JP4193058B2 - Paddy field machine - Google Patents

Description

  The present invention relates to a paddy field work machine such as a riding type rice transplanter.

  Currently, the riding type rice transplanter is equipped with a seedling planting device at the rear of the traveling vehicle body, and when the traveling vehicle body moves forward, it runs a drawing marker for drawing on the topsoil surface where the traveling vehicle body passes in the next stroke. They are provided on the left and right in the forward direction of the vehicle body (Japanese Patent Laid-Open No. 2003-9610).

In addition, the applicant has developed a rice transplanter that not only alternately turns one of the pair of drawing markers provided on the left and right sides of the traveling vehicle body into an operating state, but also allows them to both fall down and put into an operating state at the same time. (JP-A-5-30805).
JP 2003-9610 A Japanese Patent Application No. 5-30805

  In the invention described in Japanese Patent Application No. 5-30805 filed by the applicant, the marker switch is switched by the “on” and “off” operations of the planting lever during turning, and the two solenoids are switched by the switch. Excited alternately, one of the left and right drawing markers falls down and moves to the drawing action position.The operation that turns into the drawing action position is repeated alternately with the left and right drawing markers, and the marker operation changeover switch is turned on. When the marker switch is switched by turning on and off the planting lever during turning, both solenoids are excited and both the left and right drawing markers fall down and move to the drawing action position. It is a configuration.

  Therefore, even if the drawing marker can be alternately activated one by one, the drawing marker on the heel side is set to a non-drawing state so that the drawing marker does not ride on the cocoon at the time of seedling planting at the heel. There is a need.

  As described above, the prior art invention uses the left and right line drawing markers in the left and right line drawing state at the same time, or uses only one of the left and right line drawing markers alternately in the line drawing state, or uses the left and right line drawing markers. At the same time, there is only a method of making the drawing state in a non-drawing state, and there is no configuration in which the drawing marker on the shore side is put in a non-drawing state so that the drawing marker does not ride on the kite.

  Therefore, an object of the present invention is to provide a paddy field work machine that can draw the left and right drawing markers at the same time in the left and right directions, and can set any one drawing marker at the left and right at the drawing state. is there.

The problems of the present invention are solved by the following means.
According to the first aspect of the present invention, the seedling planting portion 4 is provided on the traveling vehicle body 2, and the drawing markers 53, 53 for drawing on the topsoil surface through which the traveling vehicle body 2 passes in the next stroke as the traveling vehicle body 2 moves forward. Is provided on the left and right in the forward direction of the traveling vehicle body 2, and a single operation is performed to hold the left and right line drawing markers 53, 53 at either the action position for drawing on the topsoil surface or the storage position for no line drawing. In the paddy field work machine provided with the drawing marker driving device 82 that can be operated by means, when the left and right drawing markers 53, 53 are switched from the drawing state, which is the working position for drawing the left and right drawing markers 53, to the non-drawing state, This is a paddy field work machine having a configuration in which the drawing marker 53 on the outside of the turn is switched and operated first.

  According to the first aspect of the present invention, various turning operations (for example, a turning operation using a steering wheel) of the traveling vehicle body 2 are performed when switching from a drawing state, which is an operation position for drawing the left and right drawing markers 53, 53 together, to a non-drawing state. ) And the drawing marker 53 on the outside of the turn is switched first to reduce the driving load of the drawing marker driving device 82, and the drawing marker 53 on the outside of the turn is switched to the non-drawing state first. Since it starts to operate, it is possible to prevent the drawing marker 53 outside the turning from interfering with the bag.

  A six-row planting type rice transplanter as an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is an overall side view of the riding type rice transplanter of this embodiment, and FIG. 2 is a plan view of the rice transplanter of FIG.

  In this rice transplanter 1, a seedling planting part 4 as an agricultural work machine part is connected to a rear side of the traveling vehicle body 2 via a lifting and lowering connecting device 3 so as to be lifted and lowered. The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and 10 and rear wheels 11 and 11 which are drive wheels. A mission case 12 is disposed at the front of the fuselage. Front wheel final cases 13 and 13 are provided on the left and right sides of the front wheels, and front wheels 10 and 10 are attached to front wheel axles that protrude outward from a front wheel support portion that can change the steering angle of the front wheel final cases 13 and 13. . Further, the front end portion of the main frame 15 is fixed to the rear portion of the transmission case 12, and the rear wheel gear case 18 is supported by a rear wheel rolling shaft provided horizontally in the front and rear at the center of the rear end of the main frame 15. The rear wheels 11 and 11 are attached to the rear wheel axle that is supported in a freely rolling manner and projects outwardly from the rear wheel gear cases 18 and 18.

