JPH07114581B2 - Soil cover mechanism of transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention mainly relates to transplantation in which a soiled seedling such as lettuce, Chinese cabbage and cabbage is planted in a ridge while making holes in the ridge coated with a multi-membrane body. Regarding the soil cover mechanism of the machine.

(Prior Art) In the conventional art of this type, as shown in FIG. 19, a pair of left and right lateral covering earth wheels 152 is rotatably provided at the rear of the transplanting cylinder 97, and the axis of the lateral covering earth wheels 152 is fixed. The opposing soil is inclined upward so that the soil to be pushed is pushed toward the planting hole Y side where the seedling R is inserted.

This conventional technique has a good function of covering the left and right soils and is effective, but it cannot cover the planting holes Y from the front and back thereof, resulting in poor survival and dying, which hinders the growth of seedlings.

As a technique that can be used in combination with the first conventional technique, Japanese Patent Laid-Open No. 59-
There is one disclosed in Japanese Patent No. 179006 (illustrated in FIG. 20). In the second conventional technique, the transplanting cylinder 97 is lowered to pierce the ridge N, the lid member 100 is rotated rearward to form the planting hole Y, and the seedling R is inserted into the hole to insert the seedling R into the lid member 100. The earth-covering ring 152 is pushed from the rear toward the planting hole Y side in conjunction with the opening operation of.

(Problems to be Solved by the Invention) However, in the second conventional technique, the planting hole Y cannot be covered with soil from the front, and the soil from the rear is also covered when the transplant cylinder 97 is in the soil. Moreover, when the lid member 100 moves backward, it is difficult to expect good soil coverage.

(Means for Solving Problems) In the present invention, front and rear soil-covering rings are arranged immediately after the current planted seedlings and immediately before the already-planted seedlings, respectively, and a support rod for supporting each soil-covered ring is used as a transplant cylinder or The problem of the prior art can be solved by pivotally supporting the link mechanism constituent member and lowering the rear part downward.

That is, the specific configuration of the problem solving means in the present invention, while supporting the transplantation cylinder to the traveling vehicle body via the link mechanism,
A left and right side 1 provided with a drive mechanism for vertically moving the transplantation cylinder via the link mechanism, and rolling the upper surface of the ridge at the rear side of the transplanter.
In a soil cover mechanism of a transplanter in which a pair of horizontal soil cover wheels are provided on the traveling vehicle body, a front soil cover ring is provided immediately after the current transplanted seedlings transplanted by the transplantation cylinder, and a rear soil cover ring is provided immediately after the existing transplanted seedlings behind the current transplanted seedlings. Respectively,
The front and rear soil-covering wheels are respectively arranged at the rear portions of the support rods in a rearward descending shape, and the support rods are rotated around the horizontal axis in the vicinity of the transplantation cylinder of the transplantation cylinder or the link mechanism component connected to the transplantation cylinder that moves up and down. In addition to being pivotally supported freely, a biasing means for lowering the rear portion of the corner support rod is provided.

(Operation) The rotation of the drive arm 106 causes the implanting cylinder 98 to descend through the parallel link 96, pierce the ridge N at the position of the hole 116, and the lid member 100 is opened by the bending link 110, thereby planting. A hole Y is formed, and at the same time, the stored seedling R is dropped and planted.

The supporting rods 153F and 153R whose front ends are pivotally supported by the transplanting cylinder 98 are also lowered in conjunction with the lowering movement of the transplanting cylinder 98, and the front covering earth ring 152F at the rear portion of the supporting rod 153F is provided with the ridge N immediately after the transplanting cylinder 98. Press on,
The rear cover soil ring 152R at the rear portion of the support rod 153R is pressed against the ridge N immediately behind the transplanted seedling R behind the transplanting cylinder 98.

