JP2001078510A - Operational structure of working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the subject structure capable of easily carrying out the switching operation of a working state of a marker or the operation of a working clutch by constituting to carry out the switching operation of the working state of the marker and the operation of the working clutch by a specific method. SOLUTION: In an operational structure of a working vehicle constructed by linking a working machine 2 to a traveling machine body to be liftable and capable of transmitting a power to a working mechanism 10 through a working clutch 8 and installing a marker 12 for drawing a travel indication on a working ground of a subsequent working process, the operational structure is constituted by installing an operation device 31 below the steering handle 32 of a machine body-steering unit 46 and carrying out the switching operation of a working state of the marker 12 and the operation of the working clutch 8 by the operation device 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a construction in which a seedling planting device is connected to a traveling machine so as to be able to move up and down freely, and power is transmitted from the traveling machine body to the seedling planting device via a work clutch. An operation state in which a drawing marker for drawing a running index in a field scene in a next work process can be set to an operation posture of projecting outward on both sides of the seedling planting device, and a storage state in which the drawing marker is held in a posture of retreating inside the machine. The present invention relates to an operation structure of a rice transplanter provided to be switchable.

[0002]

2. Description of the Related Art Conventionally, in the rice transplanter described above, a switching operation tool for selectively switching one of the left and right line drawing markers to an active state by performing a forward / reverse operation from a neutral position is provided. It has been considered that the work clutch is engaged and operated in conjunction with the selection operation of either the left or right drawing marker of the operating tool.

[0003]

The operation structure as described above is such that, in this type of rice transplanter, the raising and lowering operation of the seedling planting apparatus, the drawing marker, Since multiple simultaneous operations such as selection operation of a work clutch and on / off operation of a work clutch are required, the operation tools of a plurality of target devices [work clutch and drawing marker] which are switched according to a change in work state are used, thereby improving operability. However, there are the following disadvantages.
That is, when the planting operation is performed by reciprocating traveling in the field, the above configuration improves the operability and is convenient, but when the reciprocating traveling operation in the field is completed, the planting operation on the headland is performed. However, since there are ridges and planted seedlings on the left and right sides of the airframe, a line marker cannot be used. In such a case, if the work clutch is engaged and operated by the dual-purpose operating tool, the drawing marker may be erroneously switched to the working posture, which may damage the seedling or damage the drawing marker itself. Was. An object of the present invention is to eliminate the above disadvantages.

[0004]

According to a feature of the present invention, in the operation structure of the rice transplanter described at the beginning, each of the drawing markers is operated by a forward / reverse swing operation in a predetermined direction from a neutral position on a control section of the traveling body. And an operating tool for selectively operating the working clutch by selectively switching any one of the above to the operating state and performing a swing operation in a direction intersecting the predetermined direction.

[0005]

By operating the operating tool forward or backward from the neutral position in a predetermined direction, a selection can be made to switch either the left or right drawing marker to an operating state, and by swinging in a direction intersecting the predetermined direction. Since the work clutch can be engaged and operated, the operating tools can be used together, and the operability can be improved without the hassle of switching multiple operating tools, etc. In addition, the switching operation can be performed independently, and operation errors can be reduced.

[0006]

Therefore, by making the operation tool common, it is possible to substantially simultaneously perform the selection operation for switching the drawing marker and the operation for engaging the work clutch, thereby improving the operability. The present invention has provided an operation structure of a rice transplanter that can perform a single operation of the rice transplanter, can prevent operation errors beforehand, and can reduce the risk of damage to already planted seedlings, drawing markers, and the like.

[0007]

Embodiments will be described below with reference to the drawings. FIG.
As shown in FIG. 1, a riding type rice transplanter is constructed by connecting a seedling planting device 2 to a rear portion of the riding type traveling machine body via a link mechanism 1 so as to be able to move up and down. The power of the engine 3 mounted on the front of the traveling body is provided by the belt transmission 4 and the transmission case 5.
The transmission system is configured to be transmitted to the front and rear wheels 6 and 7 and the seedling planting device 2 via the power transmission mechanism.