  The engine 20 is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the transmission case 12 via a first belt transmission device 21 and a second belt transmission device 23 capable of continuously variable transmission. Then, after being shifted by the transmission in the transmission case 12, the power is separated into traveling power and external power to be extracted.

  A part of the traveling power is transmitted to the front wheel final cases 13 and 13 to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear cases 18 and 18 to drive the rear wheels 11 and 11. Further, the external take-out power is transmitted to a planting clutch case 25 provided at the rear portion of the traveling vehicle body 2, and then transmitted to the seedling planting unit 4 through a planting transmission shaft 26.

  The upper part of the engine 20 is covered with an engine cover 30, and a seat 31 is installed thereon. A front cover 32 that houses various operation mechanisms is provided in front of the seat 31, and a handle 34 for steering the front wheels 10 and 10 is provided above the front cover 32. The engine cover 30 and the front cover 32 have horizontal floor steps 35 on the left and right sides of the lower end. The rear portions of the front cover 32 and the floor step 35 are rear steps 36 that are higher than the floor step 35. On both the left and right sides of the front part of the traveling vehicle body 2, spare seedling platforms 38, 38 on which replenishment seedlings are placed are provided so as to be rotatable between a position projecting laterally from the machine body and a position housed inside. ing.

  The lifting and lowering connecting device 3 has a parallel link configuration, and includes a single upper link 40 and a pair of left and right lower links 41 and 41. The links 40, 41, 41 are rotatably supported at the base side by a link base frame 42 erected at the rear end of the main frame 15, and a vertical link 43 is connected to the tip side. And the connecting shaft 44 rotatably supported by the seedling planting part 4 is inserted and connected to the lower end part of the vertical link 43, and the seedling planting part 4 is connected so as to be able to roll around the connecting shaft 44.

  A piston rod of a lifting hydraulic cylinder 45 whose base is pivotally attached to the main frame 15 is connected via a spring to the tip of a seedling support frame 46 formed integrally with the upper link 40, and the cylinder 45 is hydraulically connected. By extending and contracting, the upper link 40 rotates up and down, and the seedling planting part 4 moves up and down while maintaining a substantially constant posture.

  The seedling planting section 4 has a six-row planting structure, a transmission case 50 that also serves as a frame, a seedling mounting platform 51 that carries seedlings and reciprocates left and right to feed seedlings one by one to the seedling extraction outlets 51a. , A seedling planting device 52 for planting seedlings supplied to the seedling outlet 51a,..., And a pair of left and right drawing markers 53L, 53R for drawing the machine course in the next stroke to the topsoil surface.

  In the lower part of the seedling planting part 4, a center float 55 is provided in the center, and side floats 56, 56 are provided on the left and right sides thereof. When the aircraft is advanced with these floats 55 and 56 in contact with the mud surface of the field, the floats 55 and 56 slide while leveling the mud surface, and the seedlings are planted by the seedling planting devices 52. Planted. Each of the floats 55 and 56 is pivotably attached so that the front end side moves up and down according to the unevenness of the field soil surface. Up and down movement of the front part of the center float 55 is detected by a vertical movement detection mechanism during planting work. Then, according to the detection result, the planting depth of the seedling is always kept constant by switching the hydraulic valve that controls the lifting hydraulic cylinder 45 to raise and lower the seedling planting unit 4.

  Although the seedling planting part 4 is not shown in detail, the seedling mounting table 51,... Is slidable left and right by the power on the traveling vehicle body via the planting transmission shaft 26 (FIG. 1). By reciprocating left and right, the seedling located at the lowermost stage of the seedling stage 51 is supplied to the seedling outlet 51a (FIG. 2), and the seedling device 52,... When the seedling platforms 51,... Move to the end of the left and right stroke and all the seedlings at the lowest stage are planted, the seedling feeding belt 60 is operated to transfer the seedlings on the stage downward by one stage.

  Further, a hook clutch 103 (FIG. 6) that switches the operation and stop of the planting device 52 by two adjacent units is provided in the transmission case 50. Since the clutch 103 is often operated to “disengage” at the time of work at the heel side, it is usually called the above-mentioned “畦 clutch”. The hook clutch 103 (FIG. 6) is turned on and off by the hook clutch lever 54 provided on the handle post.

