JP4390064B2 - Seedling transplanter - Google Patents

Description

  The present invention relates to a seedling transplanter such as a riding rice transplanter.

In currently used seedling transplanters, the width of the seedling platform is widened when planting seedlings, and the right and left outer ends of the seedling platform are folded when traveling without planting seedlings or when stored in the garage. There is a configuration that can narrow the width of the.
For example, a 10-row seedling transplanter has a width of 6 even when the left and right sides of the seedling stand are folded, which may cause problems when the seedling transplanter runs or is stored in the garage. .

Therefore, for example, as disclosed in Japanese Patent Application Laid-Open No. 11-113333, the left and right widths of the seedling stage are moved by moving the seedling placement part located at the left and right outer ends of the seedling stage when not working. Making it smaller is disclosed.
In this specification, the left and right directions in the forward direction of the seedling transplanter are referred to as left and right, respectively.
Japanese Patent Application Laid-Open No. 11-113333

  In the invention described in Japanese Patent Application Laid-Open No. 11-113333 filed by the present applicant, the seedling is formed of a support frame constituted by a single horizontal frame that connects between a pair of upper and lower frames extending in the vertical direction at both left and right ends. Although it supports the platform, when trying to narrow the width of the seedling planting part in the left-right direction, the seedling platform located at the left and right outer ends is folded inward together with the rotating part of the horizontal frame to The left and right width can be reduced.

However, in the seedling transplanting machine, a motor for operating the drawing marker and a hose of a fertilizer are arranged on the back of the seedling mounting base, depending on the type, and these devices and the seedling mounting base are connected to the upper and lower frames on both ends. Since it is supported by the horizontal frame of the book, it cannot be said that it has sufficient strength.
In addition, since the left and right widths of the seedling stand differ depending on the number of planting strips, it was necessary to prepare a horizontal frame that is long on the left and right according to the number of planting strips.

  Therefore, the object of the present invention is to support the seedling planting part with a simple structure and with sufficient strength, and can be used with either a type using a fertilizer or a type without using a fertilizer, and is exchanged according to the number of planting strips. It is an object of the present invention to provide a seedling transplanter that can reduce assembly costs by miniaturizing parts.

The problems of the present invention are solved by the following means.
The invention according to claim 1 is supported by the support frames 65 to 68 and supplies seedlings one by one onto the seedling stage 51 provided so as to be movable left and right and the seedling outlet 51a of the seedling stage 51, In the seedling transplanting machine provided with the planting device 52 for planting the seedling supplied to the seedling outlet 51a in the field, the support frames 65 to 68 move left and right through the left and right movement guide unit 111 in the upper part of the seedling mounting base 51. The upper and lower frames 65a to 65c, which are arranged in parallel on the left and right sides so as to support the upper and lower frames 65a to 65c, and the center frame 65b of the three upper and lower frames 65a to 65c are connected between the left frame 65a, A pair of first horizontal frames 67a and 67b fixed so as not to be removed from the two upper and lower frames 65a and 65b, and the remaining one right frame 65c and the central frame 65b are detachably connected. And a pair of first horizontal frames 68a and 68b, and a seedling transplanter in which a line marker driving device 82 for driving the field line quotation line marker 53 is disposed between the pair of first horizontal frames 67a and 67b. is there.

  According to the first aspect of the present invention, the first horizontal frames 67a and 67b that connect between the center frame 65b of the upper and lower frames 65a to 65c in the support frames 65 to 68 of the seedling stage 51 and the left frame 65a. Is fixed to the upper and lower frames 65a and 65b by welding or integral molding so that they cannot be removed, and once they are assembled, the subsequent mounting operation becomes unnecessary, so that the manufacturing cost is relatively low.

  In addition, since the entire horizontal width of the support frames 65 to 68 can be changed according to the size in the horizontal width direction of the seedling planting part 4 by exchanging the second horizontal frames 68a and 68b, the replacement parts, that is, the second horizontal frame 68a and 68b are easy to handle, the assembly cost (man-hours) can be reduced, the number of planting strips can be accommodated, and versatility is enhanced.

  Further, since the two fixed first horizontal frames 67a and 67b and the second horizontal frames 68a and 68b can be spanned over the three upper and lower frames 65a to 65c, the entire support frames 65 to 68 can be configured. 68 is compact and provides a support structure with good accuracy and high strength.

  A seven-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 at the front and rear of the rear end of the main frame 15 in the horizontal direction. The rear wheels 11 and 11 are attached to a 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 pivotable between a position projecting laterally from the machine body and a position stored 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 seven-row planting structure, a transmission case 50 that also serves as a frame, and a seedling mounting base 51 that feeds seedlings to the seedling extraction outlets 51a of each row by placing the seedlings and reciprocating left and right. , 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 mid floats 57, 57 and side floats 56, 56 are provided on the left and right sides, respectively. When the aircraft is advanced with these floats 55, 56, 57 in contact with the mud surface of the field, the floats 55, 56 slide while leveling the mud surface, and the seedling planting device 52,. Seedlings are 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.