The rear portion of each of the supporting rods 153F and 153R is hung down downward by a spring 156, and the rear portion of the supporting rod 153F and 153R moves relatively upward and rearward in the descending stroke of the transplantation cylinder 98, and the rear earth-covering ring 152R that is in contact with the ground is the planted plant The soil is pushed from the front to the attached seedling R, and the rear part of the rear part moves forward and downward relative to the rising direction of the transplanting cylinder 98, and the grounding cover ring is in contact with the ground.
152F pushes the soil from the rear to the current transplanted seedling R immediately after the transplanting cylinder 98 has been planted.

The soil covering is completed in the middle of the ascending stroke of the transplanting cylinder 98, and then the front and rear soil covering wheels 152F and 152R are moved up together with the transplanting cylinder 98 and pass above the current transplanting cylinder R.

(Example) Hereinafter, the Example of this invention is described based on drawing.

1 to 18, the transplanter A is roughly classified into a traveling body B.
And a traveling vehicle body D having a planted machine body C, left and right drive wheels E provided on the traveling machine body B, a horizontal control mechanism F for adjusting the heights of the left and right wheels to keep the vehicle body D horizontal, and a traveling machine body B.
The seedling mounting table G provided above, the planting device H and the perforating mechanism J mounted on the planting machine C, the front and rear guide mechanisms K and L and the soil cover mechanism W provided on the planting machine C, and the wheels A drive mechanism M for driving E and actuating the planting device H and the boring mechanism J are provided.

In FIGS. 1 and 2, a traveling machine body B that forms a main frame of a vehicle body D forms a main body 1 by assembling rectangular tubular members into a rectangular shape in plan view,
A handle support column 2 is welded to the rear portion of the handle support 2, a handle 3 is fixed to the handle support column 2, and a base frame 4 for mounting the rear seedling placing table G1 is provided between the handle support column 2 and the main body 1. G2 is a front seedling mounting table provided at the front of the main body 1. A battery 5 is mounted on the rear portion of the main body 1, an operation panel 6 is attached to the handle 3, and a clutch lever and the like (not shown) are provided.

A pair of left and right brackets 7 are fixed to the front and rear midway portions of the main body 1, and a rotating shaft 8 is supported by each of the brackets 7.
A wheel arm 9 is extended rearward and downward from the rotary shaft 8 so as to be vertically swingable, and a drive wheel E is attached to an axle of a lower end of the wheel 9.
Supported through 10.

The horizontal control mechanism F changes the relative heights of the left and right wheels E to maintain the level of the vehicle body D on a sloping ground, and its drive source is a motor 12 near the battery 5. The motor 12 is fixed to a bracket 13 provided upright on the main body 1, and a drive arm 14 is attached to its output shaft. Reference numeral 15 is a transmission shaft penetrating the main body 1 to the left and right, and arms 16a and 16b, which are displaced from each other by about 180 °, are fixed to both ends. A swing arm 17 is integrally provided on the left arm 16a, and the swing arm 17 and the drive arm 14 are connected by a link 18. The tips of the pair of left and right arms 16a, 16b are connected to the left and right wheel arms 9 via links 19, respectively.

The horizontal control mechanism F is provided with a horizontal sensor 20 and a pair of limit switches 21 on a motor bracket 13,
The motor 12 is driven by the inclination detection of the horizontal sensor 20, and via the arms 14, 17, 16 and the links 18, 19 and the transmission shaft 15, etc.,
Swing the left and right wheel arms 9 up and down in opposite directions,
The relative heights of the left and right wheels E are adjusted so that the vehicle body D is absolutely horizontal. The height difference between the left and right wheels E is determined by a pair of limit switches 21 operated by an operating piece 22 fixed to the drive arm 14.
Adjusted by changing the position of.