At this time, in the case of a 6-row planting rice transplanter, the heel clutch lever 54 is provided for each of the two seedling planting tools 62.
3 and the front view of FIG. 4, when the marker wires 81L and 81R interlocked with the raising / lowering operation of the seedling planting unit 4 are drawn, the drawing markers 53L and 53R are shown. When the marker wires 81L and 81R are returned, the drawing markers 53L and 53R fall over due to the tension of the springs 92L and 92R. The drawing markers 53L and 53R are not drawn to the topsoil portion of the field in the standing (storage) posture, and are drawn to the topsoil portion of the field in the fall posture.

Next, the operation mechanism of the drawing marker 53 will be described.
As shown in FIGS. 1 and 2, the drawing marker driving device 82 is provided with a marker 53 at the center of the plate 63 that spans the support member 58 of the seedling placement table 51 provided on the center float 55 and the side float 56. A drive device 82 is provided.

  The driving device 82 of the marker 53 is provided with a disk 86 having a motor 86 supported by a support plate 83 and a gear 86a meshing with a gear 85a provided on a rotating shaft portion of the motor 85 in the peripheral portion. . The rotating shaft 86 b of the disc 86 also serves as the rotating shaft of the cam 84 that passes through the disc 89 and is provided on the opposite surface side of the support plate 83.

  The disc 89 is formed by connecting the chords of the long-diameter semi-disc and the short-diameter semi-disc to operate the switches 87a and 87b for detecting the position of the cam 84 provided on the same side as the disc 86 of the support plate 83. It is the shape which joined together.

  The switches 84a and 87b for detecting the position of the cam 84 are arranged at positions where the phase of the disk 89 is shifted by 90 degrees, and the switch is turned on when the semicircular disk on the long diameter side of the disk 89 comes into contact. When the semicircular plate on the short diameter side passes in front of the switches 87a and 87b, the switches 87a and 87b are turned off, so that the marker 53 is left, left, right, and inactive. Can be controlled.

  The cam 84 is configured such that the rotatable rollers 90R and 90L provided at the end portions on the base side of the pair of L-shaped arms 80R and 80L for driving the pair of markers 53R and 53L are in contact with the side surfaces thereof. The pair of L-shaped arms 80R and 80L are supported so as to be rotatable about rotation shafts 80Ra and 80La provided on the support plate 83. The left and right marker driving wires 81R and 81L are connected to the distal ends of the pair of L-shaped arms 80R and 80L, and the ends of the pair of L-shaped arms 80R and 80L are supported by the support plate 83. The springs 92R and 92L are always urged toward the sides where the tip portions approach each other. When the tip ends of the pair of L-shaped arms 80R and 80L are biased toward the sides approaching each other, the marker 53 is in an upright state and is not drawn on the field.

  When the pair of L-shaped arms 80R or 80L is rotated by the motor 85 and the roller 90R or 90L comes into contact with the large diameter portion of the cam 84, the movement of the pair of L-shaped arms 80R or 80L loosens the wires 81R and 81L. Then, the marker 53R or 53L falls to the line drawing position in the field and performs line drawing. Further, when the roller 90R or 90L comes into contact with the small diameter portion of the cam 84 by the rotation of the motor 85, the wires 81R and 81L are pulled by the movement of the pair of L-shaped arms 80R or 80L, and the marker 53R or 53L stands up. .

  In the marker driving device 82 having the above-described configuration, the geared disk 86 is rotated by the rotation of the motor 85, and the cam 84 that rotates integrally with the disk 86 moves to a position (marker standing position) that is initially close to each other. A pair of L-shaped arms 80R and 80L swing to drive the wires 81R and 81L. If the rotation of the motor 85 is a right rotation in FIG. 4, for example, the L-shaped arm 80L for the left marker swings and the left marker 53L is turned over. At this time, based on the shape of the cam 84, the L-shaped arm 80R for the right marker maintains the initial position.

  When the rotation of the motor 85 is in the direction opposite to that described above, the L-shaped arm 80R for the right marker swings to the left (dotted line side), the right marker 53R falls, and the left marker 53L stands up (stored). It becomes.

  Further, as shown in FIG. 5, two switches 87a and 87b for detecting the rotational position of the disk 89 rotating integrally with the cam 84 are arranged in the marker driving device 82 of the present embodiment, and the left and right drawing markers 53 and 53 are drawn. The movement from the setting to the position and the drawing from the drawing position will be described.

  The two switches 87a and 87b are provided at positions shifted 90 degrees from the rotation locus of the disk 89, and the shape of the disk 89 is formed by connecting semicircular members having two large and small circumferential radii into a substantially disk shape. Something is used.

