JP2022015625A - Paddy field working machine - Google Patents

Abstract

To provide a paddy field working machine easily turning with high workability even in a narrow place by reducing such a possibility that a part of a line marker comes into contact with another object, when a machine body turns.SOLUTION: A paddy field working machine comprises a line marker 5A in front of a driver's seat for forming a travel target line, where the line marker 5A includes a support part 52 supported by a traveling machine body so as to be horizontally swingable around a first vertical axis y1 along the vertical direction, and an extension rod part 53 capable of being upward/downward swingable around a first horizontal axis along the horizontal direction, at a tip end of the support part 52. The support part 52 is configured to change the attitude between a horizontal work attitude PS where it is extended laterally outward, a forward storage attitude PF where it is extending forward, and a rearward storage attitude PR where it is extended rearward.SELECTED DRAWING: Figure 5

Description

In the present invention, a paddy field is provided with a driver's seat in a passenger-type traveling machine and provided with a line marker for forming a running target line for a subsequent process in a field at a position on the side of the machine in front of the driver's seat. Regarding the work machine.

As described above, as a paddy field working machine provided with a line marker for forming a traveling target line for a rear stroke in a field at a position on the side side of the machine body in front of the driver's seat, conventionally, for example, is shown in Patent Document 1. There was something. In this paddy field working machine, the line marker includes a support portion supported by the traveling machine body and an extension rod portion provided at the tip end portion of the support portion. Then, the support portion is supported so as to swing left and right around the vertical axis center along the vertical direction with respect to the traveling machine body, and the extension rod portion is around the horizontal axis along the horizontal axis provided at the tip of the support portion. It is supported so that it can swing up and down.

Japanese Unexamined Patent Publication No. 2014-180227 (see paragraphs "0038", "0039", and "FIGS. 2 to 4").

In the paddy field work machine described in Patent Document 1, the support portion is projected laterally outward with respect to the traveling machine, and the extension rod portion is placed in a horizontal position so that the line marker is located far away from the traveling machine. Form a running target line. Then, by erecting the extension rod and rotating the support part around the center of the vertical axis so that it faces forward along the traveling machine, it can be folded relatively compactly to store the entire paddy field work machine. It can be made easier.
However, in this structure, if the aircraft is turned with the support portion facing forward, a part of the line marker may come into contact with other objects when turning at the ridge. In particular, if the extension rod portion is shortened and the length of the support portion is lengthened in order to lower the height when the entire line marker is stored, it may become more noticeable, and work in a narrow place. It can be detrimental and there is room for improvement in this regard.

The present invention is to reduce the possibility that a part of the line marker comes into contact with another object when turning the machine, and to provide a paddy field working machine that is easy to turn even in a narrow place with good workability.

The paddy field working machine of the present invention
A driver's seat is provided on the passenger-type traveling aircraft,
A line marker for forming a traveling target line for the rear stroke in the field is provided at a position on the side of the aircraft in front of the driver's seat.
The line marker is supported by the traveling machine body so as to swing left and right around the center of the first vertical axis along the vertical direction, and the first along the horizontal direction provided at the tip of the support portion. It is equipped with an extension rod that is supported so that it can swing up and down around the center of the horizontal axis.
The support portion has a lateral working posture extending from the center of the first vertical axis toward the lateral side of the traveling machine and a forward direction extending forward along the center of the first vertical axis from the center of the first vertical axis. It is characterized in that the posture can be switched between the retracted posture and the rearward retracted posture extending rearward from the center of the first vertical axis.

According to the present invention, the support unit can switch between a forward retracted posture and a backward retracted posture in addition to the lateral working posture extending from the center of the first vertical axis toward the laterally outward side of the traveling machine. It is configured.
Therefore, it is possible to appropriately form the desired running target line in the sideways working posture, and to compactly store the entire line marker in the forward storage posture, but also in the backward storage posture. It is easy to turn the aircraft while avoiding contact with other objects.
In other words, by setting the support portion to the backward retracted posture extending backward from the center of the first vertical axis, the entire line marker is almost within the range of the traveling locus of the front end of the traveling aircraft. Since the machine can be turned, it is easy to avoid contact with other objects, and it is easy to secure a good workability even in a narrow place.

In the above configuration, an operation in which the support portion can be swiveled around the center of the first vertical axis integrally with the support portion at a base end portion on the side opposite to the tip portion provided with the extension rod portion. Along with the attachment of the lever, the operation lever is attached to the support portion so as to be undulating and swingable around the center of the second horizontal axis in the direction intersecting the center of the first vertical axis.
It is possible to engage the traveling machine with the operation lever that is undulated and swung around the second horizontal axis center to regulate the turning of the support portion around the first vertical axis center. A joint recess is provided,
It is preferable that the operating lever and the engaging recess form a lock mechanism capable of fixing and releasing the posture of the support portion with respect to the traveling machine body.

According to this configuration, the posture of the support part with respect to the traveling machine is fixed and fixed by the operation lever attached to turn the support part around the center of the first vertical axis and the engaging recess provided in the traveling machine. An unlockable lock mechanism is configured.
Therefore, the operation lever for performing the turning operation of the support portion can also be used as a component of the lock mechanism, and can also be used as an operating tool for fixing and releasing by the lock mechanism.