The seedling planting apparatus 2 includes a seedling stand 9 on which seedlings for planting are placed and reciprocally moved laterally, and a planting mechanism 10 for taking out seedlings one by one from the lower end of the seedling stand 9 and planting them in a field. A grounding float 11 that slides on the mud surface, and a drawing marker 12 on both left and right sides for drawing a line groove on the mud surface as a running index for the next work process along with the work traveling.
Is provided so as to be able to move in and out freely. The planting mechanism 10 mounts planting claw support cases 15, 15 which are relatively rotated based on set characteristics on both sides of a rotating case 14 which is driven to rotate about a horizontal axis with respect to the planting transmission case 13. , This case 1
The seedlings are planted by the respective planting claws 16, 16 arranged at the respective sections 5, 15.

The work clutch 8 is configured to be turned on and off by an electric motor 17, and when the clutch 8 is turned off, the planting claw support cases 15, 15 have substantially the same ground height. It is configured as a fixed-position stop type that is stopped at a predetermined rotation phase so as to reduce the risk of damage to the planting claws during non-working travel.
That is, as shown in FIG. 4, the work clutch 8 is configured such that the input gear 19 is fitted over the free end of the transmission shaft 18 to the seedling planting device 2 and the shift member 20 is fitted over the spline. An occlusal portion 21 is formed between the occlusal portion 20 and the occlusable portion 20. Then, the shift member 20 is biased by a spring in a direction of engagement, that is, biased by a clutch, and the shift member 20 is cut by a shift fork 24 via a gear reduction mechanism 22 and a push / pull rod 23 by an electric motor 17. I have. A stroke absorbing spring 25 is interposed in the middle of the linking of the push / pull rod 23. The shift fork 24 is configured so that the shift member 20 can be operated only when the transmission shaft 18 is at a predetermined rotational phase during the clutch disengagement operation.
That is, the contact portion 24 integrally formed with the shift fork 24
As shown in FIG. 5, the engagement recess 26 formed in the large-diameter flange portion 20a of the shift member 20 with a predetermined rotation phase, as shown in FIG.
The engagement restriction portion Q for the engagement portion 24a in the engagement concave portion 26 is formed thick so that the clutch release operation by the electric motor 17 can be performed at a low speed. Even so, the clutch disengagement operation can be performed reliably.

As shown in FIG. 3, each of the drawing markers 12, 12 is rotatable around a longitudinal axis X1 between an operating position protruding laterally outward and a retracted position retracting inward. It is supported by the frame 27, and is configured to be biased to project and rotate toward the working posture by a spring 28,
In accordance with the raising operation of the seedling planting device 2, the forcible storage is performed via the wire 29 based on a change in the relative posture between the seedling planting device 2 and the link mechanism 1. In addition, even if the seedling planting device 2 is lowered, the lock mechanisms 30, 30 for locking and holding the respective drawing markers 12, 12 in the stored state are separately provided,
By selectively unlocking the lock mechanisms 30, 30, either of the left and right drawing markers 12, 12 can be switched to the operating posture. The operation tool 31 for performing the selection operation is provided below the operation handle 32 in the aircraft operation section 46. As shown in FIG. 2, the operation tool 31 is integrally rotated by a different diameter fitting to a rotation support shaft 35 rotatably supported around a vertical axis Y on a bracket 34 fixed to the handle post 33. A gripping portion 36 is linked to the pivot shaft 35 so as to be freely and vertically rotatable, and an arm 37 integrally formed with the pivot shaft 35 is supported by the bracket 34 so as to be rotatable around the horizontal axis X2. It is configured to rotate interlockingly by contact engagement with the tool 38. The right and left lock mechanisms 30, 30 linked via the operation wires 39, 39 by the pull operation to the marker operation tool 38 by the forward / reverse rotation operation around the axis of the rotation support shaft 35 from the neutral position. It is configured to be selectively released.