  When the disk 89 is counterclockwise (counterclockwise), the first switch 87a contacts the large radius portion of the disk 89 in the state shown in FIG. At this time, since the second switch 87b faces the small radius portion, it does not come into contact with the disk 89. In the state shown in FIG. 5B, the first and second switches 87a and 87b are both disk 89 '. Do not touch. In the state shown in FIG. 5C, the first switch 87a faces the small radius portion and does not contact the disk 89, but the second switch 87b contacts the large radius portion of the disk 89. In the state shown in FIG. 5D, the first and second switches 87a and 87b are both in contact with the disk 89.

When the disc 89 is clockwise (clockwise), in the state shown in FIG. 5A, the first and second switches 87a and 87b are both in contact with the disc 89, and the state shown in FIG. 5B. Then, the first switch 87 a contacts the disk 89, and the second switch 87 b does not contact the disk 89. Further, in the state shown in FIG. 5C, the first and second switches 87a and 87b are not in contact with the disc 89, but in the state shown in FIG. 5D, the first switch 87a is in contact with the disc 89. However, the second switch 87b contacts the disc 89.
This is shown in Table 1.

  As shown in Table 1, there are four types of setting conditions, whether the disk 89 is counterclockwise or clockwise, so that each of the left and right line drawing markers 53L and 53R is set to the line drawing position. It is possible to correspond to four types of storage operation from the drawing position. Further, when the switches 87a and 87b are operated in two types of rotation directions of the disk 89, the operation modes of the eight types of left and right drawing markers 53L and 53R can be made to correspond.

  Therefore, the operation modes of many left and right drawing markers 53L and 53R can be set at low cost, which is advantageous in terms of cost.

Moreover, the principal part of a seedling planting apparatus is shown in FIG. 6 (rear view) and FIG. 7 (side view).
Engine power is transmitted to the transmission shaft 4a by the bevel gear mechanism in the seedling planting tool transmission gear case 101 of the planting transmission case 102. When the planting clutch 103 is engaged, the claw (not shown) of each seedling planting tool 62 is driven by the chain 106.

  Further, a lead cam that moves to the left and right while engaging a protrusion provided on the inner peripheral portion toward the central axis in a groove 107a provided on the lead cam shaft 107 that is rotating continuously from the seedling planting transmission gear case 101. The seedling stand 51 connected to 108 moves to the left and right.

  When the lead cam 108 moves left and right, for example, when it moves to the left, the left and right lateral feed pieces (with one-way clutch) 109a and 109b in which the seedling vertical feed cam 107b at the tip of the lead cam shaft 107 is directly connected to the vertical feed transmission shaft 109 Then, when hitting the right lateral feed piece 109b, the transmission shaft 109 is rotated by one planting of the seedling of the longitudinal feed belt 60 (FIG. 2). The transmission shaft 109 is interlocked with the shaft of the roller 111, and when the drive side clutch body 112 and the roller 111 are engaged, the longitudinal feed belt 60 for three strips can be moved by one planting of the seedling. .

  The motor base of the marker driving device 82 shown in FIGS. 6 and 7 is provided above the seedling vertical feed cam 107b. Although the wire 81 is routed in the vicinity of the seedling vertical feed cam 107b in the conventional apparatus, the wire drawing marker 53 is provided with a relatively long wire 81. Therefore, the seedling vertical feed cam 107b in which the wire 81 rotates is arranged. I was caught in and cut off. However, when the arrangement shown in FIG. 6 is adopted, the motor base is located above the seedling vertical feed cam 107b, so that the wire 81 is not caught by the rotating seedling vertical feed cam 107b.

  Further, by providing a motor 85 for driving the marker on the opposite side of the seedling mounting table 51 with the support plate 83 interposed therebetween, mud from a hole for arranging the seedling feeding belt 60 of the seedling mounting table 51 is prevented from the motor. It will not bite into the 85 gear.

  When leveling the headland in the field, the center float 55 of the seedling planting section 4 may turn while being lowered. This may be referred to as a floating turn. Even if it does not rise to the uppermost position or the seedling planting part 4 does not move up and down, the drawing marker 53 can be switched.

  Here, in consideration of prevention of breakage of the drawing marker 53 due to soil resistance, when the seedling planting part 4 is raised and turned, the seedling planting part 4 is raised prior to the operation of the handle 34. It is preferable that the drawing marker 53 is interlocked with the rise of the portion 4. Therefore, it is desirable to perform control such that the drawing marker 53 is operated at an appropriate timing according to various turning patterns including a floating turn.

