JP2004267006A - Transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To eliminate trouble causing defective planting such as tilting and falling down of transplanted seedlings. <P>SOLUTION: A slide guide groove is nearly vertically extended and formed from the lower end to the middle part and then extended and formed in a tilted form from the middle part toward the upper front to the top. Thereby, since the slide guide groove is nearly vertically extended from the lower end to the middle part, planting claws become a vertical posture as that of conventional claws near the lowermost point where the planting posture of transplanted seedlings is greatly affected and extended and formed in the tilted form from the middle part toward the upper front to the top, the rear end of an L-shaped support is pulled upward by the movement of the top of the L-shaped support to the front in the topmost point. Thereby, the planting claws mounted on the rear end can be drawn near to a seedling takeout mechanism arranged in the upper part. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an implanter.
[0002]
[Prior art]
Conventionally, as one form of a transplanter, a traveling section, a seedling supply section disposed at the rear of the traveling section, and a seedling transplanting section disposed at a position in front of the seedling supplying section are provided. In addition to providing a seedling removal mechanism and a planting mechanism, the planting mechanism connects the planting rotor case to the planting transmission case, and connects the base end of the crank arm to the planting rotor case. The bent portion of the L-shaped support is connected to the tip of the arm, and a planting claw is attached to the rear end of the L-shaped support, and a guide roller is attached to the upper end of the L-shaped support. The guide roller is slidably fitted into a vertically extending slide guide groove formed on the slide guide body, and the planting claw is vertically elongated in conjunction with the rotation operation of the planting rotor case. Are designed to move up and down in an elliptical orbit. Reference 1).
[0003]
Then, the transplanted seedlings in the seedling tray provided in the seedling supply unit are taken out by the seedling extraction nail provided in the seedling extraction mechanism, and are released downward, and the released transplanted seedlings provided in the seeding mechanism are provided by the planting nails. Receiving and planting on the levee of the field.
[0004]
[Patent Document 1]
JP-A-5-276809
[Problems to be solved by the invention]
However, in the transplanting machine described above, the distance between the position where the seedling removal nail releases the transplanted seedling and the position where the planting nail is waiting to receive the transplanted seedling (separation interval) is still large. When a nail is inherited from a transplanted seedling, the transplanted seedling may not be straight into the planted nail.
[0006]
Therefore, when the transplanted seedlings are planted in the field scene by the planting claws in such a state, the transplanted seedlings are not planted in an upright state, and there is a problem that the transplanted seedlings are tilted and the planting is poor.
[0007]
[Means for Solving the Problems]
Therefore, in the present invention, a seedling removal mechanism and a planting mechanism are provided in the seedling transplanting section, and the planting mechanism is connected with the planting rotor case to the planting transmission case, and the crank arm is attached to the planting rotor case. , The bent portion of the L-shaped support is connected to the distal end of the crank arm, and a planting claw is attached to the rear end of the L-shaped support. A guide roller is attached to the upper end of the body, and the guide roller is slidably fitted into a vertically extending slide guide groove formed in the slide guide body, and is used for the rotation operation of the seeding rotor case. In conjunction with the transplanting machine in which the planting claws move up and down in a vertically long elliptical trajectory, the slide guide groove extends substantially vertically from the lower end to the middle, and is formed from the same middle. Slant forward and upward to the upper end There is provided a transplanter, characterized in that which is formed by extending the.
[0008]
Further, according to the present invention, the distance between the upper end and the lower end of the slide guide groove in the front-rear direction is determined by the angle at which the seedling extraction claw provided in the seedling extraction mechanism is released, and the seedling of the planted nail at the highest position. Another feature is that the receiving angles are set to be substantially the same.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described.
[0010]
That is, the transplanting machine according to the present invention provides, as a basic structure, a seedling extracting mechanism and a planting mechanism in the seedling transplanting section, and the planting mechanism interlocks and connects the planting rotor case to the planting transmission case. The base end of the crank arm is connected to the planted rotor case, the bent portion of the L-shaped support is connected to the distal end of the crank arm, and the planted claw is connected to the rear end of the L-shaped support. On the other hand, a guide roller is attached to the upper end of the L-shaped support, and the guide roller is slidably fitted into a vertically extending slide guide groove formed in the slide guide body. In conjunction with the rotation operation of the planting rotor case, the planting claws move up and down in a vertically long elliptical orbit.