In the above configuration, it is preferable that the lock mechanism is formed with a plurality of engaging recesses so as to engage with the operating lever at a plurality of locations in the longitudinal direction of the operating lever in the lateral working posture. ..

According to this configuration, the operating lever is configured to engage with the engaging recesses at a plurality of points in the longitudinal direction of the operating lever with the support portion in the sideways working posture, so that the operating lever is simply used. It is easier to maintain the engaged state more firmly than the state of being engaged with one engaging recess.
As a result, the engaged state of the operating lever with the engaging recess is firmly maintained in the lateral working posture. Therefore, it is easy to stably maintain the lateral working posture of the support portion on which a relatively large load is likely to act due to the formation of the traveling target line.

In the above configuration, it is preferable that an urging spring is provided to urge the operating lever that can undulate and swing around the center of the second horizontal axis to the side that engages the engaging recess.

According to this configuration, the operating lever that can undulate and swing around the center of the second horizontal axis is urged to the side that engages with the engaging recess by the urging spring, so that the operating lever from the engaging recess can be used. It is easy to prevent slipping out.

In the above configuration, among the driver step of the traveling machine, the driver step on the front side of the driver's seat has a wide portion closer to the driver's seat on the rear side and a width on the front side far from the driver's seat. A narrow portion is formed, the first vertical axis core of the line marker is provided on the lateral side of the narrow portion, and the support portion in the forward storage posture is wider than the lateral width of the wide portion. It is preferable that it is configured to be located on the center side of the aircraft.

According to this configuration, the support unit in the forward storage posture is located closer to the center of the aircraft than the width in the left-right direction of the wide portion. , The support unit can be stored compactly in a state where it does not protrude outward from the wide portion of the operation unit step.

In the above configuration, on the lateral side of the aircraft in front of the driver's seat, at a position below the movement locus of the line marker around the center of the first vertical axis, an adjacent marker for using the adjacent strip as a traveling index is provided. It is preferable that it is provided.

According to this configuration, the adjacent marker does not interfere with the movement locus of the line marker around the center of the first vertical axis, and it is easy to change the posture of the line marker.

In the above configuration, the adjacent marker is supported by a mounting bracket for mounting the support portion to the traveling machine body, and is around the center of the second vertical axis along a vertical direction different from the center of the first vertical axis. It is preferable that the line marker is configured so that it can swing left and right separately.

According to this configuration, the adjacent marker can be supported by the traveling machine by using the mounting bracket for attaching the support portion to the traveling machine, and the mounting structure of the adjacent marker can be simplified. Further, since the adjacent marker is also configured to swing left and right around the center of the second vertical axis, which is different from the center of the first vertical axis, it is easy to change the posture of the adjacent marker.

In the above configuration, the adjacent marker is configured to be selectively pivotally connected to a plurality of positions of the line marker at a position on the front side and a position on the rear side of the center of the first vertical axis. It is preferable to have it.

According to this configuration, the adjacent markers are configured so that they can be selectively pivotally connected to a plurality of locations, one on the front side of the center of the first vertical axis of the line marker and the other on the rear side. ..
Therefore, depending on whether the frequency of the posture change of the line marker around the center of the first vertical axis is higher on the front side or the rear side, the pivotal connection of the adjacent marker is on the side opposite to the side with the higher frequency. The location can be determined. As a result, it is possible to reduce the degree to which the adjacent marker interferes with the posture change of the line marker even when a pointer member for facilitating the positional relationship with the traveling index is attached to the tip of the adjacent marker.

In the above configuration, spare seedling stands are erected on both the left and right sides of the traveling machine, a communication antenna is provided on the upper part of the spare seedling stand, and the communication antenna is more than the top of the spare seedling stand. The extension rod portion of the line marker in the forward storage posture and the backward storage posture is configured so that the posture can be switched between an upright posture in a high position and a lying posture folded so as to be lower than the upright posture. It is preferable that the top of the antenna is lower than the top of the spare seedling stand with the communication antenna in the tilted position.

According to this configuration, the top of the extension rod of the line marker is lower than the top of the spare seedling stand with the communication antenna at the highest point on the traveling machine in the inverted position. Therefore, it is possible to easily store the traveling machine in a storage shed that is not tall.

In the above configuration, the spare seedling stand is provided with a support column erected on both the left and right sides of the traveling machine and a seedling stand portion supported by the support, and the seedling stand portion is provided with the support column. A mounting member that can fix and release the vertical position with respect to the vertical position is provided, a connecting bolt that connects the mounting member and the support column at a plurality of upper and lower positions is provided, and a stopper hole through which the connecting bolt can be inserted is provided above and below the support column. It is preferable that the stopper holes are formed at a plurality of three or more locations along the direction and are provided at equal intervals in the vertical direction of the column.