  The seedling planting section 4 is slidable left and right by the power on the traveling vehicle body through the planting transmission shaft 26 (FIG. 1), and the seedling placement section 4 is slidable left and right. A seedling located at the lowest stage of the platform 51 is supplied to a seedling outlet 51a (FIG. 2), and the seedling planting 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. 8) 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 be “disengaged” at the time of work at the heel side, it is usually called “the heel clutch” described above. The hook clutch 103 (FIG. 8) 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.
The seedling stage 51 is provided so as to be movable left and right. The seedlings are supplied one by one onto the seedling outlet 51a, and the seedlings are planted in the field by the planting device 52. FIG. 3 shows the seedling stage. The rear view of 51 support frames is shown.

  The support frame is provided with three upper and lower upper and lower frames 65a to 65c that support the upper part of the seedling platform 51 so as to be movable left and right via rollers 111 that are left and right movement guides. A horizontal frame 66 that spans 65c, and a pair of first horizontal frames 67a and 67b that connect between the two upper and lower frames 65a and 65b in the center of the left and right sides of the three upper and lower frames 65a to 65c. An attachment portion is provided that can be attached to the frames 65a and 65b by welding or the like so that it cannot be removed and between which the drawing marker driving device 82 can be attached between the pair of horizontal frames 67a and 67b.

  The pair of second horizontal frames 68a and 68b that connect between the remaining one upper and lower frame 65c and the central upper and lower frame 65b are detachable from the two upper and lower frames 65b and 65c, respectively. The horizontal frames 67b and 68b also serve as a support frame for the fertilizer hose 64.

  A guide roller 111 of the seedling stage 51 is attached to the upper ends of the three upper and lower frames 65a to 65c, and a planting transmission case 102 having a seedling planting tool 62 at the lower ends of the three upper and lower frames 65a to 65c. Are connected.

Since the first horizontal frames 67a and 67b and the upper and lower frames 65a and 65b provided with the attachment portions in the above configuration are fixed by a method such as welding or integral molding so that they cannot be removed, they can be manufactured at low cost.
In addition, by changing the second horizontal frames 68a and 68b, the entire left and right widths of the frames 65 to 68 can be changed in accordance with the size of the seedling planting part 4 such as the number of seedling mounts 51 installed. The versatility of is increased.
Further, since the support frame structure of the seedling planting part 4 has a compact structure and strength, the seedling stage guide roller 111 can be attached to the upper ends of the upper and lower frames 65a to 65c.

  Further, a drawing marker driving device 82, which is an essential configuration in the seedling transplanter, is arranged between the pair of upper and lower frames 65a and 65b on the left side of FIG. 3, and the center of gravity of the entire support frame structure is set to the left side of the drawing. In such a seedling transplanter that does not use the fertilizer 61, even if the right second horizontal frame 68b and fertilizer hose 64 are removed, the planting transmission case 101 is located on the right side. The balance in the left-right direction can be maintained.

  FIG. 4 shows a schematic side view of the seedling planting unit 4, and a marker wire (not shown) of the left and right drawing markers 53 is passed between the seedling mounting platform 51 and the fertilizer hose 64. As a result, the marker wire is guarded by the fertilization hose 64 and the upper and lower frames 65 in the front and rear, so that the marker wire is not caught on the rear wheel 11 and all the parts are neatly stored and the appearance is beautiful.

  Further, when the marker wires 81L and 81R that are interlocked with the raising and lowering operation of the seedling planting unit 4 are drawn as shown in the plan view of FIG. 5 and the front view of FIG. 6 in the front view of the drawing marker, the drawing markers 53L and 53R are drawn. 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.
The drive device 82 for the drawing marker 53 is provided with a disk 86 having a peripheral portion including a motor 85 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. Yes. 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 drawing position of the field and performs 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. 6, 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, according to FIG. 7, 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 drawing of the left and right drawing markers 53 and 53 is performed. 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 contact the disk 89, and in the state shown in FIG. 7B, the first and second switches 87a and 87b are both the disk 89 '. Do not touch. Further, in the state shown in FIG. 7C, 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. 7D, the first and second switches 87 a and 87 b are both in contact with the disk 89.