[0011]
As a characteristic structure, the slide guide groove is formed so as to extend substantially vertically from the lower end portion to the middle portion, and is also formed to extend obliquely upward and forward from the middle portion to the upper end portion. .
[0012]
At this time, the distance between the upper end and the lower end of the slide guide groove in the front-rear direction is the angle at the time of releasing the seedlings of the seedling extraction nail provided in the seedling extraction mechanism, and the time of receiving the seedlings at the highest position. The angles are set to be substantially the same.
[0013]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0014]
A shown in FIG. 1 is a transplanter according to the present invention. The transplanter A includes a traveling unit 1, a seedling supply unit 2 disposed behind the traveling unit 1, and a front of the seedling supply unit 2. The seedling transplanting unit 3 disposed at the position is provided, and while the traveling unit 1 is self-propelled in the field G, the potted seedlings n such as deep-rooted onions as transplanted seedlings supplied from the seedling supply unit 2 are transferred to the field. The seedling transplanting part 3 transplants it to the bottom m of the groove M formed in G. K is an imaginary line connecting the lower ends of the front and rear wheels 6,8.
[0015]
The traveling section 1 has a pair of left and right front wheels 6 and 6 attached to a front portion of a body frame 4 via a front wheel support 5 and a pair of rear wheel driving arms 7 and 7 at the rear as left and right rear wheel support arms. The rear wheels 8, 8 are connected to the lifting mechanism 9 in an interlocked manner, and the lifting mechanism 9 also functions as a lifting sensor. By raising and lowering the rear wheels 8, 8 based on the amount of vertical movement along the bottom m, the planting depth of the pot seedling n by the seedling transplanting unit 3 can be kept constant.
[0016]
The engine 10 is mounted on a front portion of the body frame 4, and a transmission case 11 is disposed at a position rearward of the engine 10. The transmission case 11 is interlocked with the engine 10, and the transmission case 11 is attached to the transmission case 11. The rear wheel drive cases 7, 7 and the seedling supply unit 2 and the seedling transplanting unit 3 are linked to each other. Reference numeral 12 denotes a hood, and 13 denotes a spare seedling mounting table.
[0017]
As shown in FIGS. 1 and 2, a pair of left and right handle support frames 15, 15 extend rearward and upward via a support 14 at the rear end of the body frame 4 to support both handles. A handle 16 formed in a U shape in plan view is attached to the rear ends of the frames 15, 15. Reference numeral 17 denotes a main transmission lever, reference numeral 18 denotes a covering wheel sensitivity adjustment lever, reference numeral 19 denotes a planting clutch lever, and reference numeral 20 denotes a lifting lever.
[0018]
An earth pressure setting / applying means 21 is provided between the pair of left and right handle support frames 15, 15, and the earth pressure setting / applying means 21 and the lifting / lowering amount adjusting mechanism 33 provided on the side wall of the transmission case 11, which will be described later. An earth covering ring support 22 extending in the front-rear direction is provided, and a pair of left and right earth covering rings 23 are attached to the earth covering ring support 22.
[0019]
As shown in FIGS. 1 and 2, the seedling supply section 2 is disposed between the middle portions of the pair of left and right handle support frames 15, 15. A horizontal transport mechanism 25 that horizontally transports the vertical transport mechanism 24 is provided.
[0020]
As shown in FIG. 1, the vertical transport mechanism 24 vertically transports the seedling trays T in which the seedling pots P are neatly formed in the vertical direction and the horizontal direction toward the front and downward at intervals of the seedling pots P, which will be described later. The seedling transfer section 3 transfers the pot seedling n in the seedling pot P to the bottom m of the groove M, and the empty seedling tray T is conveyed back and upward.