According to this configuration, when the spare seedling stand is attached to the columns erected on the left and right sides of the traveling machine, it is easy to simplify the structure and processing for adjusting the height of the seedling stand portion. In this structure, stop holes for inserting connecting bolts formed in the column are provided at three or more points along the vertical direction of the column at equal intervals. Therefore, when setting the height of the seedling stand portion using the two upper and lower stop holes, the stop hole for inserting the connecting bolt that stops the lower side of the seedling stand portion at the upper position is provided below. It can also be used as a stop hole for inserting a connecting bolt that stops the upper side of the seedling placement table that has been changed to the position.
As a result, the number of stop holes formed in the column can be reduced, the man-hours for processing the stop holes are small, and the structure can be easily simplified.

It is a side view which shows the whole of a paddy field working machine. It is a top view which shows the whole of a paddy field working machine. It is a front view which shows the marker device on the left side in the marker retracted state. It is sectional drawing which shows a part of the marker apparatus in the front view. It is a top view which shows the use state of a marker device. It is a top view which shows the support structure and the lock mechanism of a marker. It is an exploded perspective view which shows the support structure and the lock mechanism of a marker. It is an exploded perspective view which shows the support structure of the spare seedling stand.

Hereinafter, an example of the embodiment of the present invention will be described based on the description in the drawings.
Unless otherwise specified, the front-back direction and the left-right direction in the description of the present embodiment are described as follows. That is, in the paddy field work machine to which the present invention is applied, the traveling direction on the forward side (see arrows F in FIGS. (See arrow B in FIG. 2) is "rear", the direction corresponding to the right side with respect to the forward-looking posture in the front-back direction (see arrow R in FIG. 2) is "right", and similarly the direction corresponding to the left side (see FIG. 2). (See arrow L) is "left".

[Overall configuration of paddy field work machine]
FIG. 1 is a side view showing the entire paddy field working machine according to the present invention. FIG. 2 is a plan view showing the entire paddy field working machine according to the present invention.
As shown in FIGS. 1 and 2, the paddy field working machine according to the present invention is provided with a pair of left and right steering-operable front wheels 1F and 1F at the front portion of the traveling machine body 1, and left and right at the rear portion of the traveling machine body 1. It is provided with rear wheels 1R and 1R as a pair of driving wheels, and is configured to run on its own.
Power from the engine 20 provided in the driving portion 2 at the front of the fuselage is transmitted to the rear wheels 1R and 1R. The power of the engine 20 is the seedling planting connected to the fertilizer application device 4 mounted on the rear part of the traveling machine 1 and the rear part of the machine frame 10 of the traveling machine 1 via a link mechanism 11 capable of vertically swinging operation. It is also transmitted to the device 6.

The traveling machine body 1 is provided with a driving unit 3 on the rear side of the driving unit 2. In the driving unit 3, on the driving unit step 30, a steering unit 31 having a steering handle 31a or the like is arranged in the front, and a driver's seat 32 is arranged in the rear, and the driver's seat 32 is mounted on the driving unit 3 for maneuvering. It is configured to be possible. Below both lateral ends of the driving section step 30, a boarding / alighting step 35 used for boarding / alighting from the ground is provided.
As shown in FIG. 2, side step 22 connected to the front of the driving step 30 is provided on both left and right sides of the engine bonnet 21 in which the engine 20 is built in the driving section 2. It is configured so that it can be transferred from the front side of the machine body through this side step 22.
A spare seedling stand 12 is provided on the lateral side of the left and right side step 22 in the front portion of the traveling machine body 1.

A fertilizer hopper 40 of the fertilizer application device 4 is provided at the rear end of the traveling machine 1 in a state of being located on the back side of the driver's seat 32. The fertilizer hopper 40 stores powdered fertilizer and supplies a predetermined amount of powdered fertilizer through a feeding device (not shown) and a fertilizer application hose 41 to a groove-growing device 6 provided in a series of seedling planting devices 6 at the rear of the machine. It is configured to be sent to 42 and supplied to the field.

As shown in FIG. 2, the driver step 30 is formed so that the width in the left-right direction of the driver step 30 located in front of the driver's seat 32 is not constant, and different portions are formed in the front and rear. That is, the left-right width of the driver step 30 at a position closer to the rear near the driver's seat 32 is wider than the left-right width of the driver step 30 at a position closer to the front far from the driver's seat 32. As a result, there is a narrow portion 33 that is slightly narrower in the left-right direction at a position closer to the front side far from the driver's seat 32, and left and right at a position closer to the rear side closer to the driver's seat 32 than the narrow portion 33. There is a wide portion 34 having a wide directional width.
More specifically, the width in the left-right direction of the narrow portion 33 is about the same as or slightly wider than the distance between the outermost sides of the side step 22 existing on both sides of the driving portion 2. The wide portion 34 is wider than that, wider than the lateral width of the fertilizer hopper 40 of the fertilizer application device 4 arranged on the back of the driver's seat 32, and 10 rows of seedlings provided by the seedling planting device 6. The width is set so as not to exceed the width in the left-right direction of the seedling stand 60 having the placement portion 60a.

