JP2001275410A - Paddy field working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize both a working condition suitable for an operation of straight planting and a working condition suitable for an operation of turning planting and to achieve an improvement in operability while achieving simplification of an operating configuration and reduction of a production cost. SOLUTION: This paddy field working machine is configured so that a working device 4 is switched to a working condition when a neutral-equilibrium type operating tool 31 is operated to the primary operating position F1 at one side and storage holding of a line marker 26 at the one side by a holding mechanism 29 at the one side corresponding to the working direction of the working device 4 is released to allow the line marker 26 to switch to a working position when the operating tool 31 is operated to the secondary operating position F2 at the one side. Besides, the working machine is configured so that the working device 4 is switched to the working condition when the operating tool 31 is operated to the primary operating position R1 at another side and storage holding of the line marker 26 at the another side by the holding mechanism 29 at the another side corresponding to the working direction of the working device 4 is released to allow the line marker 26 to switch to the working position when the operating tool 31 is operated to the secondary operating position R2 at the another side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling machine, in which a working device is connected to a rear portion of a traveling machine body via a link mechanism which moves up and down by operating a hydraulic cylinder so as to be able to move up and down. A paddy field working machine having left and right drawing markers that can be switched between a working posture for forming a reference line and a storage posture in which the tip is separated from the field, and a left and right holding mechanism for holding each drawing marker in the storage posture. About.

[0002]

2. Description of the Related Art Conventionally, in a rice transplanter as an example of the paddy field working machine described above, for example, Japanese Patent Application Laid-Open No. 9-29442.
As disclosed in Japanese Patent Application Publication No. 7-107, a dedicated operating tool for switching the working device to the operating state while maintaining the holding of the drawing marker by the holding mechanism in the storage position, and a corresponding drawing marker by the holding mechanism. A dedicated operating tool for switching the working device to the operating state in a state where the holding in the retracted position is released and the switching to the operating position is permitted is provided.

[0003] Incidentally, the former operating tool is used to bring out a working state suitable for, for example, a round planting operation in which it is not necessary to form a next running reference line in the field immediately before the end of the planting operation. The latter operating tool is used when a work state suitable for a normal straight-planting operation in which a next travel reference line needs to be formed in a field is to be displayed.

[0004]

That is, according to the above-mentioned prior art, since two operating tools are provided for the round planting operation and the straight planting operation, the operation structure becomes complicated and the manufacturing cost increases. Was to be invited.

In addition, in order for the operating tool for the straight planting operation to function, it is necessary to first operate the operating tool for the round planting operation to the automatic position, so that there is room for improvement in operability. .

[0006] Even when an operating tool for a straight planting operation and an operating tool for a rotation planting operation are provided, these operations are performed by the holding mechanism while the working device is in a non-operating state. Before the planting operation, such as releasing the holding of the drawing marker in the storage position and allowing the switch to the working position, it is not possible to bring out a running state suitable for securing the rotation planting work route. It has been desired that such a state can be revealed by the operation described above.

A first object of the present invention is to make it possible to produce a work state suitable for straight planting work and a work state suitable for round planting work while simplifying the operation structure and reducing the manufacturing cost. The second object is to secure a rotation path for planting before planting, while simplifying the operation structure and reducing manufacturing costs. It is an object of the present invention to make it possible to show a running state and to improve operability.

[0008]

Means for Solving the Problems [Structure] In order to achieve the first object, in the invention according to the first aspect of the present invention, the traveling body is vertically moved and oscillated by operating a hydraulic cylinder. The working device is connected via a link mechanism so that it can move
Left and right delineation markers whose positions can be switched between an action position in which the tip enters the field and forms the next running reference line and a stored position in which the tip is separated from the field, and holds each delineation marker in the storage position. In a paddy field working machine having left and right holding mechanisms, a neutral return type operation tool is provided in a boarding operation unit of the traveling machine body, and when the operation tool is operated to one of the first operation positions, the operation device is brought into an operating state. When the operating tool is operated to one of the second operation positions, the holding of the one drawing marker by the one holding mechanism corresponding to the operation direction in the storage position is released, and the one drawing marker is released. When the operating device is operated to the other first operation position, the working device is switched to the operating state, and when the operating device is operated to the other second operating position, the operation device is operated. And configured to permit attitude switching to the working position of said other drawing markers to release the hold on the stored position of the other the other drawing markers by the holding mechanism corresponding to the operation direction.