[0021]
As shown in FIG. 1, the horizontal transport mechanism 25 is disposed below the vertical transport mechanism 24, and the horizontal transport mechanism 25 is provided with a horizontal feed shaft 26 that reciprocates in the left-right direction. The vertical transport mechanism 24 is interlocked and connected to enable the vertical transport mechanism 24 to reciprocate in the left-right direction, and a vertical feed interlock mechanism 27 is provided between the horizontal transport mechanism 25 and the vertical transport mechanism 24, The vertical transport interlocking mechanism 27 causes the vertical transport mechanism 24 to perform a vertical feed operation (an operation of vertically feeding the seedling tray T by one stage of the seedling pot P) at the left and right movement end positions.
[0022]
After the lateral movement of the seedling pot P formed on the seedling tray T by one row in this manner, the seedling pot P is vertically fed by one stage, and the lateral movement is again performed by one horizontal row. The operation of vertically feeding by one stage of P is repeated.
[0023]
As shown in FIGS. 1 and 2, the seedling transplanting unit 3 receives a seedling extraction mechanism 28 that extracts a pot seedling n from the seedling tray T of the seedling supply unit 2 and a pot seedling n that is extracted by the seedling extraction mechanism 28. And a seedling planting mechanism 29 for planting a pot seedling n at the bottom m of the groove M.
[0024]
Then, as shown in FIG. 1, the seedling removal mechanism 28 interlocks and connects a seedling removal rotor case 31 to a drive case 60 described later via a seedling removal transmission mechanism 30, and a pair of right and left seedlings is connected to the seedling removal rotor case 31. The take-out claws 32 are mounted so as to be capable of opening and closing.
[0025]
As shown in FIGS. 1 and 2, the seedling planting mechanism 29 has a floating function, and the pair of left and right soil covering rings 23, 23 which also functions as a lifting sensor at a position behind the seedling planting mechanism 29. And a raising and lowering amount adjusting mechanism 33 that matches and adjusts the amount of lifting and lowering of the covering soil rings 23 and 23 and the amount of raising and lowering of the seedling planting mechanism 29 between the covering soil rings 23 and 23 and the seedling planting mechanism 29. Has been established.
[0026]
That is, the raising / lowering amount adjusting mechanism 33 interlocks and connects the front end of the planting transmission case 35 provided in the seedling planting mechanism 29 to the transmission case 11 provided in the traveling section 1 via the planting input shaft 34. The planting transmission case 35 is vertically swingable with the planting input shaft 34 as a floating fulcrum, and a swinging support (not shown) is arranged corresponding to the right side of the planting transmission case 35. The front end of the swing support is attached to the transmission case 11 coaxially with the planting transmission case 35 via a swinging support shaft (not shown) as a floating fulcrum, and integrally with the planting transmission case 35. It can be swung up and down freely.
[0027]
A pair of left and right swinging arms 37, 37 are coaxially pivotally supported by a pair of left and right swinging arms 37, 37 at a rear lower portion of the transmission case 11 via a pair of left and right supports 36, 36, so that the two vertically swinging arms are moved. The moving arms 37, 37 are vertically swingable about the pivot pins 38, 38.
[0028]
The left and right swing arm 37 has its rear end linked to the planting transmission case 35 via a link 39.
[0029]
In this way, the earth covering rings 23, 23 also functioning as elevation sensors are arranged at the rear position of the seedling planting mechanism 29, and the earth covering rings 23, 23 are provided between the earth covering rings 23, 23 and the seedling planting mechanism 29. Since the lifting / lowering amount adjusting mechanism 33 for aligning and adjusting the lifting / lowering amount of the seedling planting mechanism 29 with the lifting / lowering amount of the seedling plant 29 is provided, the structure can be simplified by the lifting / lowering amount adjusting mechanism 33 to perform accurate alignment adjustment with high accuracy. As a result, the seedling planting mechanism 29 can be moved up and down with high precision even when the covering rings 23 and 23 are slightly moved up and down. As a result, the planting depth of the transplanted seedling by the seedling planting mechanism 29 can be kept constant, and the planting accuracy can be improved.