  The feature of the present embodiment is that when both the drawing markers 53, 53 are in the drawing state ("double exit"), the marker 53 outside the turning starts to switch to the non-drawing state first, so This is to prevent the drawing marker 53 from interfering with the eyelids.

  When planting seedlings while leaving the circumferential planting runway at the heel, the drawing marker 53 on the heel side of the left and right drawing markers 53, 53 is changed to the drawing marker 53 in the other drawing operation state. It is necessary to perform control to make it inactive in advance.

  When the left and right line drawing markers 53 are both switched from the line drawing state to the non-line drawing state, the left and right line drawing markers 53, 53 are switched by various turning operations using the handle 34 and the line drawing marker 53 outside the turning is switched first. The operation control is performed while reducing the drive load of the drive device 82 by providing a time lag of operation between the two.

A control block diagram and a control flowchart for this are shown in FIGS. 8 and 9, respectively.
The states (a) to (d) in Table 1 and FIG. 5 are associated with the state of the drawing marker 53 as follows, so that the marker 53 on the outer side of the turn when both the drawing markers 53 and 53 are “both exit”. Switch to the non-drawing state first.

(A) State (a) in FIG. 5 Marker “both above” (both left and right markers are in non-drawing state)
(B) State (b) in FIG. 5 Marker “Left out” (Left marker is drawn)
(C) State (c) in FIG. 5 Marker “both out” (both left and right markers are drawn)
(D) State (d) in FIG. 5 Marker “Right out” (Right marker is drawn)

  In the floating turn mode, when the turning angle of the steering wheel is increased and turning left (step a (FIG. 10)), in the marker “double-out” state of FIG. 5 (c), the disk 89 is turned clockwise. As shown in FIG. 5B, the motor 85 is rotated so that the marker “left” in FIG. 5B, that is, the right marker on the outside of the turn is switched to the non-drawing state first, and the disc 89 is continuously rotated to the right. The left and right markers are “both top”. This state is stored in the controller as “C = 1”, and the process proceeds to the raising / lowering control of the seedling planting device 3 to plant seedlings.

  Further, in the floating turn mode, in the step b (FIG. 11) of turning right by increasing the steering angle, the disk 89 is moved to the left in the marker “double-out” state of FIG. 5 (c). The motor 85 is rotated so as to rotate, the marker “right” in the state of FIG. 5D, that is, the left marker 53 outside the turn is switched to the non-drawing state first, and the disk 89 is further rotated counterclockwise. Subsequently, the left and right markers 53 are set to “both upper”. This state is stored in the controller 120 as “D = 1”, and the process proceeds to the raising / lowering control of the seedling planting device 3 to plant seedlings.

  In the floating turn mode, when the steering wheel is not turned, if “C = 1”, the left and right markers are set to “both” after turning left as shown in step c (FIG. 12A). Since it is in the “up” state, the motor 85 is rotated so as to rotate the disk 89 clockwise, and the marker “right” in FIG. Draw a line at the center of multiple lines in the seedling planting area after turning. If “D = 1”, as shown in step d (FIG. 12B), the right and left markers are in the “both upper” state after turning right, so that the motor moves so that the disk 89 turns counterclockwise. 5 is rotated, and the marker “left out” in the state (b) of FIG. 5, that is, the plurality of seedling planting areas after the next turn in the unseed planting area with the left marker outside the turn being drawn. Draw a line in the center of the rule.

  In this way, by providing a time lag in the operation of the left and right drawing markers 53, 53 so that when both the drawing markers 53, 53 are in the drawing state, the turning outside is switched to the non-drawing state first. The driving load of the driving device 82 of the drawing marker 53 can be reduced, and the drawing marker 53 outside the turning starts to switch to the non-drawing state first, so that the drawing marker 53 outside the turning prevents interference with a bag or the like. There are features that can be done.

  Further, in the step e where the seedling planting device 3 is not in the floating turn mode and the seedling planting device 3 is in the lowered position, that is, in the seedling planting operation, “E = 1” (left and right markers 53, 53 “both above” (( a)) When not in the state), the drawing marker 53 on the opposite side to the marker 53 that was in the drawing state after the previous turn is set in the drawing state and drawing is performed.

  Furthermore, in step f where the seedling planting device 3 is not in the floating turn mode and the seedling planting device 3 is in the raised position, the drawing markers 53, 53 are in the “both out” state (FIG. 5C) or “left out” (FIG. 5B) ) State, the motor 85 is rotated so as to rotate the disk 89 clockwise, and the left and right markers 53, 53 are set to the “both upper” (FIG. 5A) state. This state is stored in the controller 120 as “E = 1”.