When the disk 89 is clockwise (clockwise), in the state shown in FIG. 7A, the first and second switches 87a and 87b are both in contact with the disk 89, and the state shown in FIG. 7B. 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. 7C, the first and second switches 87a and 87b are not in contact with the disk 89, but in the state shown in FIG. 7D, the first switch 87a is in contact with the disk 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. 8 (rear view) and FIG. 9 (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. 8 and 9 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. 8 is employed, 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 round 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 other drawing marker 53 in the 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. 10 and 11, respectively.
7, the state of (a) to (d) in FIG. 7 is related to the state of the drawing marker 53 as follows, so that the marker 53 on the outer side of the turn when both drawing markers 53 and 53 are “both exit”. Switch to the non-drawing state first.

(B) State (a) in FIG. 7 Marker “both above” (both left and right markers are in non-drawing state)
(B) State (b) in FIG. 7 Marker “Left out” (Left marker is drawn)
(C) State (c) of FIG. 7 Marker “both out” (both left and right markers are drawn)
(D) State (d) in FIG. 7 Marker “Right out” (Right marker is drawn)

  In the floating turn mode, the turning angle of the steering wheel is increased, and when turning left (step a (FIG. 12)), in the marker “double-out” state of FIG. Rotate the motor 85 to switch the marker “left out” in the state of FIG. 7B, that is, the right marker on the outside of the turn to the non-drawing state first, and continue to rotate the disc 89 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 step b (FIG. 13) in which the steering angle is increased and the vehicle turns to the right, in the marker “double-out” state in FIG. The motor 85 is rotated so as to rotate, the marker “right” in the state of FIG. 7D, that is, the left marker 53 on the outside of the turn is switched to the non-drawing state first, and the disc 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. 14A). 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. 14 (b)), the left and right markers are in the “both upper” state after turning right, so that the disc 89 is turned counterclockwise. A plurality of the seedling planting areas after the next turn in the unsown seedling planting area with the marker “left out” in the state of FIG. 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.

  When the seedling planting apparatus 3 is not in the floating turn mode and the seedling planting device 3 is in the lowered position, that is, during seedling planting work, “E = 1” (left and right markers 53, 53 “both above” (FIG. 7 (A) state)), the line drawing marker 53 on the opposite side to the marker 53 that was in the line drawing state after the previous turn is set in the line drawing state for drawing.

  Further, in step f where the seedling planting device 3 is not in the floating turn mode and in the step f, the drawing markers 53 and 53 are in the “both out” state (FIG. 7C) or “left out” as in step a. In the state (FIG. 7B), the motor 85 is rotated so as to rotate the disk 89 clockwise, so that the left and right markers 53, 53 are in the “both upper” state (FIG. 7A). Further, when the markers 53 and 53 are in the “right-out” state (FIG. 7D), the motor 85 is rotated so as to turn the disk 89 counterclockwise, and the left and right markers 53 and 53 are moved “both above” ( The state shown in FIG. This state is stored in the controller 120 as “E = 1”.

  The control block of FIG. 10 is provided with a floating turn mode switch 122, a steering angle sensor 124, a lifting 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.

  FIG. 1 shows a side view of the state in which the right end seedling stage 51 is folded inward. At this time, the blinker 51b provided on the right end part seedling stage 51 is visible from the operator seated on the seat 31 and the front of the machine body. The long seedling tank 51c (having a gap in the vertical lattice shape) at the upper part of the seedling placing stand 51 in the center is arranged at a position where it can be seen.

  Thus, since the right and left width is wide in the seedling transplanting machine for 7-row or 8-row planting, the right and left winkers are used not only when folding the right end of the seedling stand 51 but also when traveling on the road. Since 51b can be seen well from the operator and the outside of the machine, safe driving can be performed.

  Since the seedling transplanter generally does not have the turn signal 51b near the seat 31, the above configuration does not increase the number of parts, and the seedling mounting platform 51 is not only folded when one section of the seedling mounting platform 51 is not folded. You can also drive safely when the right end of the is folded.

  The rice planting machine for 7 or 8 planting folds one section of the end of the seedling stand 51 and travels or runs on the road. At this time, the width of the entire seedling planting part 4 in the left-right direction In particular, when one line at the end of the seedling stage 51 on the side opposite to the side where the driving device 82 of the drawing marker 53 is arranged is folded, the heavy object is distributed to the left and right, so The weight balance is improved.

  A rubber mat 70 is often laid on the floor step 35 shown in FIG. 15, but a resin step 71 is disposed under the rubber mat 70. At this time, a hole 70 a was provided in the rubber mat 70. Also, the resin step 71 disposed under the rubber mat 70 is provided with a convex portion 71 a at a position corresponding to the hole 70 a of the rubber mat 70, and the convex portion 71 a is inserted into the hole portion 70 a and stopped by the grip 72. At this time, since the hole 70a of the rubber mat 70 has been extended so that the rubber mat 70 is detached from the floor step 35, the rigid body 73 is fixed to the rubber mat 70 in the vicinity of the hole 70a and the resin step 71 in order to improve the problem. The rigid body 73 is adhered to the rubber mat 70 or molded integrally with the rubber mat 70 and attached. A grip 72 is provided at a portion where the resin step convex portion 71a protrudes from the rubber mat hole portion 70a.

