JPH0627049Y2 - Scraper device for transplantation cylinder in transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of use) The present invention relates to a transplanter scraper device in a transplanter.

(Prior Art) A transplanter for transplanting soil blocks, paper pot seedlings, etc. is equipped with a vertically movable transplantation cylinder, receives the seedling at the elevated position of this transplantation cylinder, and perforates a planting hole on the ridge surface of the field when descending. At the same time, there is an opening / closing plate that is used to plant seedlings in a transplant cylinder.

In this type of transplanter, the tip of the graft tube is pierced into the ridge, so soil adheres to the inner and outer surfaces of the tip of the graft tube, but conventionally there is no scraper to scrape off the dirt attached to the outer surface of the graft tube. However, there was no scraper for scraping off the soil adhering to the inner surface of the transplant cylinder.

(Problems to be solved by the invention) If soil adheres to the inner surface of the transplantation tube, seedlings will be clogged in the transplantation tube, and the posture of the seedling will be inclined so that the seedlings cannot be vertically planted in the planting hole. I had a fall. Further, if soil adheres to the inner surface of the planting cylinder, the opening / closing plate will remain open, and the planting depth will become shallow.

On the other hand, in the scraper device described in the above publication, a scraper is provided on the outer side of the transplantation cylinder so as to be inclined with respect to the transplantation cylinder,
The tip of the scraper scrapes off the soil on the outer surface of the graft tube. Therefore, if such a scraper is stored in the transplantation cylinder as it is, the inner cross-section of the transplantation cylinder is affected, and it is virtually impossible to provide the scraper inside the transplantation cylinder.

Further, in the conventional scraper device, since the scraper is moved up and down by the complicated link mechanism, the manufacturing cost is increased exclusively.

In view of such circumstances, the present invention provides a transplanter scraper device capable of reliably scraping off soil adhered to the inner surface of the transplantation cylinder by a simple mechanism without invading the inner space of the transplantation cylinder. With the goal.

(Means for Solving the Problems) In order to achieve the above object, the present invention has taken the following technical means.

That is, the invention according to claim 1 is provided with a transplantation cylinder 97 which is vertically movable and which, when descending, perforates a planting hole Y in the field to plant the seedling R loaded therein, one side of which is open. A tube body 98 and an opening / closing plate 100 that closes the open side thereof. The opening / closing plate 100 is pivotally supported by the tube body 98 such that the lower part of the opening / closing plate 100 can be moved toward and away from the lower part of the tube body 98. In the machine, a scraper 160, which is opened on the same side as the cylinder body 98, is provided inside the transplantation cylinder 98 so as to be vertically movable with respect to the cylinder body 98 so that the entire outer surface thereof is in sliding contact with the inner surface of the cylinder body 98. Is characterized by.

Further, the invention according to claim 2 is provided with a biasing means for biasing the scraper 160 to the raised position, and the projection 166 for lowering the scraper 160 against the biasing means when the transplantation cylinder 98 is raised. Is provided on the scraper 160.

Further, in the device according to claim 3, the tubular body 98 has a U-shaped cross section, and the scraper 160 has a U-shaped cross-section slightly smaller than the tubular body 98, and the scraper 160 is outward as it goes downward. Equipped with displacing tongue pieces (160a) (160b),
The scraper 160 having the tongue pieces 160a and 160b is in pressure contact with the inner surface of the cylinder body 98.

(Operation) The scraper 160 moves up and down with respect to the cylinder body 98 so that the entire outer surface of the scraper 160 is in sliding contact with the inner surface of the cylinder body 98, and when the scraper 160 moves downward, scrapes the soil attached to the inner surface of the cylinder body 98 downward. Drop it.

At this time, the scraper 160 of the present invention is opened on the same side as the cylinder body 98, and the entire outer surface thereof is in sliding contact with the inner surface of the cylinder body 98, so that the inner space of the transplantation cylinder 97 is not invaded (claim 1). .

The lower part of the opening / closing plate 100, which is a component of the transplantation cylinder 97, is rotatably supported with respect to the lower part of the cylinder body 98.
It is not necessary to scrape the opening / closing plate 100 because there is little risk that soil will adhere to the opening / closing plate 100 itself.

Also, when the protrusion 166 provided on the scraper 160 is pushed down,
The scraper 160 moves downward relative to the cylinder body 98, and scrapes down the soil attached to the inner surface of the cylinder body 98 (claim 2).