According to the first aspect of the present invention, by operating the operation tool to one or the other of the first operation positions, the operation is performed while the holding mechanism holds the drawing marker in the storage posture. Switching the device to the operating state, it is possible to bring out a work state suitable for the time of the rotation planting work where it is not necessary to form the next travel reference line in the field, and thereafter, the operating tool is changed to one or the other of the other. By operating up to the two operation positions, it is necessary to form a next running reference line in the field, such as releasing the holding of the corresponding drawing marker by the holding mechanism in the storage posture with the working device switched to the operating state. It is possible to bring out a work state suitable for a normal straight planting work.

In other words, while a single operating tool is provided and the operating tool has a simple structure in which the operating tool is linked to a working device drive system and a holding mechanism, the working state is suitable for a rotation planting operation and the like, and is straightly planted. A work state suitable for work can be obtained.

[0011] Further, since the appearance can be performed by operating a single operating tool, the straight planting operation is performed as in the above-described prior art provided with the operating tool for the straight planting operation and the operating tool for the rotation planting operation. It is not necessary to perform a troublesome operation such as operating the operating tool of the planting operation to make the operating tool function.

[Effect] Therefore, while simplifying the operation structure and reducing the manufacturing cost, it is possible to present a work state suitable for the straight planting work and a work state suitable for the round planting work, and also to improve the operability. In terms of quality.

[Structure] In order to achieve the second object,
In the invention according to claim 2 of the present invention, the working device is connected to the rear portion of the traveling machine body via a link mechanism that moves up and down by operating a hydraulic cylinder so as to be able to move up and down, and the tip enters the field and the next time. A paddy field having left and right drawing markers that can be switched between a working posture for forming a travel reference line and a storage posture in which the tip is separated from the field, and a left and right holding mechanism for holding each drawing marker in the storage posture. In the work machine,
The boarding operation unit of the traveling body is provided with a neutral return type operation tool, and when the operation tool is operated to one of the first operation positions, the storage of the one drawing marker by the one holding mechanism corresponding to the operation direction. When the holding in the posture is released to allow the one drawing marker to switch the posture to the working posture, and when the operating tool is operated to the one second operation position, the working device is switched to the operating state, and the operation is performed. When the tool is operated to the other first operation position, the holding of the other drawing marker in the stored posture by the other holding mechanism corresponding to the operation direction is released and the posture of the other drawing marker to the working posture is released. Switching is allowed, and when the operating tool is operated to the other second operating position, the working device is switched to the operating state.

According to the second aspect of the present invention, by operating the operating tool to one or the other of the first operating positions, the corresponding drawing marker by the holding mechanism while the working device is in the inactive state. To release the holding in the storage position and allow the switch to the working position, which makes it possible to bring out a running state suitable for securing a rotation planting work route before planting work. Alternatively, by operating to the other second operation position, the next travel reference line is formed in the field, such as switching the working device to the operating state in a state in which the holding mechanism releases the holding of the corresponding drawing marker in the storage posture. It becomes possible to bring out a work state suitable for a necessary normal straight planting work.

In other words, while having a simple structure in which a single operating tool is provided and the operating tool is linked to a working device drive system and a holding mechanism, it is suitable for securing a rotation planting work path before planting work. The running state and the work state suitable for the straight planting work can be displayed.

[0016] Further, since the appearance can be performed by operating a single operation tool, it is advantageous in terms of operability as compared with the case where the appearance is performed by operating a dedicated operation tool. Will be able to do it.

[Effect] Therefore, while simplifying the operation structure and reducing the manufacturing cost, the present invention provides a working state suitable for the straight planting operation and a traveling state suitable for securing the round planting work path before the planting operation. In addition to being able to take out, it has become possible to make it advantageous in terms of operability.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an overall side view of a riding type rice transplanter, which is an example of a paddy field working machine. 2
By connecting a seedling planting device 4 which is an example of a working device via a link mechanism 3 which moves up and down and swings by the operation of, and mounting a fertilizer device 5 which is an example of a working device, it is configured to a mid-mount fertilization specification. Have been.

The traveling body 1 receives power from the engine 6,
A four-wheel drive system that transmits power to the left and right front wheels 10 and rear wheels 11 via the transmission shaft 7, the hydrostatic continuously variable transmission 8, the gear transmission 9, etc. In the section, a boarding driving section 14 including a steering wheel 12 for steering the left and right front wheels 10 and a driver seat 13 is formed.

In the seedling planting apparatus 4, the terrain float 15 preliminarily lands the seedling planting area in accordance with the running of the machine body, while the working power from the gear type transmission 9 is transmitted to the feed case 16, and The seedling table 17 is reciprocated by a constant stroke in the left-right direction by the distributed power from the case 16, and a plurality of rotary planting mechanisms 18 are provided.
However, it is configured to perform a planting operation of taking out a predetermined amount of seedlings from the lower end of the seedling mounting table 17 and planting them in a field.