  The control block of FIG. 8 is provided with a floating turn mode switch 122, a steering angle sensor 124, a lift link sensor 125, a pitching sensor 126, a rolling sensor 127, and a saddle clutch lever sensor 128.

  Here, the lift link sensor 125 is not shown in FIG. 1, but the link base frame 42 erected on the main frame 15 and the lift upper link 40 that moves up and down the link (connection) device 3. The potentiometer is provided between the lower links 41 and detects the movement of the link (connection) device 3, and can detect that the seedling planting device 3 has been raised to the highest position by manual operation or the like. The angle-of-attack sensor 117 provided at the front part of the center float 55 detects the height of the seedling planting unit 4 with respect to the ground. The control device 120 moves up and down based on the detection value of the angle-of-attack sensor 117. The valve 121 is controlled so that the vertical position of the seedling planting unit 4 is controlled by a lift hydraulic cylinder 45.

  That is, when the angle sensor 117 detects that the front part of the center float 55 has been lifted to an appropriate range or more by an external force, the lift cylinder 45 moves the lifting link device 3 upward to set the seedling planting part 4 in a predetermined manner. The lift cylinder 45 lowers the lifting / lowering link device 3 to move the seedling planting part 4 when the angle sensor 117 detects that the front part of the center float 55 has fallen beyond the proper range. Lower to a predetermined position. When the front part of the center float 55 is in the proper range (when the detected value of the angle-of-attack sensor 117 is in the proper range and the seedling planting part 4 is at the proper ground height), the inside of the lift cylinder 45 It is provided to stop the pressure oil from entering and exiting and to hold the seedling planting part 4 in a fixed position. As described above, the center float 55 is used as a ground sensor for automatic height control of the seedling planting unit 4.

  Further, the pitching sensor 126 corrects the set position of the drawing marker 53 under the control of the marker driving device 82 in accordance with the degree of pitching of the aircraft, so that the depth of the drawing marker 53 is constant regardless of the forward / backward inclination of the aircraft. Therefore, workability is further improved.

  In other words, the set position of the drawing marker 53 is corrected to the lower side when the front is raised in accordance with the front / rear tilt angle of the aircraft, thereby preventing the drawing from being performed when the aircraft is raised up. In particular, when the drawing marker 53 is provided on the traveling vehicle body side (left and right of the front portion of the traveling vehicle body), it can be prevented that the drawing is not performed. It should be noted that in the forwardly lowered state of the machine body, the drawing can be performed without correcting the set position of the drawing marker 53, so that it is not necessary to perform this correction.

  Further, the set position of the drawing marker 53 can be corrected by detecting the left and right tilt angles and the front and rear tilt angles of the airframe by the rolling sensor 127 and the pitching sensor 126, respectively.

  For example, the correction can be performed by setting a correction value of the set position of the drawing marker 53L using the table data of the left drawing marker 53L shown in Table 2. The right line drawing marker 53R also sets a correction value using similar table data.

  As will be described below, the heel clutch lever sensor 128 detects whether the heel clutch 103 of the plurality of seedling planting devices 52 is operating.

  In the case of a six-row planting rice transplanter, as will be described below with reference to FIG. When two of them are in the “cut” state), the drawing marker 53 on the outside of the turn (side) is automatically operated in the non-drawing state so that the drawing marker 53 does not ride on the kite.

  This step is shown as step g in the flowchart of FIG. Here, the same flow as step a or step b is used for step h.

  Next, a description will be given of the operation for preventing the rider from climbing on the saddle of the drawing marker 53 with reference to FIG. For example, as shown in FIG. 18 (a), a seedling is planted while reciprocating in a rectangular field, and a runway for planting at the shore (sometimes called pillow planting or headland planting). When using the method of turning around and planting the last planting runway leaving F (the center of the rice transplanter runs at the center of the rice transplanter in FIG. 18 (b)), to leave the headland planting runway portion In the seedling planting track on the inner side adjacent to, among the seedling planting tools capable of planting a plurality of strips, only a part of the seedling planting tools is operated.

  At this time, more than a majority of the number of strips that can be planted by the rice transplanter by operating the paddle clutch 103 to open the headland for the number of strips that can be planted by the rice transplanter (six strips in the case of 6 strips). When the seedling planting tool 62 is stopped and the drawing marker 53 on the heel side is laid down to the drawing operation state, the drawing marker 53 rides on the heel. For example, as shown in FIG. 18 (b), in order to divide a headland by one row with a 6-row rice transplanter, a planting runway inside the headland planting runway (thick line (b) in FIG. 18 (a) In the runway)), seedlings are planted with the heel clutch 103 of the seedling planting tool 62 for 4 strips turned off so that only 2 strips of planting width (W) are planted. Sometimes.