On the other hand, when the cylinder body 98 and the scraper 160 are formed in a U-shaped cross section, the tongue portion is displaced outward as it goes downward.
160a and 160b are provided on the scraper 160, and the scraper 160
To press the inner surface of the barrel body 98,
The lower ends of the a and 160b are in sliding contact with the inner surface of the cylinder body 98 more strongly than the upper ends thereof, and the scraper function is further improved (claim 3).

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 to 18, the transplanter A is roughly classified into a traveling vehicle body D having a traveling machine body B and a planting machine body C, a pair of left and right drive wheels E provided on the traveling machine body B, and the left and right wheels E.
A horizontal control mechanism F for adjusting the height of the vehicle body to maintain the horizontalness of the vehicle body D, a seedling stand G provided on the traveling machine body B, a planting device H mounted on the planting machine body C, and a perforation mechanism J. And the front and rear guide mechanisms K and L and the soil cover mechanism W provided on the planting machine C,
The drive mechanism M etc. which drive the wheel E and operate the planting apparatus H and the drilling 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 in the front part 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 from the rotation shaft 8 rearward and downward so as to be vertically slidable, and a drive wheel E is attached to a lower end of the wheel arm 9.
Are supported via an axle 10.

The horizontal control mechanism F changes the relative height of the left and right wheels E,
The vehicle body D is maintained horizontal 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. 15 is the main body 1
Arms 16a, 16b, which are displaced by approximately 180 ° from each other, are fixed to both ends by a transmission shaft that penetrates right and left. 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.,
The left and right wheel arms 9 are vertically swung in opposite directions, and 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 adjusted by changing the positions of the pair of limit switches 21 operated by the operating pieces 22 fixed to the drive arm 14.

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 body B, and a traveling transmission system of the drive mechanism M is formed from the traveling drive shaft 30 to the wheels 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 8 is an outer frame, the planting machine body C is an inner frame, and the planting machine body C has a front end one side loosely fitted to the horizontal cylindrical shaft 34 and the other side being the same as the horizontal cylindrical 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, the planting machine C is provided with a planting device H, a boring mechanism J, front and rear guide mechanisms K and L, a soil covering mechanism W, and the like.

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 pins on the upper and lower half of the rear side rotor bracket 64
A screw shaft 70 is rotatably engaged with the screw shaft 69.
The tip of 70 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.
Indicates that the rear side roller bracket 64 swings, and the rod 68 regulates the front fork 48 swings.

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 is a seedling out 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 transplanting 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. It is U-shaped and has a sawtooth shape at the bottom and a pin on the second parallel link 96 at the top.
An opening / closing plate 100, which is connected via 99 and closes the front open side, is pivotally supported by a shaft 101 so as to be openable and closable. The tube main body 98 has a narrowed shape when viewed from the side, and an opening / closing plate 100
The lower part of the cylinder closes the bottom of the cylinder body 98 close to the lower part of the rear surface of the cylinder body 98, and the opening / closing plate 100 rotates around the pivot 101 to form the planting hole Y and open / close the bottom of the cylinder body 98. Then, the seedling R is dropped.

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 opening / closing plate 100, and becomes linear when the transplantation cylinder 97 reaches the lowermost position, and the transplantation cylinder 97 is further moved from that position. When moving to the upper rear, the opening / closing plate 100 cannot move together, and is pulled by the straight bending link 110 and swings around the pivot 101 to open the lower part 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. If it moves to the upper part of the transplantation cylinder 97, the distance between it and the third bracket 46 becomes shorter, and
Since the bending link 110 is biased by the spring 111 in the direction in which the bending link 110 is linear, the opening / closing plate 100 is moved to the transplantation tube 9.
7 Close the bottom.

As shown in FIGS. 13 and 14, inside the transplantation cylinder 97, a scraper 160 for scraping down the soil attached to the inner surface thereof is provided.
Is provided so that it can move up and down. The scraper 160 is open on the same side as the cylinder body 98, and is vertically movable with respect to the cylinder body 98 so that the entire outer surface thereof is in sliding contact with the inner surface of the cylinder body 98.

The cylinder main body 98 of this embodiment has a U-shaped cross section, and the scraper 160 is formed in a U-shaped cross section that is slightly smaller than the cylinder main body 98.

As shown in FIGS. 19 and 20, the scraper of this embodiment is
160 is a tongue piece 160a which is displaced outward as it goes downward,
The lower part is provided with 160b, and a pin 164 and a spring 165 which will be described later are provided.
Thus, the scraper 160 is pressed against the inner surface of the cylinder body 98.