In FIGS. 1, 2 and 10, a traveling drive shaft 30 is supported at the front end of the main body 1 of the traveling machine body B, and a traveling transmission system of the drive mechanism M is formed from the traveling drive shaft 30 to the axle 10. There is. 31 is a motor fixed to the planting machine C, which drives the horizontal center shaft 33 via the first chain transmission means 32.
33 is penetrated by a horizontal cylindrical shaft 34 welded to the main body 1, and a sprocket 35 is provided on the outer end side. This sprocket 35
(A plurality of sheets), a sprocket 36 on the traveling drive shaft 30 (a plurality of sheets), and an idler sprocket 37 between the multi-stage transmission means 38.
Is configured.

Between the traveling drive shaft 30 and the rotary shaft 8, a pair of left and right second
Chain transmission means 40 is provided, and a pair of left and right third chain transmission means 41 is provided between the rotary shaft 8 and the axle 10.
Clutch means (not shown) for connecting and disconnecting the power between the second and third chain transmission means 40, 41 is provided on the rotary shaft 8.
It can be operated with the clutch lever of the handle 3.
The pair of clutch means is provided for the left and right wheels,
Steering is possible by turning off one side.

While the traveling machine body B is an outer frame, the planting machine body C is an inner frame. The planting machine body C has one front end loosely fitted to the horizontal cylinder shaft 34 and the other side of the same as the horizontal cylinder shaft 34. It is pivotally connected to the traveling machine body B through a horizontal cylindrical shaft 34 in which the core can be freely inserted and removed. The horizontal cylindrical shaft 34 connects the traveling machine body B and the planting machine body C to each other so that the traveling machine body B and the planting machine body C can be vertically swung relative to each other.

As shown in FIGS. 1 and 7, a planting device H, a boring mechanism J, forward and backward guide mechanisms K and L, a soil covering mechanism W, and the like are attached to the planting machine body C.

The planting machine C has an inner frame body 43 formed by assembling square tubular materials into a substantially rectangular shape in plan view.
Is formed, and the bracket 4 is projected downward from the inner frame 43.
4,45,46,47 are fixed. First and second brackets 44,4
An upper end of a front fork 48 (supporting leg) and a front arm 49, which constitute the front guide mechanism K, is pivotally supported at 5, and the lower ends of both are pivotally connected by a side roller bracket 50 to form a parallel link mechanism. There is.

The front fork 48 rotatably supports a cylindrical or drum-shaped pressing roller 51 that rolls on the upper surface of the ridge N coated with the multi-film body Q, and the side roller bracket 50 rolls the shoulder portion of the ridge N. A pair of left and right side rollers 52 are supported.

As shown in FIGS. 7 to 9, each of the left and right side rollers 52 has an inclined shaft 55 attached to an arm 54 pivotally supported by a bracket 50 via a vertical axis 53.
Is supported through. Reference numeral 56 denotes a swinging link that is pivotally supported at the center of the bracket 50 via a pin 57, and both ends thereof and the upper ends of the left and right inclined shafts 55 are connected via an L-shaped link 58. The swing link 56 is pulled in the direction of the arrow in FIG. 9 by a spring 59 (spring body) provided between the swing link 56 and the bracket 50.
52 and 52 are elastically pressed inward toward each other and pressed against the ridge shoulder.
The swing link 56 and both links 58 form a link mechanism that connects both arms 54 to each other, and by this link mechanism, both arms 54 are symmetrically swung, and both side rollers 52.
The center of is kept constant.

The transplanter A has no front wheels, and the side rollers 52,52
Since the ridge is suppressed by the ridge shoulder, the steering operation during traveling follows the ridge N.

On the other hand, the fourth bracket 47 is provided with a rear guide mechanism L. A rear side roller bracket 64 (supporting leg) is pivotally supported by a pivot 65 at an upper and lower middle portion of the fourth bracket 47, and a pair of rear side rollers is provided at a rear end of the bracket 64.
66 is attached so that the position in the ridge width direction can be adjusted.

An arm 67 is fixed to the upper end of the rear side roller bracket 64, and the tip of this arm 67 and the front fork 48.
A rod 68 whose length can be adjusted is connected between and. In addition, the pin 69 in the middle of the upper and lower parts of the rear side roller bracket 64
A screw shaft 70 is rotatably engaged with the screw shaft 70.
The tip of is screwed to the pin 71 of the fourth bracket 47.