The operating tool 31 can perform an on / off operation of the work clutch 8 by a rotation operation in a direction intersecting a forward / reverse rotation operation around the axis of the rotation support shaft 35, that is, a vertical operation. It is configured as follows. That is, the grip portion 36 is urged upward by the coil spring 40 toward the receiving position with respect to the washer 41 on the upper side, and the electric motor 17 is attached to the support portion 42 formed integrally with the rotation support shaft 35.
When the grip portion 36 is rotated upward against the urging force of the coil spring 40, the interlocking piece 44 abuts on the limit switch 43 and the control device 45 via the control device 45. When the electric motor 17 is driven to operate, the work clutch 8 is turned on, and when it is operated again, the work clutch 8 is turned off.

In the claims, reference numerals are provided to facilitate comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is an overall side view of a rice transplanter.

FIG. 2 is a cutaway front view of an operation tool disposition portion.

FIG. 3 is a diagram showing a switching structure of a drawing marker.

FIG. 4 is a cutaway side view of the work clutch.

FIG. 5 is a cutaway front view of a work clutch.

[Explanation of symbols]

 2 seedling planting device 8 work clutch 12,12 drawing marker 31 operating tool 46 operation part

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[Procedure amendment]

[Submission date] September 7, 2000 (2009.7)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Operation structure of work vehicle

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a construction in which a working machine is connected to a traveling machine so as to be able to move up and down freely and power is transmitted to a working mechanism via a working clutch. The present invention relates to an operation structure of a work vehicle provided with a marker for drawing an index.

[0002]

2. Description of the Related Art In the above-mentioned work vehicle, there is a conventional work vehicle in which an operating tool for both switching operation of a marker and operation of a work clutch is provided near a seat.

[0003]

In the operation structure as described above, for example, at the time of work at a work place, especially at the time of turning at the end of the work place, the turning operation of the body, the switching operation of the operating state of the marker, and the work Multiple types of operations such as clutch operation must be performed in a short time, and it is necessary to greatly reciprocate the hand between the control handle and the operating tool near the seat. It is sometimes difficult to perform the switching operation or the operation of the work clutch in a short time, especially for an unskilled operator.

An object of the present invention is to make it possible to easily perform a switching operation of a marker operating state or an operation of a work clutch in an operation structure of a work vehicle.

[0005]

According to a first feature of the present invention, in the operation structure of a work vehicle described at the beginning, an operation tool is provided below a control handle of a body control section, and a marker is provided by the operation tool. The operation state is switched and the work clutch is operated. The operation and the effect of the invention are as follows.

A second feature of the present invention is that, in the first aspect, the operation of switching the operation state of the marker and the operation of the work clutch are performed by operating the operating tool in two different directions. The effect is as follows.

According to a third characteristic configuration of the present invention, in the second aspect, the operation of the operation clutch is performed by operating the operation tool in a direction toward and away from the operation handle, and the operation tool in the direction intersecting with the operation clutch is operated. The configuration is such that the operation of switching the operation state of the marker is performed by the operation, and the operation and the effect of the invention are as follows.

[0008]

According to the first characteristic configuration, for example, when turning at the end of the work place, when turning the body, switching the operation state of the marker, or operating the work clutch,
As described in the problem to be solved by the invention, since the operating tool is provided below the steering handle, the hand or finger can be moved from the state in which the steering handle is held by hand without having to reciprocate the hand greatly. Can be easily operated by operating the operating tool by extending the arm downward or by reciprocating the hand slightly. Thereby, it is possible to easily perform the transition from the turning operation of the body to the operation of switching the operation state of the marker / operation of the work clutch, or from the operation of switching the operation state of the marker / operation of the work clutch to the operation of turning the body. .

According to the second characteristic configuration, the operation target is made different depending on the operation direction, and it is easy to prevent confusion between the operation of switching the operation state of the marker and the operation of the work clutch.