[Seedling planting device]
As shown in FIGS. 1 and 2, the seedling planting device 6 is connected to the rear part of the link mechanism 11.
The front end portion of the planting frame 61 of the seedling planting device 6 is connected to the rear portion of the link mechanism 11. Ten seedling planting mechanisms 62 mounted side by side in a row at the rear end of the planting frame 61, a seedling stand 60 provided above the front part of the planting frame 61, and planting. Five grounding floats 63 mounted side by side in the lateral direction of the traveling machine body are provided at the lower part of the attached frame 61.

The planting frame 61 includes five planting drive cases 24 arranged in a posture along the front-rear direction at predetermined intervals in the lateral direction of the traveling machine body. The front end portions of the planting drive cases 24 are connected by a horizontal frame (not shown) along the left-right direction. The ten seedling planting mechanisms 62 are attached to the planting frame 61 in a state in which one is movably supported on both lateral sides of the rear end portion of each planting drive case 24.
The seedling mounting table 60 is provided with 10 seedling placing portions 60a arranged side by side in the traveling machine body and configured to place mat-shaped seedlings. The seedling stand 60 is supported by a support column member provided on the planting frame 61 and is configured to be reciprocating in the lateral direction of the machine body. The seedling placing table 60 is reciprocated in conjunction with the seedling planting movement of the seedling planting mechanism 62, and seedlings are supplied to each seedling planting mechanism 62 from the seedling placing portion 60a. Each grounding float 63 is in contact with the field scene in the descending work state of the seedling planting device 6, and supports the seedling planting device 6 so that the seedling planting depth by each seedling planting mechanism 62 becomes a predetermined depth. Then, the seedling planting site is prepared by the seedling planting mechanism 62.

The rear part of the seedling planting device 6 is equipped with a chemical spraying device 64 for spraying the chemicals to the field after planting the seedlings.

[Marker device]
As shown in FIGS. 1 and 2, marker devices 5 are provided on both lateral sides of the front portion of the traveling machine body. Apart from the marker device 5, center markers 23 are provided at the left and right center points of the front end portion of the traveling machine body.
The marker device 5 is provided with a line marker 5A for forming a traveling target line for a subsequent stroke in a field and an adjacent marker 5B for using an adjacent strip as a traveling index.
During work running, a running target line is formed in the field scene by the line marker 5A on the side of the field scene of the traveling machine 1, and the work adjacent to the seedling planted place where the seedling planting by the work process is completed. When traveling on the target location, by aligning the center marker 23 with the previously formed travel target line, the seedlings lined up in the aircraft traveling direction of the planted seedlings according to the previous work process and this work It is possible to work in a state where the seedlings planted in the process are parallel to or almost parallel to the row of seedlings in the traveling direction of the machine.

The adjacent marker 5B is located below the line marker 5A, and has a laterally outward use posture in which the extending end is directed to the laterally outward side of the traveling machine 1 and an extending end is along the front-rear direction of the traveling machine 1. It is configured so that the posture can be switched to the retracted posture.
The adjacent marker 5B has a laterally outward use posture in which the extending end is directed to the laterally outward direction of the traveling machine body 1, and an instruction bar 81 whose vertical position can be changed is attached to the tip of the adjacent marker 5B. It is used when the traveling target line is difficult to see or when the traveling target line has not yet been formed by traveling the traveling machine 1 with the lower end aligned with the position of the planting strip or the ridge end surface. be able to.

The marker device 5 on the left and the marker device 5 on the right differ in that they project laterally outwardly from the traveling machine, but have the same configuration in other respects. Therefore, in the present embodiment, they have the same configuration. , The detailed structure of the marker device 5 on the right will be omitted.

As shown in FIGS. 3 to 7, the marker device 5 is attached to a support portion 14 made of a pipe frame, which is a lateral portion of the front portion of the traveling machine body and is provided over the driving portion step 30 and the side portion step 22. Has been done.
That is, on the lateral side surface of the support portion 14, a mounting bracket 15 formed in an inverted L-shaped cross section with a vertical piece 15a along the front-rear direction and a horizontal piece 15b extending laterally along the horizontal direction is formed. It is fixed by welding, and a connecting bracket 50 that supports the line marker 5A and the adjacent marker 5B is detachably attached to the mounting bracket 15.

As shown in FIGS. 4 and 7, the connecting bracket 50 is formed in a channel-shaped cross-sectional shape, and has an upper piece 50b protruding laterally and outward on the upper side of the vertical surface 50a along the front-rear direction, and the vertical surface 50a. It is provided with a lower piece 50c that projects laterally outward on the lower side.
The mounting bracket fixed to the support portion 14 by connecting and fixing the upper piece 50b of the connecting bracket 50 to the lower side of the lateral piece 15b of the mounting bracket 15 with a pair of front and rear connecting bolts 54 and 54. The connecting bracket 50 is detachably attached to the fifteenth.

[Installation of line marker]
The line marker 5A can swing left and right around the center y1 of the first vertical axis along the vertical direction, and is supported by the traveling machine body 1 and the tip of the support portion 52 with respect to the support portion 52. It is provided with an extension rod portion 53 provided in the portion and supported so as to be undulating and swingable around the first horizontal axis x1 along the horizontal direction.