[0030]
As shown in FIG. 1, the left and right swing arm 37 is interlockingly connected to an elevating hydraulic valve 41 that controls the elevating mechanism 9 via an interlocking mechanism 40, as shown in FIG. 1. A lever body 42 having a substantially C-shaped side view in which a rear end portion is connected to the left and right swing arm 37, and a lower end portion connected to a front end portion of the lever body 42 and extending vertically. A connecting rod 45 and an operating arm 47 having a front end connected to the upper end of the connecting rod 45 and a rear end linked to the elevating hydraulic valve 41 via a valve operating shaft 46. .
[0031]
In this way, when the pair of left and right earth covering wheels 23, 23 moves up and down along the unevenness of the bottom m of the groove M, the lifting and lowering amount adjusting mechanism 33 moves up and down in conjunction therewith, and the left side of the raising and lowering amount adjusting mechanism 33 The vertical swing arm 37 → the lever body 42 → the connecting rod 45 → the operating arm 47 → the bubble operating shaft 46 → the hydraulic valve 41 for elevating / lowering → the elevating mechanism 9 interlocks to raise and lower the rear wheels 8, 8 as appropriate. I have.
[0032]
At this time, since the lever body 42 and the operating arm 47 are directly connected by the connecting rod 45, the structure is simple and the power transmission efficiency can be secured well. Note that a connecting wire may be used instead of the connecting rod 45.
[0033]
In the seedling planting mechanism 29, as shown in FIGS. 1 and 2, the base end of the planting rotor case 48 is interlocked to the rear end of the planting transmission case 35 via the planting spindle 43, The base end of the crank arm 49 is operatively connected to the distal end of the planted rotor case 48 via the connecting pin 44, and the L-shaped support is connected to the distal end of the crank arm 49 via a pivot / connecting pin 50. The bent portion 52 of the L-shaped support 51 is pivotally connected and connected, and a planting claw 53 as an opener is attached to the rear end of the L-shaped support 51, and opened and closed between the bent portion 52 and the planting claw 53. While a cam mechanism 54 is interposed, a guide roller 56 is rotatably attached to the upper end of the L-shaped support 51 via a guide roller pivot pin 55.
[0034]
In addition, a slide guide 57 extending vertically is attached to the front end of the handle support frame 15 on the right side, and a slide guide groove 58 extending vertically is formed on the slide guide 57, and the slide guide groove 58 is formed. The guide roller 56 is slidably fitted therein.
[0035]
Further, as shown in FIG. 3, the slide guide groove 58 is formed so as to extend substantially vertically from the lower end portion 70 to the intermediate portion 71, and is inclined forward and upward from the intermediate portion 71 to the upper end portion 72. The distance w between the upper end portion 72 of the slide guide groove 58 and the intermediate portion 71 in the front-rear direction is determined by the angle β1 of the seedling extraction claw 32 provided in the seedling extraction mechanism 28 when the seedling is released. The angle β2 at the time of receiving the seedlings of the planting nail 53 at the highest position is set to be substantially the same.
[0036]
In this way, in conjunction with the rotation operation of the planting rotor case 48, the planting claw 53 moves up and down in a vertically long elliptical trajectory. The nail-forming pieces 53a, 53a are formed so as to be openable and closable, receive the pot seedling n in a state of being closed by the opening and closing cam mechanism 54, open the bottom m of the groove M, and open by the opening and closing cam mechanism 54. By raising it in the state, the potting n can be left on the bottom m so that planting can be completed.
[0037]
At this time, since the slide guide groove 58 is formed so as to extend substantially vertically from the lower end portion 70 to the intermediate portion 71, the planting claw 53 is formed near the lowest point that greatly affects the planting posture of the pot seedling n. Has a vertical posture as before, and at the highest point, the rear end of the L-shaped support 51 is pulled upward by the amount by which the guide roller 56 at the upper end of the L-shaped support 51 is moved forward, The planting claw 53 attached to the rear end can be brought close to the seedling extracting mechanism 28 arranged above.
[0038]
As a result, the relative angle between the seedling removal claw 32 and the planting claw 53 at the time of inheritance can be made substantially zero degree, and the pot seedling n taken out of the seedling pot P by the seedling removal claw 32 is straightened with the planting claw. When the pot seedling n is planted at the bottom m of the groove M by the planting claw 53, the pot seedling n can be planted in an upright state, and the pot seedling n It is possible to solve the problem of poor planting such as tilting.