The rear end of the screw shaft 70 is a handle 70a that can be rotated from the rear side of the vehicle body D. By rotating the screw shaft 70, the front fork 48 and the rear side roller bracket 64 with respect to the inner frame 43 are rotated. Can be changed at the same time, and thereby, the included angle between both 48 and 64 can be changed, the distance between the rollers 51 and 66 can be changed, and the height of the planting machine C can be adjusted. That is, the transplant depth adjusting means 72 is constituted by the rod 68, the screw shaft 70, etc., the screw shaft 70 restricts the swing of the rear side roller bracket 64, and the rod 68 restricts the swing of the front fork 48. There is.

A support frame 74 is fixed to one upper part of the inner frame body 43, and a table shaft 75 is fixed to a rear upper part of the support frame 74. The table shaft 75 has a seedling supply mechanism P of a planting device H.
The turntable 76 that constitutes the above is rotatably supported around the vertical axis.

In FIGS. 7, 11 and 12, a ratchet 77 is fixed to the lower surface of the turntable 76, and a locking pawl 78 for stopping the ratchet 77 in one direction is pivotally supported by a bracket 79 protruding from the table shaft 75. There is. Reference numeral 80 denotes an arm loosely fitted to the table shaft 75, and a feed pawl 81 capable of engaging the ratchet 77 at the tip thereof.
The arm 80 is pivotally supported, and an interlocking rod 82 is connected to the arm 80. The interlocking rod 82 is rocked by a parallel link 94 described later to rotate the ratchet 77 by one claw to turn the turntable.
Rotate 76 intermittently.

The turntable 76 is a square tube-shaped seedling tube into which the soil seedling R is placed.
A plurality of (eg, 12) 83 are arranged at equal intervals in the circumferential direction, and the bottom of each seedling tube 83 can be opened and closed by a single-opening lid 84. This lid 84 is fixed to the table shaft 75 side. C-shaped guide rod 85
The seedling R which is closed in the state of being placed on top and opened when reaching the notch 85a of the guide rod 85 and stored in the seedling barrel 83 is dropped and supplied to the transplanting barrel 97 described later.

87 and a seedling cutting detection means, a limit switch 89 is fixed to a support base 88 protruding from the table shaft 75, and a detection rod
90 is swingably supported around the vertical axis, and an operating piece 91 fixed to the detection rod 90 operates the limit switch 89. The seedlings
The notch 83a into which the detection rod 90 can be inserted is formed in 83. If there is no seedling R in the seedling tube 83, the detection rod 90 swings so as to enter the seedling R, and the swing causes a limit switch. Activate 89 to detect seedling shortage.

In FIGS. 1, 7, and 18, first parallel links 94a, 94b are swingably supported around horizontal pins on the front upper portion of the support frame 74 on the inner frame 43, and both parallel links 94a, 94b are supported. The second parallel links 96a and 96b are pivotally connected to the connecting body 95 that connects the lower ends of the second through horizontal pins, and the transplant cylinder 97 is attached to the lower rear portion of the second parallel links 96a and 96b. .

The transplantation tube 97 is for receiving the seedling R supplied from the seedling tube 83 and then transplanting it to the ridge N. As shown in FIGS. 4, 13, and 14, the tube body 98 has a U-shaped cross section with its front opening. The upper end is connected to the second parallel link 96 via the pin 99, and the lid member 100 closing the front open side is pivotally supported via the pivot 101 on the cylinder body 98. Has been done. Tube body 98
Is a narrowed shape when viewed from the side, and the lower part of the lid member 100 is the cylinder body 9
Closes the bottom of the cylinder body 98 close to the lower back of 8,
By rotating the lid member 100 around the pivot 101, the planting hole Y is formed and the bottom of the cylindrical body 98 is opened and closed to drop the seedling R.