A connecting boss 52a is provided at the end of the support portion 52 on the traveling machine body 1 side. The support portion 52 is first vertically connected by positioning the connecting boss 52a between the upper piece 50b and the lower piece 50c of the connecting bracket 50 and connecting and fixing the pivot connecting bolt 51 in a state of being inserted into the connecting boss 52a. It can be attached to the connecting bracket 50 so as to swing left and right around the axis y1.
As shown in FIG. 5, the attached support unit 52 has a lateral working posture PS extending laterally outward from the first vertical axis center y1 and a traveling machine body from the first vertical axis center y1. The posture can be switched between the forward storage posture PF extending forward along 1 and the backward storage posture PR extending diagonally backward from the first vertical axis center y1. The diagonally rearward posture of the support portion 52 in the rearward storage posture PR is to avoid interference with the wide portion 34 of the driving unit step 30.

At the tip of the support portion 52, that is, at the end portion of the support portion 52 opposite to the end portion on the side where the connecting boss 52a is provided, undulating swing around the first horizontal axis x1 along the horizontal direction. A horizontal connecting boss 52b is provided to support the extension rod 53 as much as possible.
By inserting and connecting the pivot connecting pin 55 to the lateral connecting boss 52b, the extending rod portion 53 is supported so as to be undulating and swingable around the first horizontal axis x1 along the horizontal direction.

The extension rod 53 is connected to an undulating operation mechanism 56 with a drive motor 56a. That is, the base bracket 53a of the extension rod portion 53 is connected to the operation arm 56b of the undulation operation mechanism 56 via the operation spring material 57, and the drive motor 56a is commanded to be raised by an operation switch or the like (not shown). When the lowering command is input, the operating arm 56b of the undulating operation mechanism 56 can rotate clockwise or counterclockwise to undulate and swing the extension rod 53.
A position holding spring 58 is hung over the base bracket 53a of the extension rod 53 and the outer case 56c of the undulation operation mechanism 56. This is because when the extension rod 53 is lifted to the retracted posture, the operating force of the drive motor 56a is lost, and the extension rod 53 is maintained in a state of being urged toward the inside of the machine. Used to do.

The tip portion of the extension rod portion 53 is provided with an arm portion 53b whose tip end side portion is formed in a bent shape, and a rotation marker 53c rotatably supported by the tip portion of the arm portion 53b.

[Installation of adjacent markers]
As shown in FIGS. 4 and 7, the adjacent marker 5B includes a rod-shaped member 80 and an instruction bar 81 that can be inserted and removed from the insertion hole provided at the tip of the rod-shaped member 80 and whose insertion length can be adjusted. ing.
The end of the rod-shaped member 80 on the traveling machine body 1 side is in contact with the lower side of the lower piece 50c of the connecting bracket 50, and together with the stopping member 82, the connecting bolt 83 is used in the horizontal direction around the second vertical axis center y2. It is supported so that it can swing.

As described above, by being connected to the lower side of the lower piece 50c of the connecting bracket 50, the entire rod-shaped member 80 excluding the indicator bar 81 has a movement locus around the first vertical axis center y1 of the line marker 5A. It is located below the outside. When the instruction bar 81 is pulled upward with respect to the rod-shaped member 80, it may interfere with the movement locus of the line marker 5A around the first vertical axis center y1.
However, the connecting positions of the rod-shaped member 80 with respect to the lower piece 50c of the connecting bracket 50 are formed at two positions in the front and rear of the lower piece 50c of the connecting bracket 50. As shown in FIG. 6, this connection position is located at a position where the front side and the rear side of the support portion 52 are displaced from each other in a plan view, so that either the front side or the rear side of the support portion 52 is connected. The rod-shaped member 80 can be selectively connected. As a result, the rod-shaped member 80 is rotated around the second vertical axis center y2 on the front side of the support portion 52 and stored in a forward posture, or the rod-shaped member 80 is moved on the rear side of the support portion 52 on the second vertical axis. It can be rotated around the center y2 and stored in a backward posture.

[Lock mechanism]
A lock mechanism 7 for fixing and releasing the selected mounting posture of the line marker 5A with respect to the traveling machine 1 is provided near the end of the line marker 5A on the side connected to the traveling machine 1.
The lock mechanism 7 includes an operation lever 70 attached to the support portion 52 of the line marker 5A, and a position fixing member 71 welded and fixed to the support portion 14 of the traveling machine body 1.

The operation lever 70 is attached to the support portion 52 that can swivel around the first vertical axis center y1 so as to be undulating and swingable around the second horizontal axis x2 in the direction intersecting the first vertical axis center y1. ing. That is, by grasping the operation lever 70 and pushing and pulling the operation lever 70 in the horizontal direction, the support portion 52 is swiveled around the center y1 of the first vertical axis, and the operation lever 70 is also the second along with the support portion 52. It is possible to perform a turning operation around one vertical axis center y1.
Then, when the gripped operation lever 70 is swung in the vertical direction, it swings up and down with respect to the support portion 52 around the second horizontal axis x2. By this undulating swing operation, the operation lever 70 can be engaged with and disengaged from the position fixing member 71.

