JP2005176766A - Farm working vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a farm working vehicle capable of controlling a harrowing tool and a leveler for puddling, suiting the work in a small-scale field with a simple construction dispensing with a large-scale apparatus. <P>SOLUTION: This farm working vehicle has the harrowing tool 2 and the leveler 3 for puddling connected to a machine body 1 in a manner vertically movable relatively to the body with a driving means. The rod 7 of a float is loosely inserted in a slidable manner into a vertical pipe 9 attached to the harrowing tool 2 and the leveler 3 for puddling, and the driving means for vertically moving the harrowing tool 2 and the leveler 3 is controlled by receiving the vertical distance variation of respective specific parts of the vertical pipe 9 and the rod 7 of the float. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a field work machine for leveling the bed of a paddy field.

In rice farming, in order to improve the yield per unit area, it is one of the requirements to make the soil environment uniform.
For the purpose of homogenizing the soil environment, the surface layer of the paddy field is caused by rotary agitation, which is a crushing tool, and the so-called scraping operation is performed in which the surface layer is leveled horizontally with a flat plate.

Thus, in order to enable the rice planting work with the surface of the paddy field being horizontal, the rotary depth of the field work machine and the position of leveling the soil of the flat plate installed behind are important.
That is, a horizontal paddy field can be obtained by holding the rotary and the leveling plate at a certain height without being affected by the vertical movement of the machine main body that travels forward that is not leveled.

In order to keep the crushing tool and the leveling plate at a constant height, for example, in Japanese Patent Laid-Open No. 9-103113, a crusher, a leveling plate is provided on the frame of the machine body, and a pressure reducer is provided behind the machine. The rod of the telescopic cylinder that is pivotally attached to the frame and provided on the machine body frame is attached to the extending mast of the pressure suppressor frame.
The expansion / contraction control of the expansion / contraction cylinder is performed by receiving a plane signal received from a laser light emission unit provided outside the field by a laser light reception unit standing on the frame.
JP-A-9-103113

  In the above prior art, a large-scale device such as a laser emitter is installed outside the field, and a laser receiver is provided on the work machine, which is suitable for a large-scale rice farming field. Therefore, it is not suitable for use in small working machines.

  Therefore, the present invention is intended to provide a field work machine capable of controlling a crushing tool and a leveling plate suitable for a small-scale field without requiring large equipment with a simple configuration.

  The present invention relates to a ground breaking tool in which a ground breaking tool and a leveling plate are connected to a work machine body, and the ground breaking tool and the leveling plate are controlled to be vertically movable by a driving unit with respect to the work machine body. The float rod is slidably loosely inserted into the vertical cannula attached to the leveling plate, and the crushing tool and leveling plate are moved up and down by the passive distance of the vertical distance between the specific parts of the vertical cannula and the float rod. The driving means is controlled, and a horizontal plate is horizontally provided at a specific position of the vertically opposed rod and cannula, and an operation wire of the driving means is interposed between the horizontal plate and the rod and cannula. The tip of the operating wire is fixed to the horizontal plate of the rod in the upper position, and the base end is connected to the operating lever of the driving means through the horizontal plate of the cannula in the lower position. It is.

  The present invention transmits the distance of the vertical movement of the work implement body to the flat plate drive means with reference to the float rod floated on the stretched water in the paddy field, and reverse direction to the work implement body It is moved up and down to control to a certain depth position from the water surface stretched on the paddy field.

  The float rod is always at a certain height relative to the water surface of the paddy field, while the sleeve that loosely inserts the float rod moves up and down the work implement body that connects the attached crusher and leveling plate. Therefore, the distance (length) of the vertical movement of the work implement body can be obtained by the distance between the float rod and the specific position of the sleeve, and the flat plate drive means can be adjusted according to the vertical movement. By controlling by driving in the reverse direction, it has the effect that the position of the flat plate can be controlled to a certain depth from the water surface.

  Because it uses the water stretched on the paddy field, no special equipment is required, and the float floating in the water that always holds the horizontal plane always maintains a constant height. This distance can be directly measured with a wire and transmitted to the drive lever as it is, so that it can be reliably transmitted with a simple structure.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view of a working machine showing an embodiment of the present invention. A ground breaking tool 2 and a leveling plate 3 are connected to the rear of the working machine body 1 and a float 4 is additionally provided.

The crushing tool 2 and the leveling plate 3 are connected together, and the farming scene after cultivating with the crushing tool 2 is leveled with the leveling plate 3. The lower end of the flat plate 3 is located at the same position, and the inclination angle of the flat plate 3 is supported so as to be adjustable (the specific configuration is omitted in the drawing).
The crusher 2 is connected to the work machine main body 1 so as to be adjustable up and down, and the up and down adjustment can be performed by extending and contracting the cylinder rod 6 of the cylinder 5.

