JP2023001467A - Working vehicle - Google Patents

Abstract

To provide a working vehicle having improved operability and workability by indicating travel scheduled positions where front and rear wheels pass and a border between a worked area where weeding work is performed by a paddy-field working vehicle and a not-worked area to an operator who performs the weeding work while watching a front side in a working vehicle including a paddy-field weeding machine which performs weeding work to a paddy-field where planting work has been performed.SOLUTION: A working vehicle includes: a travelling machine body which is supported by front wheels and rear wheels; a paddy-field weeding machine which is supported to a rear side of the travelling machine body; and a marker unit which assists an operator operating the travelling machine body when performing weeding travel using the paddy-field weeding machine. The marker unit includes a wheel marker indicating travel scheduled positions where the wheels pass when performing weeding work while making the travelling machine body travel straightly, and a border between a worked area by the weeding machine and a not-worked area.SELECTED DRAWING: Figure 2

Description

The present invention relates to a working vehicle equipped with a paddy field weeder.

Equipped with a traveling body supported by front wheels and rear wheels, and a paddy field weeder supported on the rear side of the traveling body, weeding the paddy field by traveling in a field while the paddy field weeder is in operation. 2. Description of the Related Art A work vehicle described in Patent Document 1 that can perform work is conventionally known.

According to the work vehicle of the above document, it is possible to efficiently weed the adjacent seedlings in a field where planting work has been completed by the paddy weeder. Since it is difficult to grasp the position where the wheels of the traveling machine pass, the wheels may step on the seedlings, and it is difficult to grasp the working width of the paddy field working machine when it turns and travels toward the adjacent work row. Therefore, there is a problem that it is easy to make a mistake in the approach route.

JP 2012-125214 A

The present invention provides a work vehicle equipped with a paddy field weeder for weeding a paddy field in which planting work has been performed. An object of the present invention is to provide a working vehicle with improved operability and workability by indicating the boundary between a working area where weeding work is performed by a paddy field working machine and an unworked area.

In order to solve the above problems, the present invention firstly comprises a traveling machine body supported by front wheels and rear wheels, a paddy field weeder supported on the rear side of the traveling machine body, and a weeding machine using the paddy field weeder. and a marker unit for assisting an operator who operates the traveling machine body when performing weeding work while the traveling machine machine travels straight ahead. It is characterized by having a marker and a work marker indicating a boundary between a work area and an unwork area by the weeding machine.

Secondly, the marker unit is supported by a single support frame provided on the front end side of the traveling body.

Thirdly, the support frame extending in the left-right direction is formed so that its left-right width is approximately the same as the width of the left and right wheels when viewed from the front, and the marker units are provided on both end sides of the support frame. The present invention is characterized in that the wheel marker and the work marker are rotatably supported so that their attitudes can be switched.

Fourthly, the wheel markers can be switched between an operating posture in which the pair of left and right wheel markers are projected forward so as to be parallel along the front-rear direction of the traveling body in a plan view, and a retracted posture. The work marker is supported so as to be rotatable forward and backward, and the work marker can be switched between an operating posture in which a pair of left and right work markers protrude forward in a V shape that widens forward in a plan view, and a retracted posture. and the marker unit is configured such that when the wheel marker and the work marker are switched to the working posture, front end positions of the respective markers are aligned in a plan view. there is

According to the marker unit, the wheel marker for aligning the traveling position when weeding work is performed while traveling straight using the paddy weeder, and the weeding work is restarted when the weeder turns to an adjacent work row. Since the work can be traveled while visually recognizing the work marker for positioning at the same time, operability and workability during weeding work are improved.

Further, if the marker unit is supported by a single support frame provided on the front end side of the traveling machine body, the wheel marker and the work marker can be collectively supported by the support frame. Installation work of the unit can be easily performed.

Further, the support frame extending in the left-right direction is formed so that the width thereof is approximately the same as the width of the left and right wheels when viewed from the front, and the marker units are provided on both end sides of the support frame. and the work marker are rotatably supported so that their postures can be switched, each marker can be accommodated within the width of the traveling machine body.