The operation lever 70 is entirely composed of a rod-shaped bending rod. At the end of the operating lever 70 on the swing fulcrum side, there is a pivot portion 70a along the axial direction of the second horizontal axis x2, and this pivot portion 70a is attached to the upper surface of the support portion 52 as a bracket 52c. It is pivotally connected to.
A grip portion 70b having an upright posture is provided at an end portion of the operating lever 70 on the side farthest from the second horizontal axis x2. In this way, since the grip portion 70b is upright, the grip portion 70b can be gripped and the support portion 52 can be easily swiveled around the first vertical axis center y1 at a wide angle without the need for changing hands. Easy to do.
The intermediate rod portion 70c connecting the pivot portion 70a and the grip portion 70b of the operating lever 70 is configured to be disengageable from the engaging recesses a1 to a5 described later of the position fixing member 71. The spiral winding spring 74 (corresponding to the urging spring) that oscillates and urges the intermediate rod portion 70c downward to urge the engagement recesses a1 to a5 to deepen the engagement with the engaging recesses a1 to a5 is inside the bracket 52c. It is wound around the pivot portion 70a.

The position fixing member 71 is composed of a sheet metal member that is bent and formed in a channel shape in a plan view. The lower part of the sheet metal member is provided at a position along the front-rear direction of the support portion 14 which is bent and formed in a U shape in a plan view.
In the sheet metal member constituting the position fixing member 71, the channel-shaped open side is directed to the laterally outward side of the traveling machine body 1 in a plan view. Then, the first fixing member 72 is welded and fixed with the lower end portion straddling the portion along the front-rear direction of the support portion 14, and the channel-shaped open side is also directed to the laterally outward side of the traveling machine body 1 in a plan view. The second fixing member 73 is welded and fixed to the upper part of the first fixing member 72 in a state where the first fixing member 72 is embraced from the outside (the side inside the machine body).

A plurality of engaging recesses a1 to a5 that engage with the intermediate rod portion 70c of the operating lever 70 are provided on the upper end edge portion of the position fixing member 71.
These engaging recesses a1 to a5 are formed by a recessed groove having a depth into which the intermediate rod portion 70c of the operating lever 70 enters, and the operating lever 70 can be moved horizontally in the engaged state in which the intermediate rod portion 70c has entered. It is a limitation. By restricting the horizontal movement of the operating lever 70, a locked state is set in which turning is restricted around the first vertical axis center y1 of the support portion 52 of the line marker 5A. Then, when the intermediate rod portion 70c engaged with any of the engaging recesses a1 to a5 is removed from the engaging recesses a1 to a5, the lock is released and the first vertical axis of the support portion 52 of the line marker 5A is released. A turn around the center y1 is allowed.

Specifically, in FIGS. 4 to 7, as shown by the solid line in FIG. 5, the operation is performed in the forward retracted posture PF in which the support portion 52 of the line marker 5A is oriented forward along the front-rear direction of the traveling machine body 1. The intermediate rod portion 70c of the lever 70 engages with the engaging recess a5 to be in a locked state.
As shown by a virtual line in FIG. 5, in the backward retracted posture PR in which the support portion 52 of the line marker 5A is directed diagonally rearward of the traveling machine body 1, the intermediate rod portion 70c of the operating lever 70 engages with the engaging recess a5. It becomes locked.
As shown by a solid line in FIG. 6, in the lateral working posture PS in which the support portion 52 of the line marker 5A is directed to the laterally outward side of the traveling machine body 1, the intermediate rod portion 70c of the operation lever 70 is engaged with the engaging recess a2. It engages with two places with a3 and becomes locked.

In this sideways working posture PS, the engaging recesses a2 and a3 are engaged with the intermediate rod portion 70c of the operating lever 70 at a plurality of locations (two locations in the embodiment) separated from each other in the longitudinal direction of the intermediate rod portion 70c. do. By performing the work while keeping the intermediate rod portion 70c engaged at a plurality of locations separated in the longitudinal direction in this way, it is easy to stably maintain the work of forming the traveling target line by the line marker 5A. That is, even if a slight backward external force acts on the support portion 52 due to the resistance of the field to which the traveling target line is formed acts on the line marker 5A, the support portion 52 moves backward due to the influence of this external force. It is easy to avoid the risk of swinging to.

Of the engaging recesses a1 to a5 formed in the position fixing member 71, the engaging recesses a4 are temporarily diagonally forward of the machine body before or after changing the posture of the line marker 5A to the forward storage posture PF. It can be used in cases such as avoiding contact with other objects by making the posture facing.

[Spare seedling stand]
The spare seedling mounting table 12 is provided on both the left and right sides of the traveling machine 1 at the lateral outer position of the left and right side step 22. Gate-shaped stanchions 16 are erected on each of the left and right sides of the traveling machine 1, and the upper half of the stanchions 16 is equipped with a plurality of sapling pedestal portions 17, and the lowermost sapling pedestal portion 17 is provided. It has a structure that can be folded back and forth and unfolded, and is configured so that it can be arranged long in the front and back direction in the unfolded state.