Reference numeral 103 denotes a drive shaft pivotally supported by the inner frame body 43, and a chain transmission means 104 and a clutch means 105 are provided between the drive shaft 103 and the lateral center shaft 33, and these form a planting drive system of the drive mechanism M. . A drive arm 106 is fixed to the drive shaft 103, and the shaft 107 at the tip of the drive arm 106 is a bearing portion 108 of the second parallel link 96a.
Is inserted through and engaged with the bearing.

As shown in FIG. 15, the rotation of the drive shaft 103 and the drive arm 106 causes the first parallel link 94 to swing so as to define a locus α at its tip, and the second parallel link 96 to swing. The locus β is drawn on the transplantation cylinder 97 at the tip. While the drive arm 106 performs a rotational movement, the transplanting cylinder 97 moves in a vertically long and substantially elliptical shape. Therefore, when the transplanting cylinder 97 is pierced into the ridge N at a lower position and from the seedling tube 83 at an upper position. It moves at a low speed when the seedling R is supplied, and the vertical movement during that time moves at a high speed.

Reference numeral 110 denotes a bending link provided between the third bracket 46 of the inner frame body 43 and the lid member 100, and becomes linear when the transplantation tube 97 reaches the lowermost position, and the transplantation tube 97 is further moved from that position. When moving upward to the rear, the lid member 100 cannot move together, and is pulled by the linear bending link 110 and swings around the pivot 101 to open the lower side of the transplantation cylinder 97 while pushing away the soil of the ridge N. . This displacement of the soil forms a rectangular planting hole Y into which the seedling R falls. When the transplantation cylinder 97 moves to the upper position, the distance between the transplantation cylinder 97 and the third bracket 46 becomes shorter, and the bending link 110 is biased by the spring 111 in a linear direction, so that the lid member 100 is transplanted. Close the bottom of tube 97.

An interlocking rod 82 for driving the seedling supply mechanism P is connected to the upper end of the first parallel link 94, and the second parallel link 96 is moved upward by a spring 113 provided between the support frame 74 and a fixed bracket 112. Has been pulled to.

The first parallel link 94, the connecting body 95, the second parallel link 96, the bending link 110, the drive arm 106, and the like constitute a drive mechanism that drives the transplant cylinder 97.

The perforation mechanism J will be described with reference to FIGS. 1, 4, 16 and 18.
The piercing mechanism J forms a hole 116 (shown in FIG. 8) with a gas burner 115 in the multi-membrane Q at a position corresponding to the planting prior to the planting R planting, and together with the transplanting cylinder 97, the front and rear guide mechanisms K and L. Located in between.

The gas burner 115 is mounted on the mounting base 118 via a mounting pipe 117 that also serves as a gas supply pipe. Holder 119 for mounting base 118
Is swingably supported via a horizontal shaft 120, and a mounting tube 117 is inserted into this holder 119 and is mounted so that its vertical position can be adjusted.
129 is fitted, and its upper end is connected to the gas tank 121 via a hose 122. The gas tank 121 is mounted on the traveling body B.

The mount 118 is a bracket 123 fixed to the front of the support frame 74.
Are connected to each other via a third parallel link 124, are elastically pressed upward by a spring 125, and an upper limit position is set by a stopper 126.

A contact piece 127 is projected rearward and downward from the mounting base 118, and a rotating roller 128 contacts the contact piece 127 to move the mounting base 118 and the gas burner 115 up and down.

An arm 130 is fixed to a shaft 107 at the tip of the drive arm 106, and a timing disc 1 is provided in the middle of the arm 130.
A shaft 132 implanted in 31 penetrates through. On the timing disc 131, the rollers 128 are projected and a large number of holes 133 are arranged in a circle, and a pin 134 provided at the tip of the arm is selectively engaged with the holes 133, so that the timing disc 131 The pin 134 is disengaged from the hole 133 by axially pulling it against the spring, and the hole 133 to be engaged with the pin 134 can be selected by rotating the timing disc 131. The position of the roller 128 with respect to is changed, and the timing of the movement of the gas burner 115 and the movement of the graft tube 97 can be changed.