From the scraper 160, a guide pin 162 that is inserted into the guide groove 161 of the cylinder body 98 is provided so as to project rearward.
A spring 163 is wound around to press the scraper 160 against the rear wall 98a of the cylinder body 98. A spring 16 for pulling up the scraper 160 is provided between the guide pin 163 and the pin 164 fixed to the barrel body 98.
5 are installed. Then, the inner frame body 43 of the planting machine body C is provided with a protrusion 167 for pushing down the scraper 160 via the projecting piece 166 at the upper end thereof when the transplantation barrel 97 is raised. The soil adhered to the inner surfaces of the lower ends of the rear wall 98a and the left and right side walls 98b of the main body 98 is scraped off.

Then, the guide pin 162 and the pin 1 fixed to the barrel body 98
63 and the spring 165 interposed between them, the scraper 160
Urging means for urging the lever to the raised position.

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 the planting corresponding position prior to the seedling R planting, and together with the transplanting cylinder 97, the front and rear guide mechanisms K, L.
It is located 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 143 is formed in a circular shape or a rectangular shape and is constantly heated by an external flame, so that the circular or rectangular hole 116 is opened only by pressing the multi-film body Q.
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 horizontal earth covering wheels 152L, 152P are formed by bending the rear portion of the supporting rod 153L, the shafts are inclined inwardly and upwardly, and the earth covering wheels are rotatably supported in an inclined posture. Rod 153L, 153
P is arranged in a front upper tilted posture, and its front part is an L-shaped bracket 154 protruding from the lower part of the bracket 47 to the front part.
It is rotatably supported by a horizontal shaft 155. Reference numeral 156 is a spring that pierces the rear portion of the support rod 153L downward, and 157 is a stopper that prevents the support rod 153L from rotating downward more than a certain amount.

The front and rear earth-covering wheels 152F and 152R are respectively supporting rods 153 having a rearward descending shape.
The rear part of the F, 153R is supported rotatably around the horizontal axis, and the front part of each supporting rod 153F, 153R has a side wall 98b of the tube body 98 of the transplantation tube 97.
It is pivotally supported by a bracket 98c provided at the front part of the shaft via a horizontal shaft 155. A coil spring (biasing means) 156a is fitted on each of the horizontal shafts 155, and acts so as to lower the rear portions of the support rods 153F and 153R downward.

The bracket 98c is provided with a stopper 157a that prevents the support rods 153F and 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 planting hole Y with soil.

In addition, the rear cover soil ring 152R is located immediately before the transplanted seedling R which is one or two before the current transplanted seedling R, contacts the ridge N from the middle of the descending process of the transplantation cylinder 97, and reaches the lowest position. Until
It moves backward while receiving the acting force of the spring 156a, and pushes the soil on the front side of the transplanted seedling R backward to cover the soil.

When the transplanting cylinder 97 rises to a certain height or more, each support rod 15
Since the 3F and 153R come into contact with the stopper 157a and are prevented from rotating downward, the front and rear covering wheels 152F and 152R ascend together with the transplant cylinder 97, and as shown by the phantom line in FIG. Become.

As shown in FIGS. 3, 13, and 14, the support rods 153F and 153R are
Scrapers 168, 169, 170 for scraping down the soil attached to the outer surface of the cylinder body 98 of the transplantation cylinder 97 are provided. That is, the scraper 168 corresponding to the rear wall 98a of the cylinder main body 98 is pivotally supported by the support rod 158R by the fixed shaft 171 and is swingable.
72 is urged to the rear wall 98a side. Further, the scrapers 169, 170 corresponding to the left and right side walls 98b of the cylinder body 98 are provided with support rods 153F, 153.
It is fixed to R. Therefore, when the transplantation cylinder 97 rises and the support rods 153F, 153R relatively lower, the scraper 1
68, 169 and 170 scrape down the soil attached to the outer surfaces of the rear wall 98a and the left and right side walls 98b of the cylinder body 98.

The left and right scrapers 169, 170 can also be used as the support rods 153F, 153R themselves if the support rods 153F, 153R are provided so as to be in sliding contact with the left and right side walls 98b as shown in FIG.

The support rods 153F, 153R of the front and rear earth covering wheels 152F, 152R have the horizontal shaft 155 arranged concentrically, or support the parallel link 96, and the spring and the 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 each component of the transplanter A is shown in FIG. 2, and the planting machine C is arranged inside the front of the traveling machine B, and their widthwise centers substantially coincide with each other. With respect to the center line S, the handlebar 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 transplantation 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 modified in various ways.