In addition, the wheel markers are arranged so that the pair of left and right wheel markers can be switched between an operating posture in which the pair of left and right wheel markers are parallel to each other along the front-rear direction of the traveling body in a plan view, and a retracted posture. The work markers are rotatably supported, and the work markers can be moved forward and backward so that they can be switched between an action posture in which a pair of left and right work markers protrude forward in a V shape that widens forward in a plan view, and a retracted posture. The marker unit is rotatably supported, and the marker unit is configured such that when the wheel marker and the work marker are switched to the active posture, front end positions of the respective markers are aligned in plan view. Since it becomes easy to understand that the marker has been set to the working posture, it becomes easy to switch the posture.

1 is an overall side view of a paddy field weeding vehicle to which a working vehicle to which the present invention is applied; FIG. 1 is an overall plan view of a paddy field weeding vehicle to which a work vehicle to which the present invention is applied; FIG. FIG. 4 is a model diagram showing a work route when weeding a paddy field using a marker uni;

FIG. 1 is an overall side view of a paddy field weeding vehicle to which a work vehicle to which the present invention is applied, and FIG. 2 is an overall plan view of a tractor showing the paddy field weeding vehicle. The illustrated paddy field weeding vehicle (hereinafter referred to as a weeder) has a traveling body 3 having a pair of left and right front wheels 1, 1 and rear wheels 2, 2; and a weeding machine (paddy field weeder) 6 connected to.

The traveling body 3 includes a bonnet 7 surrounding an engine (not shown) disposed on the front side of the body frame 5, a pair of left and right front steps 20 provided on the left and right sides of the hood 7, and the hood 7. A control unit 8 arranged behind the bonnet 7 for an operator to get on, a center marker 9 supported in front of the bonnet 7 (running body 3) and indicating the left and right center side of the running body 3, and in front of the bonnet 7 A marker unit 10 is provided which is supported and indicates a wheel passing position of the traveling body and a work area where weeding work is performed by the weeding machine. Details of the marker unit 10 will be described later.

The operation unit 8 includes a seat 11 on which an operator sits, a steering handle 12 provided in front of the seat 11, and a main gear shift lever arranged on one of the left and right sides of the steering handle 12 (the left side in the example shown). 13 and a working machine lever 14 arranged on the other left and right side (the right side in the illustrated example) of the steering handle 12 .

The working machine lever 14 can operate the lifting operation of the weeding machine 6 which is connected to the rear part of the traveling machine body 3 via a lifting cylinder 15 so as to be able to move up and down.

The weeding work machine 6 includes a work machine side hitch frame 16 for connecting to a hitch on the rear end side of the lifting link 4, a main frame 21 extending in the left-right direction, and supported by the main frame 21 side. a pair of side floats 23 arranged side by side on the left and right sides of the sensing float 22; and a weeding rotor (weeding body) 24 supported on the rear side of the main frame 21. , and a marker device 25 for marking the driving reference line on the adjacent work row.

In addition, the weeding machine 6 moves up and down in response to the back-and-forth swinging operation of the working machine lever 14, and during the weeding work by the weeding machine 6, the sensing float 22 detects the field pressure. According to the detection of the surface, the elevation height of the weeding machine 6 can be automatically adjusted as appropriate to a height position suitable for weeding work.

The weeding rotor 24 includes a pair of left and right front and rear frames 26, 26 extending rearward from the main frame 21, a lateral drive shaft 27 axially supported between the pair of front and rear frames 26, and the drive shaft A weeding body (weeding brush body) 28 radially provided around 27 for weeding a field (paddy field), and a front-rear direction transmission case 29 for transmitting power transmitted from the traveling body 3 to the drive shaft side. and a cover body 31 covering the entire upper side of the drive shaft 27 (weeder 28), and the weeder 28 rotationally driven around the drive shaft 27 can weed weeds in a field. is configured as

The front and rear frames 26, 26 are respectively supported on the left and right ends of the main frame 21, and a shaft support for supporting the drive shaft 27 is provided on the rear side (see FIG. 2, etc.).