For example, the timing is 128
Pushes down the gas burner 115 via the contact piece 127,
Gas burner 115 when 97 are receiving seedlings at the top
Then, a hole 116 is opened in the multi-membrane body Q, and the transplant cylinder 97 is set to descend into the hole 116 opened after the transplanter A has traveled a predetermined distance.

The lifting drive source of the gas burner 115 is the motor 3 as well as the transplantation cylinder 97.
1 is transmitted from the motor 31 to the drive arm 106, and the drive arm 106 transfers the arm 130, the timing disc 131, and the pin 134.
It is transmitted to the gas burner 115 via the timing adjusting means 138 formed by the above. The timing adjusting means 138, the rollers 128 and the like constitute a pushing means 139 for lowering the gas burner 115.

An operating piece 135 is provided at the tip of the drive arm 106, and a limit switch 136 operated by the operating piece 135 is attached to the support frame 74. The limit switch 136 is turned off by the actuating piece 135 when both the transplant cylinder 97 and the gas burner 115 are in the upper position.

As shown in FIG. 16, the gas burner 115 is provided with a metal bowl 141 at the ejection port 140. This bowl 141 is a plate 142
And a molding portion 143, the dish portion 142 is formed with a hole 144 having a diameter smaller than that of the ejection port 140 and being substantially concentric, so that only the core portion of the flame ejected from the ejection port 140 can pass therethrough. Therefore, the external flame hits the pan 142 and heats the pan 142 and the molding part 143.

The lower edge of the molding portion 142 is formed in a circular shape or a rectangular shape, and is constantly heated by an external flame. Therefore, only by pressing the multi-film body Q, the circular or square hole 116 is opened.
Note that the gas burner 115 is constantly ignited, and burns out the multi-film body piece, such as a circle, which burns off the molding portion 143, by the flame passing through the hole 144 of the dish portion 142.

The bowl 141 is detachably attached to the flange 145 of the ejection port 140 by a bolt nut or the like, and the molding part 143 can be replaced with a different one.

FIG. 21 shows an electric circuit of the limit switch 136, the limit switch 89 for detecting seedling breakage, and the main switch 137 for starting the motor 31. The limit switch 89 and the main switch 137 are connected in series, and the limit switch 136
Are connected in parallel to them.

That is, even if the seedling R is cut off and the limit switch 89 is activated, or the main switch 137 is turned off to stop the traveling or planting work, the motor is still operated until the operating piece 135 turns off the limit switch 136. 31 activated, implant 97
And the gas burner 115 is moved to the upper position. This prevents the motor 31 from stopping when the graft cylinder 97 and the gas burner 115 are in the lower position, and the graft cylinder 97 remains stuck in the ridge N, or the gas burner 115 burns the multi-membrane Q in a wide range. It is possible to prevent such an accident.

The soil cover mechanism W will be described with reference to FIGS. The soil covering mechanism W has a pair of left and right horizontal soil covering wheels 152L, 152P and a pair of front and rear soil covering wheels 152F, 152R.

The left and right lateral earth covering wheels 152L, 152P are formed by bending the rear portion of the supporting rod 153L in the same manner as in the conventional technique shown in FIG. The left and right support rods 153L, 153P are arranged in a front upper tilted posture, and the front portion of the left and right support rods 153L, 153P is attached to the L-shaped bracket 154 protruding from the lower portion of the bracket 47 to the horizontal shaft 155. Through
It is rotatably supported. Reference numeral 156 is a spring that hangs down the rear portion of the support rod 153L, and 157 is the support rod 153L.
It is a stopper that prevents downward rotation of L above a certain level.

