JP3582325B2 - Paddy working machine - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to control of a drawing marker provided in a paddy working machine such as a rice transplanter.
[0002]
[Prior art]
FIG. 8 shows an example of an operation sequence in a case where seedlings are planted by a rice transplanter in a rectangularly partitioned field. First, the rice transplanter 1 enters the field from the road through the entrance, and travels idly on the ridge to the back of the field. Then, the seedlings are planted while moving the body parallel to the road, and when reaching the end of the field, the body is turned 180 degrees, and then the seedlings are planted while running in the opposite direction. Thus, seedling planting A reciprocating between the ends of the field is performed up to the ridge on the road side. Next, seedlings are planted on the body turning portion at the end of the field, so-called headlands B1 and B2. If the seedlings are planted on one headland B1, the seedlings are moved to the other headland B2 while planting the seedlings in the portion A 'where the seedlings have been left for one stroke at the time of reciprocating planting. Return to the entrance while planting and escape to the road. When the seedlings are planted in such an order, the number of idle running sections is small and the seedling planting operation can be performed efficiently.
[0003]
The rice transplanter 1 is provided with drawing markers 80, 80 for drawing on the topsoil surface a position where the right and left centers of the machine pass in the next step when the seedlings are reciprocated as described above. The drawing markers are provided on the left and right sides of the fuselage so as to be switchable between standing and overturning. The drawing markers on the next stroke side are turned over so that the tips thereof are in contact with the topsoil surface, and the topsoil is applied to the tip of the overturned drawing markers. A line is drawn by scratching the surface. At the time of performing seedling planting work in the next step, if the body is advanced so that the left and right centers of the body pass through the drawn traces, the seedling streak of each step is finished in parallel.
[0004]
As shown in FIG. 9, the left and right drawing markers 80, 80 are turned over, and one drawing marker is used to draw the next stroke while the other drawing marker is used to form the unplanted portion A '. The aircraft is advanced with the tip of the line along the line trace attached in the previous process. In this case, it is necessary to provide the drawing marker at a position in front of the seat of the traveling vehicle body so that the operator can easily see the drawing marker while operating the steering wheel.
[0005]
[Problems to be solved by the invention]
When the drawing marker is provided on the traveling vehicle body, when the body is tilted left and right due to unevenness of the plow, the tip of the falling drawing marker rises from the topsoil surface, and the line may not be drawn. . Conversely, when the tip of the drawing marker is strongly pressed against the topsoil, contaminants in the topsoil may be caught by the drawing marker and a line may not be drawn clearly on the topsoil surface. It is an object of the present invention to prevent such a situation and to always draw a line accurately with a drawing marker even when the body is inclined right and left.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the present invention has the following configuration. That is, a paddy field working machine according to the present invention is a paddy field working machine that performs agricultural work on a field while moving the body, and a line drawing marker that draws a line on the topsoil surface to display a position where the body passes in the next step as the body progresses. Provided on the body, up and down adjustment means for vertically adjusting the drawing marker with respect to the topsoil surface, detection means for detecting the horizontal inclination of the body, so that the height of the drawing marker with respect to the topsoil surface is constant, It is characterized in that a control means for actuating said vertical adjustment means in accordance with a detection result of said detecting means.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a rice transplanter shown in the drawings as a preferred embodiment will be described, but the present invention can be applied to other paddy working machines such as a fertilizer and a chemical sprayer.
[0008]
In the rice transplanter 1 shown in FIGS. 1 to 7, an eight-row seedling planting section 4 is attached to the rear side of the riding traveling vehicle body 2 via a lifting link device 3 so as to be able to go up and down. The main body of the fertilizer applicator 5 provided with a fertilizer discharge port on the side is mounted on the rear part of the riding traveling vehicle body 2, and is configured as an eight-row riding fertilizer applying rice transplanter as a whole.
[0009]
The traveling vehicle body 2 has a transmission case 10 disposed at the front of the fuselage. Front wheels 12, 12 are attached to front wheel axles that project outward from front wheel final cases 11, 11 provided on the left and right sides thereof. I have. Further, right and left rear wheel gear cases 16 and 16 are supported by a rear end portion of a main frame 14 extending rearward from a rear portion of the transmission case 10 by a rolling shaft 15 in a front-rear direction. The main rear wheels 17, 17 and the auxiliary rear wheels 18, 18 are attached to the rear axle projecting sideways.