The fertilizer applicator 5 has a plurality of feeding mechanisms 20 using working power from the gear-type transmission 9 while a fertilizer-producing device 19 provided on the terrain float 15 forms a fertilizer application groove as the machine body travels. Feeds out the fertilizer in the fertilizer hopper 21 by a predetermined amount, and feeds the fertilizer fed by each feeding mechanism 20 by the operation of the electric fan 22 to the corresponding groove generator 19 via the guide hose 23. It is configured so that fertilizer is buried in the lateral side of the planted seedling in the field.

As shown in FIG. 1 and FIG.
, Each leveling float 15 is supported by a corresponding one of a plurality of support arms 25 extending rearward and downward from a left-right float fulcrum shaft 24 so as to be able to swing up and down around a horizontal shaft center P1. Have been.

The traveling body 1 has a pair of left and right delineating markers 26 each having a tip end which enters the field to form a running reference line for the next time, and a tip which separates from the field and approaches the traveling body 1. It is equipped so that the attitude can be switched around the axis P2 with the stored attitude.

The left and right drawing markers 26 are attached to the seedling planting device 4.
When the operation wires 27 linked to the respective members are pulled in in conjunction with the rise of the control wire 27 to the predetermined upper limit position, the operation wires 27 are switched to the storage position against the bias of the spring 28, and the corresponding storage positions are set. By the action of the left and right holding mechanisms 29 linked to the operation wire 27, the seedling placement device 4 is held in the stored position regardless of the descending operation. or,
The operation of the electromagnetic cylinder 30 corresponding to each holding mechanism 29 selectively releases the holding in the storage posture by each holding mechanism 29, thereby allowing the posture switching to the working posture. The lowering operation of lowering the seedling planting device 4 to the planting position, which is the predetermined working height position, is performed, or the release state is selectively displayed when the seedling planting device 4 is lowered to the planting position, The delineated marker 26 on the deselected side is switched to the operating position by the bias of the spring 28.

The raising and lowering of the seedling planting device 4 is performed on the traveling body 1 based on the operation of a cross swing type operation lever 31 which is an example of a neutral return type operation tool provided at the lower right of the steering wheel 12. A control device 32 including a mounted microprocessor or the like controls the operation of an electromagnetic switching valve 33 that switches a flow state of hydraulic oil to the hydraulic cylinder 2 so as to perform the operation.

As shown in FIG. 2, when the operation lever 31 is operated to the first operation position U1 above it by the first switch S1.
The operation to the second operation position U2 above the operation is detected by the second switch S2, the operation to the first operation position D1 below the operation is detected by the third switch S3, and the second operation below the operation. The operation to the position D2 is detected by the fourth switch S4, the operation to the first operation position F1 in front of the operation is detected by the fifth switch S5, and the operation to the second operation position F2 in front of the operation is performed by the sixth switch S6.
The operation to the first operation position R1 behind is detected by the seventh switch S7, and the operation to the second operation position R2 behind is detected by the eighth switch S8. , And outputs the respective detection information to the control device 32.

The control device 32 includes a leveling float (hereinafter abbreviated as a sensor float) 15 located at the center in the left and right directions.
In addition, a float sensor 34 composed of a rotary potentiometer equipped to detect the vertical swing angle around the axis P1 and an upper limit switch for detecting the arrival of the seedling planting device 4 at a predetermined upper limit position The detection information from Su or the like is also input, and the control device 32, based on the detection information,
The operation of the electromagnetic cylinder 30 for each holding mechanism 29 and the clutch motor 36 for switching the planting clutch 35 capable of intermittently transmitting power to the seedling planting device 4 and the fertilizer application device 5 is also controlled. .

The control operation of the control device 32 will be described with reference to FIG. 3. When the operation of the operation lever 31 to the first operation position U1 above the operation lever 31 is detected by the first switch S1, the control device 32 performs electromagnetic control. The switching valve 33 is switched to a supply state in which hydraulic oil is supplied to the hydraulic cylinder 2, and the hydraulic cylinder 2 is shortened to raise the seedling planting device 4. The operation lever 31 is maintained at the operation position U1 and the first switch is operated. S1
While the detection is continued, the raising of the seedling planting device 4 is continued by maintaining the electromagnetic switching valve 33 in the supply state, the operation is released, and the operation lever 31 is detected by the first switch S1. When the operation is stopped, the electromagnetic switching valve 33 is switched to a stop state in which the flow of the hydraulic oil to the hydraulic cylinder 2 is stopped to stop the hydraulic cylinder 2, thereby stopping the seedling planting device 4 at an arbitrary ascending position. I have.