  Therefore, by controlling the expansion and contraction of the cylinder rod 6 of the cylinder 5, the crushing tool 2 and the leveling plate 3 can be moved up and down at the same time, and the height position relative to the work machine body 1 can be raised and lowered to each cylinder chamber in the cylinder 5. The control valve 13 controls the oil to be sent.

The float 4 is located behind the flat plate 3, and float rods 7, 7, 7 are erected from the upper surface of the float 4.
On the other hand, a frame 8 is extended rearward from the crusher 2, and canopies 9, 9, and 9 are suspended from the front, and float rods 7, 7, and 7 are loosely attached to the canopies 9, 9, and 9, respectively. It is inserted.
Further, in the cannula 9 that is loosely inserted into the center float rod 7, the horizontal brackets 10, 11 protrude from the cannula 9 of the float rod 7 and the upper end of the cannula 9 so as to face the vertical position, respectively. It is installed.

The distal end portion of the operation wire 12 is fixed to the horizontal bracket 10 of the float rod 7, and the operation wire 12 hangs down parallel to the float rod 7 (cannula 9), and the through hole 15 of the horizontal bracket 10 of the cannula 9. The base end of the cylinder 5 is connected to the control lever 14 of the control valve 13 that controls the hydraulic pressure in each chamber of the cylinder 5 in a tensioned state.
Therefore, when the distance (interval) between the opposing horizontal brackets 10 and 11 changes, the control lever 14 is pushed and pulled by that amount, the control valve 13 is operated, and the cylinder rod 6 expands and contracts.

  That is, the vertical position of the horizontal bracket 10 of the float rod 7 is determined by the float 4, and the float 4 is always a constant height with respect to the field water surface. Although it does not change, the horizontal bracket 11 of one cannula 9 is driven by the crushing tool 2 and the leveling plate 3, and the crushing tool 2 and the leveling plate 3 are changed by the vertical movement of the work machine body 1. 11 also changes, and the change acts on the control lever 14 by the operation wire 12, the cylinder rod 6 expands and contracts, and the crushing tool 2 and the leveling plate 3 move up and down with respect to the work implement body 1. It is.

  Therefore, the cylinder 5 is controlled so that the distance between the horizontal brackets 10 and 11 is constant regardless of the vertical position of the work machine body 1. Since the vertical height relationship of the flat plate 3 is always constant, the height position of the earth breaking tool 2 and the level flat plate 3 with respect to the water surface is determined before work, and the operation wire 12 is stretched. For example, the height positions of the crushing tool 2 and the leveling plate 3 can always be controlled to a specific height with respect to the water surface as the working machine body 1 is moved up and down.

  The float 4 is not affected by the lifting / lowering of the crushing tool 2 or the leveling plate 3, and is large enough to maintain a floating state on the water surface stably even when the working machine body 1 is lifted / lowered even when the tension of the operation wire 12 is changed. In addition, the weight and material are selected, and the float rod 7 and the sleeve 9, the horizontal bracket 10, and the horizontal bracket 10 are adapted so that the control lever 14 can be smoothly operated in response to changes in the tension of the operation wire 12. It is preferable to appropriately provide an urging means and a sliding assist means between 11 and the control lever 14.

It is a side view of the working machine which concerns on this invention. It is a principal part rear view of the working machine which concerns on this invention. It is a fragmentary figure of the working machine which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Work implement body 2 Crusher 3 Flat plate 4 Float 5 Cylinder 6 Cylinder rod 7 Float rod 8 Frame 9 Cannula 10, 11 Horizontal bracket 12 Operation wire 13 Control valve 14 Control lever 15 Through-hole

Claims (2)

  In the field work machine in which the earth breaking tool and the leveling plate are connected to the work machine main body, and the earth breaking tool and the leveling plate are controlled to be movable up and down by the driving means with respect to the work machine main body, The float rod is slidably loosely inserted into the attached vertical cannula, and the driving means for moving the crusher and leveling plate up and down is controlled by passively moving the vertical distance between the specific parts of the vertical cannula and float rod. A field work machine characterized by that.   Horizontal plates are installed horizontally at specific positions on the upper and lower rods and the cannula, and the operation wires of the driving means are connected in parallel with the rods and the cannula between the horizontal plates. 2. The field work machine according to claim 1, wherein a distal end of an operation wire is fixed to a plate, and passes through a horizontal plate of a cannula at a lower position and is connected to an operation lever of a driving means with a base end.

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