[0010]
An engine 20 is mounted on the main frame 14, and a seat 22 is installed on an engine cover 21 that covers an upper part of the engine. In front of the seat 22, a steering wheel 23 for steering the front wheels 12, 12 is provided. Around the seat 22 and the handle 23, various levers, pedals, a control box 25 in which a controller 97 described later is incorporated, and the like are provided. 26 is a main step, 27 is an auxiliary step, and the operator can move on these steps. The rear portions of the main step 26 and the auxiliary steps 27, 27 are high so as not to interfere with the main rear wheels 17, 17 and the auxiliary rear wheels 18, 18. Reference numeral 28 denotes a footrest used when getting on and off the step from the left and right sides of the machine.
[0011]
The elevating link device 3 includes an upper link 31 and lower links 32, 32 rotatably attached to a link base 30 fixedly provided at the rear end of the main frame 14, and provided at the rear ends of these upper and lower links. The vertical link 33 is connected. A connection shaft 34 fixed to the seedling planting portion side is rotatably inserted and connected to a bearing projecting rearward from the lower end of the vertical link 33. A piston rod of an elevating hydraulic cylinder 36 whose base is pivotally supported by a support member fixed to the main frame 14 is connected to a lower end of a swing arm 37 provided integrally with the upper link 31, and the elevating hydraulic cylinder 36 is expanded and contracted. When this is done, the elevating link device 3 moves up and down, and the seedling planting section 4 moves up and down with a substantially constant posture.
[0012]
The seedling planting section 4 includes a transmission case 41a to which the power of the traveling vehicle body is transmitted via the planting transmission shaft 40, four planting transmission frames 41b,... The connecting pipes 41c,... Connecting the planting transmission frames 41b,... Constitute a seedling planting frame 41, and a seedling mounting table 42 is provided above the seedling planting frame 41. A total of eight sets of planting devices 43 are provided on the left and right sides of the rear end of the frames 41b.
[0013]
The seedling mounting table 42 includes a support rail 45 fixed to the planting transmission frames 41b,..., And a roller 47 mounted on an upper part of a seedling mounting table supporting frame 46 having a base fixed to the planting transmission frames 41b, 41b at both left and right sides. , Are slidably supported left and right, and are reciprocated right and left by a lateral feed mechanism in the transmission case 41a. By this reciprocating left and right movement, seedlings located at the lowest stage on the table are supplied one by one to seedling outlets 45a,... Formed in a seedling receiving frame integrated with the support rail 45. The seedlings 43,... Are supplied to the seedling outlets 45a,. When the seedling mounting table 42 has moved to the end of the left and right strokes and all the seedlings at the lowermost stage have been planted, the seedling feed belts 48,... Operate to transfer the seedlings on the table by one stage downward.
[0014]
The power input to the transmission case 41a is transmitted to the planting devices 43,... By the connecting pipes 41c,. In this transmission path, there are provided clutches 50,... For switching the operation and stop of the planting devices 43,. These clutches 50,... Are usually called “ridge clutches” because they are often operated “off” when working on the edge of the ridge. The on / off operation of the ridge clutches 50,... Is performed by the ridge clutch levers 51,.
[0015]
In the lower part of the seedling planting part 4, a total of four land-leveling floats, namely, center floats 53, 53 and side floats 54, 54 are provided. When the airframe advances while the floats are in contact with the mud surface of the field, the floats slide while leveling the mud surface. Then, seedlings are planted on the site.
[0016]
The seedling planting part 4 is free to roll around the connection shaft 34. The vertical link 33 is provided with a rolling arm 61 which is rotatable about a rolling center axis 60. The rolling arm 61 and the seedling mounting frame 46 are connected by rolling springs 62, 62, and The planting portion 4 is elastically held at the left and right neutral position. Further, the seedling mounting table 42 and the rolling arm 61 are connected by balance springs 63, 63 so that the left and right balance of the seedling mounting table 42 is maintained even when the seedling planting section 4 is inclined left and right. At the lower part of the rolling arm 61, a sector gear 65 is formed, and a pinion 66 meshes with the sector gear. When the pinion 66 is rotated by the rolling motor 67, the rolling arm 61 rotates, and the right and left inclination of the seedling placement unit 4 is adjusted via the rolling springs 62, 62.