According to the third characteristic configuration, the operating direction of the operating tool for operating the work clutch is a direction toward and away from the steering handle, and the operating direction of the operating tool for operating the work clutch and the operating handle are different. By making the operation directions different from each other, it is unlikely that one of the operations will cause the other to be erroneously operated, and the respective operations hardly affect each other.

[0011]

Therefore, for example, at the time of turning at the end of the work place, it is easy to shift from the control handle to the operating tool, and the turning operation of the body, the switching operation of the marker operating state, or the operation of the work clutch can be performed. The operability has been improved because it can be easily performed. In addition, the operability is further improved by sharing the operation of switching the operation state of the marker and the operation of the work clutch with one operating tool. In an operating tool that is used for both the switching operation of the marker operation state and the operation of the work clutch, the operation direction of the operation for switching the operation state of the marker is different from the operation direction of the operation of the work clutch, thereby preventing confusion of operation. This facilitates operation and reduces erroneous operations (claim 2). Since the steering handle is hard to be operated by the hand or the like operating the work clutch, the straightness of the work vehicle is hardly hindered.On the other hand, when the hand or the like operating the control handle hits the operating tool, the work clutch is operated and the work machine is erroneously operated. The number of operations is also reduced, and malfunctions of the work vehicle can be reduced (claim 3).

[0012]

Embodiments will be described below with reference to the drawings. FIG.
As shown in the figure, a link mechanism 1 is provided at the rear of the riding type traveling body.
The seedling planting apparatus 2 is connected so as to be able to ascend and descend freely via the vehicle, thereby constituting a riding type rice transplanter. A transmission system is configured so that the power of the engine 3 mounted on the front part of the traveling body is transmitted to the front wheels 6 and the rear wheels 7 and the seedling planting device 2 via the belt transmission device 4 and the transmission case 5. The power to the seedling planting device 2 is configured to be transmitted and cut off by the work clutch 8 (see FIGS. 4 and 5) of the transmission case 5.

As shown in FIG. 1, the seedling planting apparatus 2 includes a seedling rest 9 and a seedling rest 9 which reciprocate and laterally move while placing seedlings for planting.
A planting mechanism 10 for taking out seedlings one by one from the lower end of the seedling and planting the seedlings on a mud surface, a ground float 11 sliding on the mud surface, and the like are provided. A drawing marker 12 for drawing a line groove, which serves as a running index at the time of the next planting process, on the mud surface along with the running is provided so as to be able to move out and back. Planting claw support cases 15 that rotate relative to each other based on set characteristics are attached to both sides of a rotating case 14 that is driven to rotate about the horizontal axis of the planting transmission case 13, and are provided in the planting support case 15. The planting mechanism 10 is configured to plant a seedling with the planted claws 16.

The work clutch 8 is configured to be turned on and off by an electric motor 17, and when the work clutch 8 is turned off, the two planting claw support cases 15
The work clutch 8 is configured in a fixed position stop type so that the planting claw 15 is stopped at a predetermined rotation phase at which the height of the planting surface is substantially the same as the mud surface height, thereby reducing the possibility that the planting claw 15 is damaged during non-planting traveling. .

As shown in FIG. 4, in the working clutch 8, an input gear 19 is rotatably fitted on a transmission shaft 18 to the seedling planting apparatus 2, and a shift member 20 is fitted on the transmission shaft 18 by a spline. Thus, an engaging portion 21 is formed between the input gear 19 and the shift member 20 so that the engaging portion 21 can freely engage and separate. The shift member 20 is urged by a spring in the occlusal direction (biased toward the engagement operation side of the work clutch 8), and is shifted by the electric motor 17 via the gear reduction mechanism 22, the push / pull rod 23, and the shift fork 24. 20 is configured to be operated. A spring 25 for absorbing a stroke is provided in the middle of the linking of the push-pull rod 23.