The front and rear earth-covering wheels 152F and 152R are respectively supporting rods 153 having a rearward descending shape.
The rear ends of the F and 153R are rotatably supported about the horizontal axis, and the front portions of the support rods 153F and 153R are pivotally supported by the side wall front portion 98a of the tube body 98 of the transplantation tube 97 via the horizontal axis 155. There is. A coil spring (biasing means) 156 is fitted on each of the horizontal shafts 155, and acts so as to project the rear portion of the support rod 153 downward.

The side wall front portion 98a is provided with a stopper 157 which prevents the support rods 153F, 153R from rotating downward more than a predetermined amount.

The front covering soil ring 152F is located right behind the transplantation tube 97,
From the midway of the descending stroke of the vehicle, it touches the ridge N and moves backward until it reaches the lowest position, but when the transplanting cylinder 97 rises, it moves forward while receiving the acting force of the spring 156, and the traveling vehicle body D also travels. Therefore, the current transplanted seedling R planted by the transplant cylinder 97
On the other hand, the soil is pushed from behind to cover the soil in the hole Y for planting.

Further, the rear soil cover ring 152R is located about one or two times before the current transplanted seedling R, immediately before the transplanted seedling R, and comes into contact with the ridge N from the middle of the descending process of the transplantation cylinder 97 to the lowest position. Until it reaches, it moves backward while receiving the acting force of the spring 156,
The front pair of the transplanted seedlings R is pushed backward to cover the soil.

When the transplantation cylinder 97 rises and reaches a certain height or more, each support rod 16
The 3F and 153R come into contact with the stopper 157 and are prevented from rotating downward, so the front and rear covering wheels 152F and 152R rise together with the transplant cylinder 97,
As shown by the phantom line in FIG. 3, the height exceeds the transplanted seedling R.

The support rods 153F, 153R of the front and rear earth covering wheels 152F, 152R have the horizontal shaft 155 arranged concentrically or supported by the parallel link 96, and the spring and stopper have the same structure as that of the horizontal earth covering wheel 152L. Alternatively, the horizontal axis of one of the supporting rods may be supported in the middle of the other supporting rod.

The planar arrangement of the respective components of the transplanter A is shown in FIG. 2, in which the planting machine B is arranged inside the front of the traveling machine B, and the centers in the width direction thereof are substantially the same. With respect to the center number S, the handle 3 is deviated to the right with respect to the traveling direction and does not project to the left side of the traveling body B, and the transplant cylinder 97 and the gas burner 115 are located on the substantially center line S, and therefore the transplant is performed. The turntable 76 that supplies the seedlings R to the tubes 97 has a center eccentric to the left side, and each seedling tube 83 is arranged so as to move directly above the transplantation tube 97.

Seedling stands G1 and G2 are provided in front of and behind the turntable 76, and a seedling box T containing a large number of soil-bearing seedlings R is placed on them, but they are placed in the left-right reverse direction from the vehicle body D. It is projected. This is because the worker U walks on the side of the turntable 76 to manually supply the seedling R from the seedling mounting table G2 to the seedling tube 83, and the seedling mounting table G2 on which the used seedling R is mounted is the turntable 76. At the front position of the seedling R, the seedling mounting table G1 on which the spare seedling R is mounted is projected to the right side to secure a worker placement space on the left side, so that the seedling R can be easily taken out. ing. The worker U walks in the groove next to the furrow groove in which the drive wheel E rolls, and the wheel rolling groove does not walk and is not disturbed by the handle 3. The gas tank 121 is arranged at the front right part.

By arranging the handle 3, the seedling placing table G1 and the gas tank 121 on the right side of the center line S and the turntable 76 and the seedling placing table G2 on the left side in this way, the left and right balance of the transplanter A is good. Therefore, the workability of supplying seedlings is improved.

In FIGS. 1 and 4, reference numeral 146 denotes a guide rod projecting upward from the gas burner 115, which is inserted into a guide groove 147 provided in the inner frame 43, and which allows lateral movement of the gas burner 115 while allowing vertical movement and longitudinal movement. Is being prevented.