  Because, in the case of a rice transplanter for planting 6 seedlings, the line drawing marker 53 is designed to draw 6 lines from the center of the rice transplanter, so the center of the six triangle marks (△) If the center of the rice transplanter is running, the drawing marker 53 will not run on the fence. However, if the center of the six-planted rice transplanter is running at the star (*) position, the drawing marker 53 rides on the fence. In other words, in order to open the headland for one stroke, it is necessary to operate the rice transplanter 103 with the seedling planting tools 62 more than a majority of the number of strips that can be planted by the paddle clutch 103 being stopped. It becomes.

  Further, when a method of automatically setting the drawing marker 53 to the drawing state and the non-drawing state is employed, as shown in FIG. 13A (the left figure in the upper stage of FIG. 13), it interlocks with the descending of the seedling planting unit 4. Then, the drawing marker 53 descends from the non-drawing position to the field. At this time, the speed at which the drawing marker 53 descends is faster than the descending speed of the seedling planting unit 4, so even if the drawing marker 53 descends into the field scene. In some cases, the rice transplanter has not completed the turn, so the line trace t ′ of the line drawing marker 53 to be a guide that can be used in a farm scene is a straight line as shown in FIG. 13 (a) (the figure on the right side of FIG. 13). Instead, the result of drawing a large arc was upsetting the operator's sense.

  Therefore, in this embodiment, as shown in FIG. 13B (the left side in the lower part of FIG. 13), the steering angle sensor 124 detects a straight traveling state or the planting clutch 103 is turned “ON”. By delaying the descending timing of the drawing marker 53 after a predetermined time, drawing can be performed so that a linear drawing trace t is formed as shown in FIG. 13B (the diagram on the right side in the lower part of FIG. 13).

  By delaying the descending timing of the line drawing marker 53 in this manner, the rice transplanter enters the straight line travel process and then the marker 53 starts drawing a line, so that the line trace does not bend and the operator's line of sight is distorted. The result is a rice transplanter that is planted straight.

A plan view and a side view of a paddy field working machine (rice transplanter) according to another embodiment of the present invention are shown in FIGS. 14 (a) and 14 (b), respectively.
In the present embodiment, the pulling direction of the drawing marker 53 is directed diagonally forward toward the opposite side of the operator, so that the mud attached to the marker 53 is not applied to the operator when the marker 53 is lifted. When the drawing marker 53 is raised in the vertical direction to the field as in the conventional case, mud is applied to the operator, and such a problem can be prevented.

  In addition, although actual drawing S60-51919 discloses a line-drawing marker 53 that is obliquely raised toward the operator side, in this configuration, the line-drawing marker is raised toward the seat side where the operator is located, that is, the rear side. Although there is a possibility that the operator may get mud, in this embodiment, since the marker 53 is pulled up toward the opposite side of the operator, mud attached to the marker 53 is not applied when the marker 53 is lifted.

  Further, as shown in FIG. 15, the cylindrical horizontal marker 53 used in the electric wire drawing marker 53 is blown to remove the irregularities on the cylindrical side surface.

  Further, as shown in FIG. 16 (perspective view (FIG. 16A)) and exploded view (FIG. 16B), the horizontal marker 53 used in the electric marker 53 is formed by combining two resin molded products 53a and 53b. Then, the rib structure 53c may be inserted into the horizontal marker 53 on the bonding surface side of the horizontal marker 53 so that the unevenness on the surface of the marker 53 is eliminated.

  Moreover, as shown in FIG. 17, it is also possible to provide a structure in which iron plate covers 53d and 53d are provided on both side surfaces of the horizontal marker 53 of the conventional rib structure 53c so as to cover the rib structure and eliminate the surface irregularities.

When the conventional horizontal marker 53 is used for the drawing in the clay field, the rib structure 53c of the horizontal marker 53 lifts mud like the spokes of the wheel, and the rotation resistance increases, and the automatic return of the stay portion and the rib structure Due to the weight of the mud adhering to the body 53c, problems such as poor pulling and mud splashing to the operator occurred.
However, it is possible to prevent mud from adhering to the side surface by blow molding as shown in FIGS. 15 to 17 and making the side surface of the horizontal marker 53 flat.