As shown in FIG. 8, a mounting member 18 capable of fixing and releasing the vertical position with respect to the support column 16 is provided at the attachment point of the seedling placing table portion 17 at the lowermost stage for each of the gate-shaped columns 16. Each column 16 is formed with a fixing hole 16a through which a connecting bolt 19 for connecting the mounting member 18 and the column 16 at a plurality of upper and lower positions can be inserted. The stop holes 16a are formed at three or more locations along the vertical direction of the column 16 and are provided at equal intervals in the vertical direction of the column.

Therefore, when it is desired to change the vertical position of the mounting member 18 with respect to the support column 16 to change the height of the seedling mounting table portion 17, the insertion point of the connecting bolt 19 with respect to the stop hole 16a formed in the support column 16 is changed. By doing so, it can be easily changed. At this time, since the stop holes 16a are provided at three or more positions along the vertical direction of the support column 16 at equal intervals, the height of the seedling placing table portion 17 can be adjusted by using the stop holes 16a at the upper and lower two places. When setting, the stop hole 16a for inserting the connecting bolt that stops the lower side of the seedling mounting table portion 17 at the upper position is changed to the lower position for inserting the connecting bolt that stops the upper side of the seedling mounting table portion 17. It can also be used as a stop hole 16a. As a result, the number of stop holes 16a formed in the support column 16 can be reduced, and the man-hours for processing the stop holes 16a can also be reduced.

The left and right spare seedling mounting tables 12 are provided with a mounting frame 26 for the communication antenna 25 in a state where the upper portions of the left and right columns 16 and 16 are connected to each other.
This communication antenna 25 is used for communication of the "Global Navigation Satellite System (GNSS)", and is a spare seedling stand at the highest position of the traveling aircraft 1 during work. It is arranged higher than the top of the twelve.
The mounting frame 26 of the communication antenna 25 is rotatably connected to the upper portions of the left and right columns 16 and 16 around the horizontal axis x3 along the left-right direction, and is shown in solid lines in FIGS. 1 and 3. As shown by, the communication antenna 25 was folded so as to be lower than the standing posture by inverting it backward and downward as shown by the virtual line and the standing posture in which the communication antenna 25 was positioned higher than the top of the spare seedling stand 12. It is configured so that the posture can be switched between the lying posture and the lying posture.

Then, as shown in FIGS. 1 and 3, the top of the line marker 5A is set in the forward storage posture PF of the line marker 5A in which the extension rod 53 is erected with respect to the support portion 52, or in the backward storage posture PR. , Set the relative height between the spare seedling stand 12 and the top of the line marker 5A so that the mounting frame 26 of the communication antenna 25 is located lower than the top of the spare seedling stand 12 in which the mounting frame 26 is switched to the lying position. be.

[Another Embodiment]
Hereinafter, another embodiment will be described. A plurality of the following different embodiments may be used in combination as long as there is no contradiction. The scope of the present invention is not limited to the contents of these embodiments.

(1) In the above-described embodiment, a paddy field having a structure in which both a line marker 5A for forming a traveling target line for a subsequent stroke in a field and an adjacent marker 5B for using an adjacent row as a traveling index are provided side by side. Although the working machine is illustrated, the adjacent marker 5B may be omitted and only the line marker 5A may be provided.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

(2) In the above-described embodiment, the line marker 5A for forming the traveling target line for the subsequent stroke in the field and the adjacent marker 5B for using the adjacent strip as the traveling index are attached to the common connecting bracket 50. The line marker 5A and the adjacent marker 5B may be individually attached to the traveling machine body 1 or may be attached to a place separated from each other in the front-rear direction. ..
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

(3) In the above-described embodiment, the lock mechanism 7 is configured by using the operation lever 70 and the position fixing member 71, and in the forward storage posture PF and the backward storage posture PR, the position fixing engagement point is one place. The lateral working posture PS exemplifies a structure in which there are two engaging points for fixing the position, but the structure is not necessarily limited to this structure.
For example, the engagement points for fixing the position in the sideways working posture PS may be set to one place, or may be set to a plurality of three or more places. Further, a plurality of engagement points may be set in the forward storage posture PF and the backward storage posture PR.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

(4) In the above-described embodiment, the position change due to the swing around the first vertical axis center y1 of the line marker 5A is preset by the forward storage posture PF, the backward storage posture PR, and the sideways working posture PS. An example of a structure that can be performed in three places is illustrated, but the structure is not necessarily limited to this structure.
For example, the engaging recesses a1 to a5 in the position fixing member 71 are not limited to the three locations around the center of the first vertical axis y1, but are included in a large number of locations including a forward storage posture PF, a backward storage posture PR, and a lateral working posture PS. It may be formed so as to allow a change in posture to, so that the position can be fixed at an arbitrary angle around the center y1 of the first vertical axis.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

(5) In the above-described embodiment, as the lock mechanism 7, the operation lever 70 for changing the position around the first vertical axis center y1 of the line marker 5A is also used as a constituent member of the lock mechanism 7. However, the structure is not necessarily limited to this structure.
For example, in addition to the operating lever 70, another member that is locked to the engaging recesses a1 to a5 of the position fixing member 71 may be used, and the structure may be used in combination with the operating lever 70. May be good.
For other configurations, the same configurations as those in the above-described embodiment may be adopted.