The present invention is not limited to the above embodiment, but can be variously modified.

(Effects of the Invention) According to the present invention described in detail above, the front and rear soil-covering wheels are supported by the rear portions of the rearward-rear supporting rods, respectively, and are grounded on the ridges as the transplantation cylinder descends. Since the rear part is struck down by and the front and back earthen rings are pressed down on the ridges, the front earthen ring immediately after that can cover the existing transplanted seedlings from the rear when the transplantation cylinder rises, and The rear soil cover behind the soil cover can cover the soil from the front of the transplanted seedlings when the transplantation cylinder descends, and the seedlings can be surely covered from the four sides together with the left and right horizontal soil cover rings, improving the growth of seedlings. It will be possible. Further, since the support rod of the earth-covering ring is supported in the vicinity of the transplant cylinder of the transplant cylinder or the component of the link mechanism connected to the transplant cylinder, it can follow it even if the transplant cylinder moves back and forth. On the other hand, the front and rear soil-covering wheels can always be properly arranged.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is an overall side view, Fig. 2 is an overall plan view, Fig. 3 is an enlarged side view of essential parts, and Fig. 4 is a plan view of a planting machine. 5 and 6 are cross-sectional views and plan views showing the soil cover action, FIG. 7 is a side view of the planting device, FIGS. 8 and 9 are perspective views and plan views of the front guide mechanism, and FIG. 10 is a drive mechanism. FIG. 11 is a plan view showing the main part of the seedling supply mechanism, FIG. 12 is a side view of the seedling tube, FIG. 13 is a front view of the transplanting tube, and FIG. 14 is FIG. XIV-XIV line cross-sectional view, FIG. 15 is an operation explanatory view of the implant cylinder and the gas burner, FIG. 16 is a cross-sectional view of the gas burner, FIG. 17 is an electric circuit diagram of the limit switch,
FIG. 18 is a perspective view of the drive part of the implant cylinder and the gas burner,
19 and 20 are a cross-sectional front view and a cross-sectional plan view showing the two prior arts, respectively. A: transplanting machine, B: traveling machine, C: planting machine, D ...
… Car body, E… Drive wheels, F… Horizontal control mechanism, G…
Seedling table, H ... Planting device, J ... Drilling mechanism, K ... Front guide mechanism, L ... Rear guide mechanism, M ... Drive mechanism, N ...
Ridge, P ... Seedling supply mechanism, Q ... Multi-membrane, R ... Soil seedling, W ... Soil cover mechanism, 94, 96 ... Parallel link, 97 ... Transplant seedling, 152 ... Soil cover, 153 …… Supporting rod, 156 …… Spring.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Rokuro Kashima, 64, Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Iron Works Co., Ltd.Sakai Plant (72) Inventor Toyonori Sato 684 Nakamata, Okayama City, Okayama Prefecture Kobashi Industry Co., Ltd.

Claims (1)

[Claims] 1. A driving mechanism for supporting a transplantation cylinder on a traveling vehicle body via a link mechanism and for moving the transplantation cylinder up and down via the link mechanism, and rolling the upper surface of the ridge at the rear side of the transplanter. In a soil covering mechanism of a transplanter in which a pair of left and right horizontal earthen rings are provided on the traveling vehicle body, a front earthenable ring is placed immediately after the current transplanted seedlings planted by the transplantation cylinder and immediately before the existing seedlings behind the current transplanted seedlings. Arrange each back cover earth ring,
The front and rear soil-covering wheels are respectively arranged at the rear portions of the support rods in the rearward descending shape, and the support rods are rotated around the horizontal axis in the vicinity of the transplantation cylinder of the transplantation cylinder or the link mechanism component connected to the transplantation cylinder that moves up and down. A soil cover mechanism for a transplanter, which is provided with a biasing means for freely pivoting and for lowering a rear portion of a corner support rod downward.