  Thus, the rubber mat 70 is not inadvertently detached from the floor step 35 by integrally fastening the resin step convex portion 71a inserted into the rubber mat hole portion 70a to the rigid body 73.

  FIG. 16 shows a new configuration of the rear step 36. When attaching the fertilizer application device 61 to the seedling transplanter, remove the rear half 36a of the rear step 36 from the cutting line x as shown in FIG. There was no choice but to discard it. In addition, a fertilizer application step 36b is attached to the rear step 36 in order to carry fertilizer into the fertilizer tank 69 of the fertilizer application 61.

However, since this is a great waste, the rear half 36a of the rear step 36 can be moved back and forth as shown in FIG. 16 (a) so that the fertilizer 61 can be attached to the seedling transplanter and not attached. Make the configuration.
The rear half 36a of the rear step 36 is moved back and forth as follows. That is, the knob 37 is provided in the rear step body, the oblong holes 36c into which the knob 37 is inserted are provided on both sides of the rear step 36, and when the fertilizer 61 is provided, the rear step rear half 36a is advanced. Secure the area for the fertilizer application behind the rear step. When the fertilizer 61 is not provided, the rear step 36 is moved backward.

  Thus, not only can the number of parts and the processing cost be significantly reduced, but the fertilizing step 36b that has been conventionally attached is not necessary, and the fertilizing step 36b does not interfere with maintenance of the engine 20 or the like. When the fertilizer application step 36b is eliminated, the scaffolding for the rear step 36 can be taken widely.

  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 the partially developed rear view which shows the seedling mounting stand support frame of the seedling planting part 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 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. 12 is a partial view of the flowchart shown in FIG. 11. FIG. 12 is a partial view of the flowchart shown in FIG. 11. FIG. 12 is a partial view of the flowchart shown in FIG. 11. It is the partial cross section figure (Fig.15 (a)) of the floor step of the riding type rice transplanter shown in FIG. 1, and the partial cross section figure (FIG.15 (b)) of the conventional floor step. It is the partial perspective view (FIG. 16 (a)) of the rear step of the riding type rice transplanter shown in FIG. 1, and the partial perspective view (FIG. 16 (b)) of the conventional floor step.

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 36a Rear step rear half 36b Fertilizer rear step
36c Long hole 37 Knob 38 Preliminary 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 51b Winker 51c Long seedling tank 52 Seedling planting device 53 Drawing marker 54 畦 Clutch lever 55 Center float 56 Side float 58 Support member 60 Seedling feed belt 61 Fertilizer device 62 Seedling planting tool 64 Fertilization hose 65a-65c Vertical frame 66 Horizontal frame 67a, 67b First horizontal frame 68a, 68b Second horizontal frame 69 Fertilizer tank 70 Rubber mat 71 Resin step 70a Rubber mat hole 71a Resin step convex 72 Grip 73 Rigid body 80R, 80L L-shaped arm 80Ra, 80La Rotating shaft 81R 81L Marker wire 82 Drawing marker drive 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 101 Transmission gear case 102 Planting transmission case 103 Planting clutch 106 Chain 107 Lead cam shaft 107b Seedling vertical 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 Elevating link sensor 126 Pitching sensor 127 Rolling sensor 128 畦 Clutch sensor

Claims (1)

The seedlings are supported by the support frames 65 to 68 and are supplied to the seedling outlet 51a by supplying the seedlings one by one onto the seedling stage 51 provided so as to be movable left and right and the seedling outlet 51a of the seedling stage 51. In a seedling transplanter equipped with a planting device 52 for planting seedlings in a field,
The support frames 65 to 68 include three upper and lower frames 65 a to 65 c extending in the vertical direction and arranged in parallel to the left and right to support the upper part of the seedling platform 51 so as to be movable left and right via the left and right movement guide unit 111. A pair of first horizontal frames 67a, 67b fixed between the central frame 65b and the left frame 65a of the upper and lower frames 65a-65c and fixed to the two upper and lower frames 65a, 65b so as not to be removed; A pair of second horizontal frames 68a and 68b removably connecting the remaining one right frame 65c and the central frame 65b;
A seedling transplanter, wherein a line marker driving device 82 for driving the field line quotation line marker 53 is disposed between the pair of first horizontal frames 67a, 67b.

Images