[0017]
In addition, the left and right ends of the support rail 45 are configured to be folded upward while the left and right outer strips of the seedling mounting table 42 are folded upward. The width can be reduced.
[0018]
The fertilizer applicator 5 is provided with fertilizer tanks 70, 70 and fertilizer feeders 71,... On the rear upper side of the traveling vehicle body 1, and on both left and right sides of each float 53, 53, 54, 54, a fertilizer guide 72,. 73,..., And the fertilizer feeding guides 73,... Are connected by flexible fertilizing hoses 74,..., And the fertilizer in the fertilizer hoppers 70, 70 is fed by the fertilizer feeding devices 71,. A certain amount is fed into fertilizing hoses 74,..., And the fertilizer is conveyed to fertilizing guides 73,... By pressurized air generated by a blower 75, and formed near the side of the seedling attachment strip by groove forming tools 72,. Into the ditch for fertilization.
[0019]
On both left and right sides of the traveling vehicle body 2, there are provided drawing markers 80, 80 for drawing on the top soil surface a position where the left and right centers of the body pass in the next stroke. This drawing marker 80 has a drawing action portion 83 attached at a right angle to a tip end of a marker arm 82 that is rotatable about a rotation shaft 81 in the front-rear direction so that the tip of the drawing action portion 83 is grounded. The operation position is turned over, the non-operation position where the marker arm 82 stands almost vertically, and the storage position located inside the non-operation position. Reference numeral 84 denotes a rotation motor for rotating the drawing marker. A pinion 84a attached to the output shaft of the rotation motor 84 meshes with a sector gear 84b attached to the base of the marker arm 82. Further, the drawing action portion 83 is attached to the marker arm 82 so as to be slidable in the axial direction thereof, so that the position of the tip of the drawing action portion 83 at the action position can be adjusted up and down. Reference numeral 85 denotes a vertical movement motor for vertically moving the drawing action portion. An end of a wire 85b wound around a pulley 85a attached to an output shaft thereof is fixed to the drawing action portion 83. Reference numeral 86 denotes a spring 86 that urges the drawing action portion 83 toward the side where the tip projects from the marker arm 82.
[0020]
When the aircraft is advanced with the drawing marker 80 overturned to the action position, the drawing action unit 83 scratches the topsoil surface and draws a line. In the next step, the aircraft is advanced while operating the steering wheel so that the trace of the line and the center mascot 87 visually match.
[0021]
Support members 88, 88 for supporting the drawing markers 80, 80 are attached to stays 89 for supporting the main step 26 and the auxiliary steps 27, 27 so as to be rotatable in a horizontal plane. Therefore, at the time of transportation or storage, the drawing markers 80, 80 together with the support members 88, 88 can be rotated rearward to reduce the left-right width of the traveling vehicle body 2.
[0022]
The drawing marker control device for controlling the operation of the drawing marker is configured as shown in FIG. That is, an automatic / manual switch 91 for switching between automatic control and manual control, a manual lever 92 for manual control, a finger-up lever 93 for raising and lowering the seedling placement section, and marker angle sensors 94L and 94R for detecting the position of a drawing marker. Are connected to the input side of a controller 97 which is a control means, and a left and right inclination sensor 95 which is a detecting means for detecting the horizontal inclination of the body, and a ridge clutch sensor 96 which is for detecting an on / off state of the ridge clutch 50. Rotation motors 84L and 84R and up and down movement motors 85L and 85R are connected to the output side of the controller 97 via relay circuits 98L and 98R. The controller 97 performs the following controls.
[0023]
When the automatic / manual switch 91 is set to “manual”, an output signal is output to the rotation motors 84L and 84R based on the operation position of the manual lever 92. The manual lever 92 is designed to be operated in a cross shape with the neutral point as a starting point. When the manual lever 92 is operated left or right, only the drawing marker 80 on that side falls down to the operation position, and when operated backward, both the left and right drawing markers 80, When 80 falls down to the action position and is operated forward, the rotation motors 84L, 84R are driven so that both the left and right drawing markers 80, 80 rotate to the storage position.