[0039]
In the present embodiment, the slide guide groove 58 is formed in the shape of a “C” when viewed from the side, so that the upper end portion 72 of the slide guide groove 58 is located forward of the intermediate portion 71 by the interval w. However, the shape of the slide guide groove 58 is not limited to the “<” shape, and is formed, for example, in an arc shape protruding backward from the middle portion 71 to the upper end portion 72, and the upper end portion 72 is formed in the middle portion 71. Alternatively, it may be located forward by the interval w.
[0040]
Further, as shown in FIG. 1, the drive case 60 is disposed at a rear upper position of the transmission case 11, and is disposed between an input / output shaft 61 of the transmission case 11 and an input shaft 62 of the drive case 60. A speed change transmission belt mechanism 63 is interposed. Reference numeral 65 denotes a lateral feed output shaft, and an input shaft 67 of the lateral transport mechanism 25 is operatively connected to the lateral feed output shaft 65 via a drive shaft 66.
[0041]
A drive belt mechanism 69 is provided between the input / output shaft 61 of the transmission case 11 and the output shaft 68 of the engine 10.
[0042]
In this manner, the power is transmitted from the engine 10 to the transmission case 11, the power is transmitted from the transmission case 11 to the seedling planting mechanism 29 and the drive case 60, and the power is transmitted from the drive case 60 to the seedling removal mechanism 28 and the lateral direction. Power is transmitted to the transport mechanism 25.
[0043]
Further, as shown in FIG. 1, the above-mentioned covering earth pressure setting / applying means 21 is disposed at an intermediate position between the pair of left and right handle support frames 15, 15, and is used for trial planting at the initial stage of planting. In addition, the earth covering pressure and the like can be repeatedly and easily adjusted so that full-scale operations can be promptly started.
[0044]
Here, as shown in FIG. 4, the earth covering pressure setting / applying means 21 supports a bifurcated support bracket 75 between the middle portions of the pair of left and right handle support frames 15, 15. A ring-shaped spring receiver 76 is swingably mounted on a halfway portion via a swing support pin 77, and a vertically extending cylindrical body 78 is slidably inserted into the spring receiver 76. Between the lower end surface of the spring receiver 76 and the earth covering pressure adjusting body 79 attached to the lower part of the cylindrical body 78, an earth covering pressure applying spring 80 is wound around the outer peripheral surface of the cylindrical body 78 and interposed. Reference numeral 78a denotes a downward sliding restriction pin that regulates downward sliding of the cylindrical body 78.
[0045]
Then, the support rod 81 is slidably inserted up and down in the cylinder 78, and the rear end of the covering soil ring support 22 is connected to the lower end of the support rod 81. A covering earth pressure adjusting body 79 is interposed between the lower end and the lower end. The covering earth pressure adjusting body 79 is provided with a slide piece 83 formed in a U-shape in a side view at the lower end of the cylindrical body 78 and is connected to the lower end. The piece 83 is vertically slidable on the lower peripheral surface of the support rod 81.
[0046]
Moreover, the slide piece 83 includes an upper / lower piece 83a, 83b having a support rod through hole (not shown) formed in the center, and a connecting piece 83c for connecting the ends of the upper and lower pieces 83a, 83b. On the other hand, a fixing piece 84 having a support rod through hole (not shown) formed in the center is disposed between the upper and lower pieces 83a and 83b, and one end 84a of the fixing piece 84 is connected to the connecting piece 83c. A pressing spring 85 is wound around the outer peripheral surface of the support rod 81 and interposed between the fixed piece 84 and the lower piece 83b. 86 is a connecting pin.
[0047]
In this manner, the other end 84b of the fixed piece 84 having the one end 84a locked to the connecting piece 83c is pressed downward against the elastic pressing force of the pressing spring 85, so that the fixed piece 84 is in a substantially horizontal state. By doing so, the cylinder 78 can be slid up and down integrally with the slide piece 83 along the support rod 81.