The drive shaft 27 is a shaft member that is pivotally supported behind the main frame 21, and is configured by arranging a plurality of shaft members in a straight line along the main frame 21 in the horizontal direction. It is

The left and right inner sides of each drive shaft 27 are supported by being connected to the output shaft in the transmission case 29, while the left and right outer sides of each drive shaft 27 are supported by the shaft support. there is

The weeding body 28 has a cylindrical exterior portion 28a that is fitted to the drive shaft 27, and brush portions 28b that are radially provided from the outer peripheral surface of the exterior portion 28a about the drive shaft in a side view. are doing. According to this configuration, the operation of attaching and detaching the entire weeding body 28 to and from the drive shaft 27 is facilitated, so maintenance such as cleaning and replacement is improved.

Incidentally, the weeding rotor 24 has a main rotor 24A extending to a width approximately equal to that of the main frame 21 in a plan view, and is detachably provided on the right and left outer sides of the main rotor 24A. It is composed of a pair of extension rotors 24B, 24B that are adjustable in lateral width.

According to this configuration, the weeding machine 6 is equipped with the extension rotors 24B attached to both the left and right ends of the main rotor 24A, so that, in the example shown in the figure, eight planted rows in the left and right direction are weeded at once. On the other hand, by removing the extension rotors 24B from both the right and left ends of the main rotor 24A, the weeding operation can be performed on six planted rows in the left and right direction at once. .

According to the weeding machine 6, the weeding rotor 24 (weed killer 28) can weed the weeds that have grown between the fields (including the edges of the seedlings) without digging up the seedlings planted in the field. can be done. The weeding rotor 24 is not limited to the configuration described above, as long as the weeding rotor 24 is capable of weeding between a plurality of rows of seedlings in the left-right direction in a single work run.

According to the above-described configuration, the work vehicle performs work traveling (weeding) by aligning the center marker 9 with the traveling reference line formed by the marker device 25 , while adjoining by the marker device 25 . A travel reference line is formed (marked) on the work row to be carried out, and after turning travel, the center marker 9 is aligned with the travel reference line (weeding), and work travel can be resumed. By repeating this, the weeding work can be smoothly performed on the entire field.

At this time, the work vehicle uses the marker unit 10 to indicate the planned travel position through which the front and rear wheels 1 and 2 pass during the weeding work and the working width of the weeding machine 6 in the left-right direction (work width for the weeding work). The boundary between the work area and the non-work area) can be shown to the operator who is operating the control section 8 . A specific configuration of the marker unit 10 will be described below.

Next, the marker unit will be explained based on FIGS. 1 to 3. FIG. FIG. 3 is a model diagram showing a work route when weeding a paddy field using a marker unit.

The marker unit 10 includes a horizontal base frame 36 attached and fixed to the lower surface of the body frame 5 and a pair of left and right support arms extending from the base frame 36 toward the front end side of the traveling body 3 . 37, 37, a support frame 38 in the left-right direction fixed to the front end side of the support arm 37, and a pair of wheel markers 39, 39 provided on the left and right end sides of the support frame 38 so as to be able to switch their attitudes. work markers 41, 41 (see FIGS. 1 and 2).

The base frame 36 is composed of a bracket 36A provided on the lower surface side of the front portion of the body frame 5, and a rod-shaped frame member 36B that is attached and fixed to the bracket 36A and extends in the left-right direction. The left and right ends of the frame member 36B are bent upward to form a U-shape with an open top (see FIGS. 1 and 2).

The support arm 37 has its rear end (base end) side supported by the frame member 36B (base frame 36) side, while the support frame 38 is attached and fixed to its front end side. Also, the pair of support arms 37, 37 are provided on the left and right sides centering on the center pole 9 in a front view (plan view), and are arranged on the left and right outside of the bonnet 7 (in other words, directly below the front step 20). side) (see FIG. 2).