[0024]
When the automatic / manual changeover switch 91 is set to “automatic” in a state where the left and right drawing markers 80 have fallen to the action positions, the finger-up lever 93 is turned to “raise the seedling mounting portion” when turning the machine at the end of the field. , The drawn marker 80 that has fallen stands up at the non-operating position. When the turning is completed and the finger-up lever 93 is operated to “lower the seedling planting portion”, the drawn marker 80 on the opposite side to the previous stroke is moved. Are turned to the operation position, the rotation motors 84L and 84R are driven. Thus, when seedlings are reciprocated in the range of A in FIG. 8, the rising and falling of the drawing markers 80, 80 are automatically performed so that the left and right center positions of the aircraft in the next process are drawn on the topsoil surface. Done. When the seedling placement section 4 is raised to the non-working position by the finger up lever 93, the drive of the seedling placement section 4 and the fertilizer application device 5 is stopped, and the seedling placement section 4 is lowered by the finger up lever 93 to the working position. Then, the seedling planting section 4 and the fertilizer application apparatus 5 are driven.
[0025]
At the time of the automatic control, the vertical movement motor 85L or 85R is driven according to the detection result of the left / right tilt sensor 95 so that the tip of the drawing action portion 83 of the drawing marker 80 at the action position is always in contact with the topsoil surface. As a result, even when one of the wheels (front wheel) 12 falls into the concave portion of the topsoil surface and the body is tilted left and right as shown in FIG. 4, the tip of the drawing action portion 83 rises from the topsoil surface, or draws the wire in reverse. The action portion 83 is not always strongly pressed against the topsoil, and is always kept at an appropriate position.
[0026]
In this drawing marker control device, the vertical movement motors 85L and 85R are used as up and down adjustment means of the drawing action section. However, the rotation motors 84L and 84R are used as up and down adjustment means, and as shown in FIG. By turning the drawing marker 80 as a whole, the tip of the drawing action portion 83 may be controlled so as to always contact the topsoil surface.
[0027]
Further, when it is determined from the detection results of the ridge clutch sensors 96,... That any of the ridge clutches 50 is in the "off" position, the inactive side drawing marker 80 is rotated to the storage position. The driving motors 84L and 84R are driven. When the ridge clutch 50 is set to “OFF”, it is a case where the seedlings are planted near the ridge, and there is a possibility that there is an obstacle right beside the ridge. The control is performed as described above in order to prevent hitting the obstacle.
[0028]
【The invention's effect】
As described above, in the paddy field working machine according to the present invention, when the body is tilted left and right, the drawing marker moves up and down with respect to the topsoil surface, and the drawing action portion of the drawing marker is always appropriate for the topsoil surface. Since the drawing marker is held at the height, the drawing marker rises from the topsoil and does not draw a line, or conversely, the drawing marker is not strongly pressed against the topsoil, and the line is always drawn accurately.
[Brief description of the drawings]
FIG. 1 is a side view of a rice transplanter.
FIG. 2 is a plan view of the rice transplanter.
FIG. 3 is a front view of the rice transplanter showing a horizontal state of the machine body.
FIG. 4 is a front view of the rice transplanter showing a state where the machine body is inclined left and right.
FIG. 5 is a front view of a rice transplanter having a different configuration from FIG.
FIG. 6 is a front view of a seedling planting part.
FIG. 7 is a block diagram of a drawing marker control device.
FIG. 8 is a diagram showing a work order for planting seedlings.
FIG. 9 is a diagram illustrating a state during the seedling planting operation.
[Explanation of symbols]
1 rice transplanter (paddy field machine)
2 Running body 3 Lifting link device 4 Seedling planting part 5 Fertilizer application device 80 Drawing marker 82 Marker arm 83 Drawing device 84 Rotating motor 85 Motor for vertical movement (vertical adjustment means)
91 automatic / manual changeover switch 92 manual lever 93 finger up lever 94 marker angle sensor 95 left / right tilt sensor (left / right tilt detection means)
96 ridge clutch sensor 97 controller (control means)

Claims (1)

In a paddy field working machine that performs agricultural work on a field while advancing the aircraft, a marking marker that is drawn on a topsoil surface to display a position where the aircraft passes in the next process as the aircraft advances is provided on the aircraft, and the marking marker is attached to the topsoil. Up / down adjustment means for up / down adjustment with respect to the surface, detection means for detecting the lateral inclination of the fuselage, and the up / down adjustment in accordance with the detection result of the detection means so that the height of the drawing marker with respect to the topsoil surface is constant. paddy working machine, characterized in that a control means for actuating the adjustment means.

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