When the operation of the operation lever 31 to the second operation position U2 above the operation lever 31 is detected by the second switch S2, the electromagnetic switching valve 33 is switched to the supply state to shorten the hydraulic cylinder 2. Even if the operation of the planting device 4 is lifted and the operation lever 31 is no longer detected by the second switch S2, the raising of the seedling planting device 4 is maintained by maintaining the electromagnetic switching valve 33 in the supply state. When the arrival of the seedling planting device 4 at the predetermined upper limit position is detected by the upper limit switch Su, the electromagnetic switching valve 33 is switched to the stop state and the hydraulic cylinder 2 is stopped, so that the seedling planting device 4 is stopped. Is stopped at the upper limit position.

Conversely, when the operation of the operation lever 31 to the first operation position D1 below is detected by the third switch S3,
By switching the electromagnetic switching valve 33 to a discharge state in which hydraulic oil is discharged from the hydraulic cylinder 2 to extend the hydraulic cylinder 2, the seedling planting device 4 is lowered, and the operation lever 31 is maintained at the operation position D1 and the third operation is continued. While the detection by the switch S3 is continued, the lowering of the seedling planting device 4 is continued by maintaining the electromagnetic switching valve 33 in the discharge state, the operation is released, and the operation lever 31 is operated by the third switch S3. Is not detected, the electromagnetic switching valve 33 is switched to the stop state to stop the hydraulic cylinder 2, thereby stopping the seedling planting device 4 at an arbitrary lowered position.

When the operation of the operation lever 31 to the second operation position D2 below the operation lever 31 is detected by the fourth switch S4, the electromagnetic switching valve 33 is switched to the discharge state and the hydraulic cylinder 2 is extended, so that the seedling is expanded. Even if the operation of the planting device 4 is lowered and the operation lever 31 is no longer detected by the third switch S3, the lowering of the planting device 4 is maintained by maintaining the electromagnetic switching valve 33 in the discharge state. When the float sensor 34 detects that the sensor float 15 has reached the planting position where the sensor float 15 returns to the reference posture, the electromagnetic switching valve 33 is switched to the stop state to stop the hydraulic cylinder 2. Thus, the seedling planting device 4 is stopped at the planting position. In this state, if the sensor float 15 swings up and down out of the reference posture as the aircraft travels, the operation of the electromagnetic switching valve 33 is controlled based on the detection information from the float sensor 34 at that time. Thus, the seedling planting apparatus 4 is moved up and down so that the sensor float 15 returns to the reference posture.
Can be maintained in the planting position.

When the seedling planting device 4 is located at the planting position, the first operation position F1 in front of the operation lever 31 is set.
Is detected by the fifth switch S5, or the operation to the first operation position R1 behind the operation lever 31 is performed by the seventh switch S5.
When the detection is detected by the switch S7, the clutch motor 36 is operated to switch the planting clutch 35 from the power-off state to the power-on state, and the seedling planting device 4 and the fertilizing device 5 are operated, so that the drawing marker 26 is moved. An operation state suitable for a rotation planting operation in which the stored next running reference line is not formed in the field is produced.

When the operation of the operation lever 31 to the front second operation position F2 is detected by the sixth switch S6, the holding mechanism 2 for holding the left drawing marker 26 in the stored posture.
9, the switching of the left drawing marker 26 to the working posture is allowed, and the left drawing marker 26 is switched to the working posture. An operation state suitable for a straight planting operation in which a line is formed in a field on the left side of the machine is brought out.

Conversely, when the operation of the operating lever 31 to the second operating position R2 behind is detected by the eighth switch S8,
By actuating the electromagnetic cylinder 30 with respect to the holding mechanism 29 for holding the right drawing marker 26 in the stored posture, the right drawing marker 26 can be switched to the working posture, and accordingly, the right drawing marker 26 is switched. Is switched to the action posture, so that a work state suitable for the next straight-line planting work for forming the next running reference line in the field on the right side of the machine body appears.

In these working states, the control device 32 controls the raising and lowering of the seedling planting device 4 based on the detection information from the float sensor 34. The planting device 4 can be maintained at the planting position, so that the seedlings can be stably planted at the preset planting depth.