  The present invention can be applied to paddy field machines such as a riding type rice transplanter.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall side view showing a six-row planting type rice transplanter that is an embodiment of the present invention. It is a top view of the riding type rice transplanter shown in FIG. It is a top view which shows the structure of the drawing marker drive device of one Example of the riding type rice transplanter shown in FIG. It is a front view which shows the structure of the drawing marker drive device of one Example of the riding type rice transplanter shown in FIG. It is a figure explaining the operation | movement aspect of the pull marker 53 drive device of one Example of the riding type rice transplanter shown in FIG. It is a principal part rear view of the seedling planting apparatus of the riding type rice transplanter shown in FIG. It is a principal part side view of the seedling planting apparatus of the riding type rice transplanter shown in FIG. It is a control block diagram of the riding type rice transplanter shown in FIG. It is a flowchart figure for the raising / lowering of the planting apparatus of the riding type rice transplanter shown in FIG. 1, and the operation | movement control of a drawing marker. FIG. 10 is a partial view of the flowchart shown in FIG. 9. FIG. 10 is a partial view of the flowchart shown in FIG. 9. FIG. 10 is a partial view of the flowchart shown in FIG. 9. It is a figure which shows the action | operation timing and drawing mark position of the drawing marker after turning of the riding type rice transplanter of this invention (FIG.13 (b)) and the conventional (FIG.13 (a)). It is the top view (FIG. 14 (a)) and side view (FIG.14 (b)) of the working machine for paddy fields (rice transplanter) of the other Example of this invention. It is a perspective view of the cylindrical horizontal marker used with the electric drawing marker of this invention. It is a perspective view (Drawing 16 (a)) and an exploded view (Drawing 16 (b)) of a cylindrical horizontal marker used with an electric drawing marker of the present invention. It is a perspective view of the cylindrical horizontal marker used with the electric drawing marker 53 of this invention. In the figure explaining the planting method of the seedling in the quadrangular field (Fig. 18 (a)) and the explanatory diagram (Fig. 18 (b)) in the case of obtaining the planting runway at the shore with a 6-row rice transplanter is there.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rice transplanter 2 Traveling vehicle body 3 Elevating connection apparatus 4 Seedling planting part 4
4a transmission shaft 10 front wheel 11 rear wheel 12 transmission case 13 front wheel final case 15 main frame 18 rear wheel gear case 20 engine 21 first belt transmission device 23 second belt transmission device 25 planting clutch case 26 planting transmission shaft 30 engine cover 31 Seat 32 Front cover 34 Handle 35 Floor step 36 Rear step 38 Spare seedling stage 40 Upper link 41 Lower link 42 Link base frame 43 Vertical link 44 Connecting shaft 45 Lifting hydraulic cylinder 46 Seedling stage support frame 50 Transmission case 51 Seedling stage 51a Seedling outlet 52 Seedling planting device 53 Drawing marker 54 Trap clutch lever 55 Center float 56 Side float 58 Support member 60 Seedling feeding belt 62 Seedling planting tool 63 Plate 80R, 80L L-shaped arm 80Ra 80La Rotating shaft 81R, 81L Marker wire 82 Drawing marker driving device 83 Support plate 84 Cam 85 Motor 85a, 86a Gear 86 Disc 86b Rotating shaft 87 Switch 87a First switch 87b Second switch 89 Disc 90R, 90L Roller 92R, 92L Spring DESCRIPTION OF SYMBOLS 101 Transmission gear case 102 Planting transmission case 103 Planting clutch 106 Chain 107 Lead cam shaft 107b Seedling longitudinal feed cam 108 Lead cam 109 Vertical feed transmission shaft 109a, 109b Lateral feed piece 111 Roller 112 Drive side clutch body 117 Angle-of-attack sensor 120 Control device 121 Lifting valve 122 Floating turn mode switch 124 Steering angle sensor 125 Lifting link sensor 126 Pitching sensor 127 Rolling sensor 128 畦 Clutch sensor S

Claims (1)

A seedling planting portion 4 is provided on the traveling vehicle body 2, and line drawing markers 53 and 53 for drawing on the topsoil surface through which the traveling vehicle body 2 passes in the next stroke as the traveling vehicle body 2 moves forward are provided in the forward direction of the traveling vehicle body 2. The drawing marker driving device 82 is provided on the left and right sides, and can be operated by a single operation means to hold the left and right drawing markers 53, 53 at either the action position for drawing on the topsoil surface or the storage position for non-drawing. In the paddy field machine with
When switching from the drawing state, which is the working position for drawing the left and right drawing markers 53, 53, to the non-drawing state, it is performed by various turning operations of the traveling vehicle body 2, and the drawing marker 53 outside the turning operation is switched first. A paddy field machine characterized by having a configuration.

Images