The present invention can be used not only for a paddy field working machine equipped with a seedling planting device 6 but also for a paddy field working machine equipped with a direct sowing device.

1 Traveling machine 5A Line marker 5B Adjacent marker 7 Lock mechanism 12 Spare seedling mount 15 Mounting bracket 16 Strut 16a Stop hole 17 Seedling mount part 18 Mounting member 19 Connecting bolt 25 Communication antenna 30 Driver step 32 Driver's seat 33 Narrow Part 34 Wide part 52 Support part 53 Extension rod 70 Operation lever 74 Bounce spring a1 to a5 Engagement recess y1 First vertical axis center x1 First horizontal axis center y2 Second vertical axis center x2 Second horizontal axis center PF Forward storage posture PR Backward storage posture PS Sideways working posture

Claims (10)

A driver's seat is provided on the passenger-type traveling aircraft,
A line marker for forming a traveling target line for the rear stroke in the field is provided at a position on the side of the aircraft in front of the driver's seat.
The line marker is supported by the traveling machine body so as to swing left and right around the center of the first vertical axis along the vertical direction, and the first along the horizontal direction provided at the tip of the support portion. It is equipped with an extension rod that is supported so that it can swing up and down around the center of the horizontal axis.
The support portion has a lateral working posture extending from the center of the first vertical axis toward the lateral side of the traveling machine and a forward direction extending forward along the center of the first vertical axis from the center of the first vertical axis. A paddy field work machine configured to be switchable between a retracted posture and a rearward retracted posture extending rearward from the center of the first vertical axis. An operation lever that can rotate around the center of the first vertical axis is attached to the support portion at the base end portion on the side opposite to the tip portion where the extension rod portion is provided, integrally with the support portion. At the same time, the operation lever is mounted on the support portion so as to be undulating and swingable around the center of the second horizontal axis in the direction intersecting the center of the first vertical axis.
It is possible to engage the traveling machine with the operation lever that is undulated and swung around the second horizontal axis center to regulate the turning of the support portion around the first vertical axis center. A joint recess is provided,
The paddy field working machine according to claim 1, wherein a lock mechanism capable of fixing and releasing the posture of the support portion with respect to the traveling machine body is configured by the operation lever and the engaging recess. The paddy field working machine according to claim 2, wherein the lock mechanism is formed with a plurality of engaging recesses so as to engage with the operating lever at a plurality of locations in the longitudinal direction of the operating lever in the lateral working posture. .. The paddy field working machine according to claim 2 or 3, further comprising an urging spring that urges the operating lever that can undulate and swing around the center of the second horizontal axis to the side that engages the engaging recess. Among the driver's step of the traveling machine, the driver's step on the front side of the driver's seat includes a wide part on the rear side near the driver's seat and a narrow part on the front side far from the driver's seat. Is formed,
The first vertical axis core of the line marker is provided on the lateral side of the narrow portion, and the support portion in the forward retracted posture is located on the center side of the machine body with respect to the lateral width of the wide portion. The paddy field working machine according to any one of claims 1 to 4, which is configured in the above. On the lateral side of the aircraft in front of the driver's seat, an adjacent marker for using the adjacent strip as a traveling index is provided at a position below the movement locus of the line marker around the center of the first vertical axis. The paddy field working machine according to any one of claims 1 to 5. The adjacent marker is supported by a mounting bracket for attaching the support portion to the traveling machine body, and is around the second vertical axis center along a vertical direction different from the first vertical axis center, and is the line marker. The paddy field working machine according to claim 6, which is separately configured to be swingable from side to side. 6. The adjacent marker is configured to be selectively pivotally connectable to a plurality of positions of the line marker on the front side and the rear side of the center of the first vertical axis. Or the paddy field working machine described in 7. Spare seedling stands were erected on both the left and right sides of the traveling machine.
A communication antenna is provided on the upper part of the spare seedling stand.
The communication antenna is configured to be switchable between an upright posture located higher than the top of the spare seedling stand and a prone posture folded so as to be lower than the upright posture.
A claim in which the top of the extension rod of the line marker in the forward storage posture and the backward storage posture is lower than the top of the spare seedling stand in the state where the communication antenna is in the tilted posture. The paddy field working machine according to any one of Items 1 to 8. The spare seedling stand is provided with columns erected on both the left and right sides of the traveling machine, and a seedling platform portion supported by the columns.
The seedling mounting table portion is provided with a mounting member capable of fixing and releasing the vertical position with respect to the support column.
A connecting bolt for connecting the mounting member and the support column at a plurality of upper and lower points is provided.
Stop holes through which the connecting bolts can be inserted are formed at three or more locations along the vertical direction of the column.
The paddy field working machine according to claim 9, wherein the stop holes are provided at equal intervals in the vertical direction of the column.

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