In addition, the support arm 37 extends forward from the base frame 36 side in a side view so as to be substantially parallel to the body frame 5 toward the front. (front part side) is bent obliquely upward. Thereby, the support arm 37 is configured such that the front end side thereof is arranged near the front of the body frame 5 (bonnet 7). In other words, the support arm 37 is configured to attach and fix the support frame 38 near the front of the body frame 5 (bonnet 7).

The support frame 38 is a left-right rod-shaped member supported near the front side of the body frame 5 (bonnet 7) by being attached and fixed to the front end sides of the pair of left and right support arms 37, 37, The left and right width is substantially the same as the width (tread width) of the pair of left and right front wheels (and rear wheels) when viewed from the front (plan view) (see FIG. 2).

The wheel marker 39 includes rod-shaped wheel marker support arms 39a, 39a supported on both left and right ends of the support frame 38 so as to be able to rotate left and right, and a marker portion attached to the swinging side of the wheel marker support arm 39a. 39b, and a pair of wheel markers 39, 39 (wheel marker support arms 39a, 39a) project straight forward along the longitudinal direction of the aircraft so that they are parallel in plan view. and a retracted posture in which a pair of wheel markers 39, 39 (wheel marker support arms 39a, 39a) are horizontally rotated left and right inward along the front part (the support frame 38) of the traveling body 3. configured as possible.

The marker portion 39b of the wheel marker 39 is a rod-shaped marking member fixed to the swing end side of the wheel marker support arm 39a so as to be perpendicular to the ground (body frame 5), It is provided so as to protrude downward from the swinging end of the wheel marker support arm 39a.

According to this configuration, the wheel marker 39 is switched to the active posture, so that the operator who is steering the steering unit 8 can detect the wheel (front wheel) when the traveling body 3 is caused to travel straight ahead and rear wheels) to pass through (the tread width of the left and right wheels).

According to this, as shown in FIG. 3, the operator can smoothly and easily check the tread width of the wheel when weeding work, so that the seedlings planted in the field (paddy field) by the wheel can be Therefore, it is possible to more efficiently prevent the situation of trampling on the row).

In addition, since the wheel markers 39 are folded toward the front end side of the traveling machine body 3 along the support arms 38 by being switched to the retracted posture, the wheel markers 39 can be positioned across the width of the traveling machine body 3 and the front and rear sides of the traveling machine body 3 . It can be stored in a wide width. At this time, the wheel marker 39 projects downward from the swinging end side of the wheel marker support arm 39a, so that the wheel marker 39 (marker portion 39b) in the retracted posture moves the traveling body 3. It is possible to prevent the operator from entering the field of view and becoming an obstacle during the steering operation.

The work marker 41 includes rod-shaped work marker support arms 41a, 41a supported on both left and right ends of the support frame 38 so as to be able to rotate left and right, and a marker provided on the swing end side of the action marker support arm 41a. a pair of work markers 41, 41 (work marker support arms 41a, 41a) protruding in a V shape that widens forward in a plan view; , 41 (work marker support arms 41a, 41a) are horizontally (forward and backward) rotated laterally outward along the side surface of the traveling machine body 3 (the side of the front step 20). is configured (see FIG. 2).

The marker portion 41b of the work marker 41 is a rod-shaped marking member fixed to the swing end (tip) side of the work marker support arm 41a so as to be perpendicular to the ground (body frame 5). It is provided so as to protrude upward from the swing end side of the work marker support arm 41a. As a result, the operator who is performing the steering operation with the control unit 8 can more easily visually recognize (the marker portion 41b of) the work marker 41 in the working posture, which is arranged on the left and right outside of the vehicle marker 39 in the working posture. Therefore, the wheel marker 39 and the work marker 41 are likely to come into view at the same time during the steering operation.