(Effect of the Invention) According to the present invention, the scraper 160 is opened on the same side as the tube main body 98, and moreover, the entire outer surface of the scraper 160 slides in contact with the inner surface of the tube main body 98 and moves up and down, so that the inner space of the transplantation tube 97 is invaded. It is possible to reliably scrape off the soil attached to the inner surface of the transplantation cylinder.

Further, according to the invention of claim 2, the scraper 160
Since the scraper 160 moves downward relative to the cylinder body 98 simply by pushing down the protrusion 166 provided on the scraper, a scraper without a complicated mechanism such as a conventional link mechanism is provided.
The 160 can be reliably moved up and down, and the manufacturing cost of the device can be reduced.

Further, according to the invention of claim 3, the scraper 160
Since the lower ends of the tongue pieces 160a and 160b provided on the slide contact the inner surface of the cylinder body 98 more strongly than the upper portions thereof, the scraping function of the scraper 160 can be further improved.

[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, and Fig. 3 is an enlarged side view of essential parts.
FIG. 4 is a plan view of the planting machine, FIGS. 5 and 6 are cross-sectional views and plan views showing the soil cover action, and FIG. 7 is a side view of the planting device, and FIG.
9 is a perspective view and a plan view of the front guide mechanism, FIG. 10 is a perspective view showing a main part of the drive mechanism, FIG. 11 is a plan view showing a main part of the seedling supply mechanism, and FIG. 12 is a side view of the seedling tube. Fig. 13, Fig. 13 is a cross-sectional view of the transplant cylinder, Fig. 14 is the same plan view, Fig. 15 is an operation explanatory view of the transplant cylinder and the gas burner, Fig. 16 is a cross-sectional view of the gas burner, and Fig. 17 is an electric diagram of the limit switch. Fig. 18 is a circuit diagram, Fig. 18 is a perspective view of a drive part of a transplant cylinder and a gas burner, Fig. 19 is a sectional view of a scraper, Fig. 20 is a rear view of the same, and Fig. 21 is a plan view of an implant cylinder. A: transplanting machine, B: traveling machine, C: planting machine, D ...
… Car body, E… Drive wheels, F… Horizontal control mechanism, G…
Seedling stand, H ... Planting device, J ... Drilling mechanism, K ... Front guide mechanism, L ... Rear guide mechanism, M ... Drive device, N ...
Ridge, P ... Seedling supply mechanism, Q ... Multi-membrane, R ... Seedling seedling, W ... Soil cover mechanism, 94, 96 ... Parallel link, 97 ... Transplantation tube, 98 ... Tube body, 100 ...... Opening / closing plate, 152F, 152R …… Soil cover, 153F, 153R …… Support rod, 160,168,169,170 …… Scraper, 160a, 160b …… Tongue part, 166 …… Projecting piece.

Claims (3)

[Scope of utility model registration request] 1. A planting hole which can be raised and lowered and which is planted in a field when descending.
A transplant cylinder (97) for perforating (Y) and planting a seedling (R) loaded inside is provided, and this transplant cylinder (97) closes the cylinder body (98) whose one side is open and its open side. It has an opening and closing plate (100),
In the transplanter in which the lower part of the opening / closing plate (100) is pivotally supported by the tube main body (98) so that the lower part of the opening and closing plate (100) can be moved toward and away from the lower part of the tube main part (98), The scraper (160) opened on the same side as the main body (98) is provided so as to be vertically movable with respect to the cylinder main body (98) so that the entire outer surface of the scraper is in sliding contact with the inner surface of the cylinder main body (98). Scraper device for transplantation cylinders in transplanters. 2. A projecting piece for lowering the scraper (160) against the biasing means when the transplantation cylinder (98) is raised when a biasing means for biasing the scraper (160) to the raised position is provided. 166) is provided on the scraper (160).
A scraper device for a transplanting cylinder in the transplanting machine according to 1. 3. The cylinder body (98) has a U-shaped cross section, and the scraper (160) has a U-shaped cross section which is slightly smaller than the cylinder body (98), and the scraper (160) is outward as it goes downward. The tongue pieces (160a) (160b) that are displaced to
The scraper (160) having 60a) (160b) is the cylinder body (98).
The scraper device for a transplanting cylinder in a transplanter according to claim 1 or 2, wherein the scraper device is pressed against the inner surface of the.