In these working states, the operation of the operation lever 31 to the first operation position U1 or the second operation position U2 above is performed by the first switch S1 or the second switch S2.
, The raising operation state of the seedling planting device 4 based on the respective detections appears, and the clutch motor 36 is operated to switch the planting clutch 35 from the transmission-on state to the transmission-off state. Then, a non-working state in which the planting of the seedling by the seedling planting device 4 and the fertilization by the fertilizing device 5 are stopped appears.

In other words, while the single operating lever 31 is provided, the operating lever 31 is operated to the first operating position F1 in the front or the first operating position R1 in the rear, so that it can be used for the rotation planting operation. And the operating lever 31 can be displayed in the second operating position F at the front.
By operating the second or rear second operation position R2, a work state suitable for straight planting work can be realized.

[Other Embodiments] Other embodiments of the present invention will be listed below. As shown in FIG. 4, when the operation of the operation lever 31 to the first operation position F1 in front of the operation lever 31 is detected by the fifth switch S5 in the state where the seedling planting device 4 is located at the planting position, the left drawing is performed. The marker 26 is switched to the action posture, and a counterclockwise traveling state suitable for securing the rotation planting work path before the planting work is revealed, and the operation of the operation lever 31 to the second operation position F2 in front of the sixth operation is performed. When detected by the switch S6, a work state suitable for the next straight planting work for forming the next running reference line in the field on the left side of the aircraft appears, and conversely,
When the operation of the operation lever 31 to the first operation position R1 behind is detected by the seventh switch S7, the drawing marker 26 on the right side is switched to the operation posture, and the rotation planting work path before the planting work is performed. A clockwise running state suitable for securing is displayed, and when the operation of the operating lever 31 to the second operating position R2 behind is detected by the eighth switch S8, the next running reference line is formed in the field on the right side of the machine body. A work state suitable for the straight planting work to be performed may be made to appear. The arrangement position of the operation tool 31 can be variously changed. For example, the operation tool 31 may be arranged on the lateral side of the driver's seat 13. The paddy field working machine may be a direct sowing machine or a weeding machine.

[Brief description of the drawings]

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

FIG. 2 is a block diagram showing a control configuration.

FIG. 3 is a diagram showing a relationship between an operation position and an operation state.

FIG. 4 is a diagram showing a relationship between an operation position and an operation state in another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling body 2 Hydraulic cylinder 3 Link mechanism 4 Working device 14 Boarding operation part 26 Drawing marker 29 Holding mechanism 31 Operating tool F1 One first operating position F2 One second operating position R1 The other first operating position R2 The other first 2 operation positions

Claims (2)

[Claims] A working device is connected to a rear portion of a traveling machine body via a link mechanism which moves up and down by operation of a hydraulic cylinder so as to be able to move up and down, and a tip enters a field to form a next traveling reference line. A paddy field working machine comprising: a left and right drawing marker capable of switching between a posture and a storage posture in which a tip is separated from a field, and a left and right holding mechanism for holding each drawing marker in the storage posture. The boarding operation unit of the aircraft is equipped with a neutral return type operation tool, and when the operation tool is operated to one of the first operation positions, the working device is switched to the operating state, and the operation tool is moved to the one second operation position. When the operation is performed, the holding of the one drawing marker by the one holding mechanism corresponding to the operation direction in the storage posture is released, and the posture switching of the one drawing marker to the working posture is permitted, and the operating tool is moved. other When the operating device is operated to the first operating position, the operating device is switched to the operating state, and when the operating tool is operated to the other second operating position, the other holding mechanism corresponding to the operating direction stores the other drawing marker. A paddy working machine configured to release the holding in the posture and to allow the posture change of the other drawing marker to the working posture. 2. An operation in which a working device is connected to a rear portion of a traveling machine body via a link mechanism that moves up and down by operating a hydraulic cylinder so as to be able to move up and down, and a tip enters a field to form a next traveling reference line. A paddy field working machine comprising: a left and right drawing marker capable of switching between a posture and a storage posture in which a tip is separated from a field, and a left and right holding mechanism for holding each drawing marker in the storage posture. The boarding operation unit of the aircraft is provided with a neutral return type operation tool, and when the operation tool is operated to one of the first operation positions, the one holding marker corresponding to the operation direction is used to store the one drawing marker in the storage position. Is released, the posture switching of the one drawing marker to the working posture is permitted, and when the operating tool is operated to one of the second operation positions, the working device is switched to the operating state, and the operating tool is other Is operated to the first operation position, the holding of the other drawing marker by the other holding mechanism corresponding to the operation direction in the storage posture is released, and the posture switching of the other drawing marker to the working posture is permitted. A paddy working machine configured such that when the operating tool is operated to the other second operating position, the working device is switched to an operating state.