According to this configuration, the work marker 41 is switched to the working posture, so that when the operator who is steering with the control unit 8 performs the weeding work while traveling straight ahead as it is, The working width in which the weeding work is performed by the weeding machine 6 (the lateral width of the weeding machine 6), in other words, the work area in which the weeding work is performed by the weeding machine 6 and the weeding work by the weeding machine 6 can indicate a boundary with an unworked area where

According to this, as shown in FIG. 3, the operator aligns the edge of the weeding machine 6 with the edge of the (weeding) unworked area when turning to the adjacent work row. can be done smoothly and easily.

When the number of rows (working width) in which the weeding work is performed by the weeding machine 6 is changed, the work markers 41 are arranged such that the pair of left and right work markers 41, 41 are opened in the operating posture in accordance with this change. By adjusting the condition, it is possible to adjust the position indicating the boundary between the work area and the non-work area.

Specifically, for example, when the working width for weeding work by the weeding work machine 6 is changed from 8 rows on the left and right sides of the planted seedlings to 6 rows on the left and right sides, the operation posture is set accordingly. By rotating to reduce the distance between (the marker portions of) the pair of left and right work markers, the work markers 41 mark the boundary between the work area and the non-work area when weeding work for six rows is performed. can be shown.

Further, since the work marker 41 is folded along the front step 20 to the side portion of the traveling machine body 3 by being switched to the retracted posture, the work marker 31 can be positioned in the lateral width and the front-rear width of the traveling machine body 3 . It can be stored in a state in which it is stored.

In the marker unit 10 described above, when the wheel marker 39 and the work marker 41 are switched to the active posture, the front end positions of the wheel marker 39 and the work marker 41 are substantially the same in side view (the work arm is supported more than the wheel marker support arm 39a). 1 to 3). According to this configuration, when the marker unit 10 is switched from the retracted posture to the working posture, the switching of each marker to the working posture becomes easy, and the operator is notified when the switching of each marker to the working posture is completed. becomes easier to grasp.

The marker unit 10 is unitized by providing the wheel markers 39, 39 and the work markers 41, 41 on both left and right ends of the single support frame 38 extending in the left-right direction. ing. For this reason, the marker unit 10 can be easily attached to the traveling body 3 side, and the maintenance work involving attachment and detachment can be performed smoothly and easily.

Incidentally, the wheel marker 39 and the marker portions 39b and 41b of the work marker 41, which constitute the marker unit 10, may be configured to extend vertically from the swing ends of the marker support arms 39a and 41a. .

1 front wheel 2 rear wheel 3 traveling body 6 weeding machine (paddy field weeding machine)
REFERENCE SIGNS LIST 10 marker unit 38 support frame 39 wheel marker 41 work marker

Claims (4)

A running body supported by front wheels and rear wheels;
a paddy field weeder supported on the rear side of the traveling body;
a marker unit that assists an operator who operates the traveling body when weeding traveling using the paddy weeder;
The marker unit includes a wheel marker that indicates a planned travel position through which the wheels pass when weeding work is performed while the traveling machine body travels straight, and a boundary between an area that has been worked by the weeding machine and an area that has not been worked by the weeding machine. A work vehicle having a work marker. The work vehicle according to claim 1, wherein the marker unit is supported by a single support frame provided on the front end side of the traveling machine body. The support frame extending in the left-right direction is formed so that the width thereof is approximately the same as the width of the left and right wheels when viewed from the front,
The work vehicle according to claim 2, wherein the marker unit is configured such that the wheel marker and the work marker are rotatably supported on both end sides of the support frame so that attitudes of the wheel marker and the work marker can be switched. The wheel markers are rotated back and forth so that they can be switched between an operating posture in which the pair of left and right wheel markers are parallel to each other along the longitudinal direction of the traveling machine body in a plan view, and a retracted posture. supported as possible,
The work markers are rotatably supported back and forth so that they can be switched between an operating posture in which a pair of left and right work markers protrude forward in a plan view in a V shape that widens forward and a retracted posture,
The work vehicle according to claim 3, wherein the marker unit is configured such that front end positions of the respective markers are aligned in plan view when the wheel marker and the work marker are switched to the working posture.

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