The shift fork 24 is constructed so that the shift member 20 can be disengaged only when the transmission shaft 18 is at a predetermined rotational phase when the work clutch 8 is disengaged. As shown in FIG.
The contact portion 24a integrally formed with the engaging recess 2 formed at a predetermined rotation phase of the large-diameter flange portion 20a of the shift member 20
6, the disengagement operation of the work clutch 8 is allowed. The contact restricting portion Q of the engaging concave portion 26 with respect to the contact portion 24a is formed to be thick, so that even when the electric motor 17 is used to disengage the work clutch 8 at a low speed, the operation for disengaging the work clutch 8 is reliably performed. It is configured to be able to do it.

As shown in FIG. 3, the right and left drawing markers 12 are rotatable about the front-rear axis X1 between an operating position protruding laterally outward and a retracted position retracting inward. And is urged by a spring 28 so as to rotate toward the acting posture. Based on a relative posture change between the seedling planting device 2 and the link mechanism 1 accompanying the rising of the seedling planting device 2. The right and left drawing markers 12 are forcibly operated to the storage postures via the wires 29. A lock mechanism 30 is provided for holding the right and left drawing markers 12 in the stored posture even when the seedling planting apparatus 2 is lowered, and by selectively performing an operation of releasing the lock mechanism 30,
It is configured such that the right or left drawing marker 12 can be operated to the action posture.

As shown in FIG. 1 and FIG.
The operation tool 31 is disposed below the sixth steering handle 32. As shown in FIGS. 2 and 3, the handle post 3
A grip portion 36 is supported on a rotation support shaft 35 rotatably supported around a longitudinal axis Y of a bracket 34 fixed to 3 so as to be integrally rotatable and vertically rotatable relative to each other by fitting of different diameters. The operation tool 31 is configured, and the rotation support shaft 35 is provided.
Is fixed to the horizontal axis X of the bracket 34.
It is engaged with a marker operation tool 38 that is rotatably supported around 2. When the rotation support shaft 35 is rotated forward and reverse around the vertical axis Y from the neutral position, the right and left lock mechanisms 30 linked via the operation wire 39 are selectively operated by the pull operation of the marker operation tool 38. Release operation is performed.

As shown in FIG. 2, the operating tool 31 is turned on and off by turning the working clutch 8 upward and downward by a rotation operation in the vertical direction that intersects the normal and reverse rotation operations around the vertical axis Y of the rotation support shaft 35. Is configured to be performed. The grip portion 36 is urged upward by a coil spring 40 toward the upper washer 41, and the support portion 42 fixed to the rotation support shaft 35 is provided with a limit switch 43 for driving the electric motor 17 to rotate forward and reverse. ing. Thereby, when the grip portion 36 is rotated upward against the urging force of the coil spring 40,
The interlocking piece 44 comes into contact with the limit switch 43, the electric motor 17 is driven via the control device 45, and the work clutch 8 is engaged. When the grip portion 36 is again rotated upward, the work clutch 8 is configured to be cut.

In the claims, reference numerals are provided for facilitating comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is an overall side view of a riding rice transplanter.

FIG. 2 is a rear view of the vicinity of the operation tool.

FIG. 3 is a diagram showing an operation structure of right and left drawing markers.

FIG. 4 is a longitudinal sectional side view of a work clutch.

FIG. 5 is a longitudinal sectional front view of a work clutch.

[Description of Signs] 2 Work machine 8 Work clutch 12 Marker 10 Work mechanism 31 Operating tool 32 Control handle 46 Aircraft control section

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Fig. 1

[Correction method] Change

[Correction contents]

FIG.

[Procedure amendment 3]

[Document name to be amended] Drawing

[Correction target item name] Figure 2

[Correction method] Change

[Correction contents]

FIG. 2

Claims (1)

[Claims] An operating device (2) is connected to a traveling body so as to be able to move up and down, and a working clutch (8) for transmitting power to the operating device (2) and an index of a next working process are assigned to a working place. A marker (12), and an operation tool (31) that is artificially operated below the operation handle (32) of the aircraft operation unit (46), and by operating the operation tool (31) The on / off operation of the working clutch (8), and the marker (12)
A mobile work machine configured to perform a switching operation of an operating state of the mobile work machine.