment driven pulley, the shoulder alignment first roller, and the shoulder alignment second roller. Only one of them may be configured to be positionally adjustable in the left-right direction. Even in this case, since the width of the shoulder alignment device 300 on the entrance side of the conveying path (see reference numeral J1 in FIG. 9) can be easily adjusted, the same effect as in the case of the above configuration is exhibited.

Moreover, in the said embodiment, although the 1st cutting device 400 demonstrated the structure provided with the single foliage rotary blade 410, it is not restricted to this, For example, the structure provided with a pair of right and left rotary blades may be sufficient. good.

Further, in the above-described embodiment, the first cutting device 400 has been described as having the single rotary blade for foliage 410, but the present invention is not limited to this, and may have, for example, a fixed blade. In this case, the fixed blade is arranged such that the blade portion thereof crosses the conveying path of the shoulder aligning device 300 in an inclined manner in a plan view, and the blade portion that crosses the conveying path of the shoulder aligning device 300. Is located in front of the pair of left and right body cutting rotary blades 510L, 510R (see FIG. 9) in plan view. With this configuration, the structure can be simplified.

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

In the above embodiment, the radish W was described as an example of the crop of the present invention, but the crop is not limited to this, and even if the crop to be extracted is a root vegetable such as carrot, It has the same effect.

In addition, the position of the transmission shaft 6b projecting forward from the mission case 6 in the height direction (see FIG. 1) described in the above embodiment is configured to be lowered, so that the inclination of the pulling and conveying device can be reduced. It can be made gentler than in the case of the above embodiment. With this configuration, it is possible to lower the leaf discharge position of the rear end portion of the pulling and conveying device from which the cut foliage portion is discharged, as compared with the case of the above-described embodiment, so that the foliage portion is less likely to be blown off by wind or the like. You can do it.

In the above embodiment, the pair of left and right shoulder alignment drive 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 are Substantially V-shaped grooves corresponding to the rib-shaped projections protruding from the inner peripheral surface of the shoulder alignment belt are formed at the respective outer peripheral ends, 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 invention is not limited to this. For example, a flange may be provided on the outer peripheral portion of the upper surface so that the outer diameter of each upper surface is slightly larger than the outer diameter of the lower surface. This collar portion can prevent the shoulder alignment belts 310L and 310R from derailing upward. Further, the left and right shoulder alignment drive pulleys 320L and 320R may be provided with convex portions all around the outer peripheral edge of the flange provided on the outer peripheral portions of the upper surfaces thereof.
With this configuration, in the shoulder aligning drive pulleys 320L and 320R of the shoulder aligning belts 310L and 310R of the shoulder aligning device 300, even when the belt interval is widened, it is possible to compensate for the reduction of the frictional force and maintain the carrying force. ..

In addition to the above-described collar portion, a pair of left and right shoulder alignment drive pulleys 320L and 320R of the shoulder alignment device 300, a pair of left and right first shoulder alignment rollers 340L and 340R, and a pair of left and right second shoulder alignment rollers 350L and 350R. A plate-shaped belt detachment prevention member having a diameter larger than the diameter of the flange portion may be provided near the upper portion of each of the above. With this configuration, since the belt detachment prevention member projects outward from the flange portion in plan view, it is possible to easily return even if the belt is detached.

In addition, the vicinity of the outer peripheral surfaces of the pair of left and right shoulder alignment belts 310L and 310R surrounding the outer circumferences of the pair of left and right shoulder alignment drive pulleys 320L and 320R, and the pair of left and right body cutting rotary blades 510L and 510R located below the outer peripheral surfaces. A scraper may be arranged at the position. With this configuration, it is possible to prevent the cut ends of the foliage or the dents of the radish W from remaining on the upper surfaces of the body-turning rotary blades 510L and 510R, and prevent the shoulder alignment belts 310L and 310R from flipping up. ..

INDUSTRIAL APPLICABILITY The crop extractor of the present invention has an effect that it can provide a crop extractor capable of performing the raising operation more stably, and is useful as a radish extractor or the like.

2 gauge wheel (pullout height adjustment mechanism)
2a Support stay (pull-out height adjustment mechanism)
4 Engine 5 Steering handle 10 Support stay moving mechanism (pullout height adjustment mechanism)
100 Raising mechanism 110L Vertical raising device (first raising device)
110R Vertical raising device (first raising device)
112 Vertical pulling belt (first pulling belt)
112a Vertically raised protrusion (first protrusion)
130L Lateral raising device (second raising device)
130R Lateral raising device (second raising device)
132 Vertical pulling belt (second pulling belt)
132a Horizontally raised protrusion (second protrusion)
170 Rotating Operation Unit 200 Pulling Conveying Device W Daikon (Crop)
W1 foliage part (leaf part)

Claims (1)

A raising mechanism (100) that causes the leaf portion (W1) of the crop (W), and a pulling conveyance that holds the leaf portion (W1) caused by the raising mechanism (100) and pulls out the crop (W) from the field. In a crop extractor equipped with a device (200),
A pull-out height adjusting mechanism (2, 2a, 10) for adjusting the height of the front end portion of the pull-out conveying device (200) from the field scene to start holding the raised leaf portion (W1) is provided,
The pull-out height adjusting mechanism (2, 2a, 10) includes a grounding wheel (2) rotatably arranged in the left-right direction, and a support stay (2a) rotatably supporting the grounding wheel (2). And a height adjusting device (10) for adjusting the height of the support stay (2a),
An internal pressure detection sensor for detecting the internal pressure of the grounding wheel (2) is provided, and when the internal pressure detection sensor detects an internal pressure of a predetermined value or more, the height adjusting device (10) sets the height of the support stay (2a). A crop extractor having a control unit for outputting a control command to raise the crop.