[0048]
When the pressing force on the other end 84b of the fixed piece 84 is released at a desired position, the pressing spring 85 pushes up the fixed piece 84 having the one end 84a locked to the connecting piece 83c, and the fixed piece 84 is inclined. In this state, the fixing piece 84 can be fixed to the outer peripheral surface of the support rod 81.
[0049]
Therefore, the vertical position of the cylindrical body 78 can be adjusted via the fixing piece 84, and the covering earth pressure applying spring 80 interposed between the cylindrical body 78 and the spring receiver 76 is contracted and adjusted. The earth pressure applied by the earth pressure applying spring 80 to the earth covering ring 23 can be adjusted arbitrarily (steplessly).
[0050]
FIG. 5 shows a transplanting machine A as another embodiment. The transplanting machine A has the same basic structure as that of the transplanting machine A described above, but the covering soil ring 23 is covered by a covering soil ring cover body 90. And that a pair of left and right rear guide wheels 91, 91 are provided at a position rearward of the covered soil ring 23.
[0051]
The earth covering ring cover body 90 is formed of an upper cover piece 90a that covers the upper side of the earth covering ring 23, and left and right side cover pieces 90b and 90b that cover the left and right sides of the earth covering ring 23, and has a front end that is left and right. It is pivotally supported on pivot brackets 92, 92 provided between the middle portions of the pair of handle support frames 15, 15 via pivot pins 93, 93 whose axes are directed in the left-right direction, so as to be vertically rotatable. I have.
[0052]
In this way, by covering the top and left and right sides of the covering ring 23 with the covering ring cover body 90, it is possible to prevent the soil from above and from the side from adversely affecting the covering ring 23. In particular, the present invention is effective in a green onion transplanter for planting a pot seedling n in the groove M.
[0053]
The pair of left and right rear guide wheels 91, 91 are attached to the middle of the pair of left and right handle support frames 15, 15 via guide wheel supports 94, 94, respectively.
[0054]
In this manner, the front wheels 6, 6 and the rear guide wheels 91, 91 disposed at the bottom m of the groove M guide the front and rear portions of the body, so that the straightness of the body can be improved, After running in the field G, the wheels 8, 8 do not shift in the left-right direction, so no landslide occurs.
[0055]
Further, since the airframe can be run in a hand-free state, the transplantation work becomes easy for the operator.
[0056]
FIG. 6 shows a structure of an elevating mechanism 9 and a front wheel support 5 as another embodiment. The elevating mechanism 9 includes a pair of left and right front and rear extension frame forming pieces 4 a forming a part of the body frame 4. , 4a, a pair of left and right guide slots 95, 95 extending in the front-rear direction are formed, and a sliding rod 96 extending in the left-right direction is inserted into both guide slots 95, 95 with a flanged roller 97. , 97, interlocking rods 98, 98 are provided between the left and right ends 96a, 96a of the sliding rod 96 and the base ends of the rear wheel drive cases 7, 7, and the sliding An elevating hydraulic cylinder 99 that expands and contracts in the front-rear direction is provided between the center part of the moving rod 96 and the center part of the horizontal frame forming piece 4b that is bridged between the front parts of the pair of left and right extension frame forming pieces 4a, 4a. It is configured with interposition.
[0057]
The flanged roller 97 is formed by a cylindrical roller piece 97a and a flange piece 97b formed on the inner side of the outer peripheral surface of the roller piece 97a. In addition, the flange piece 97b is brought into contact with the edge of the guide elongated hole 95 from inside.
[0058]
Also, stepped recesses are formed on the left and right sides of the sliding rod 96, and these stepped recesses are formed as flange piece receiving portions 96b, 96b. Each flange piece receiving portion 96b has a flange piece 97b. Are engaged with the inner peripheral edge.
[0059]
In this manner, since the flange piece 97b is held between the flange piece receiving portion 96b and the edge of the guide elongated hole 95, when an external force acts on the sliding rod 96 in the left-right direction, the external force is applied. Can be received by the flange piece 97b, so that the sliding rod 96 does not rattle in the left-right direction.
[0060]
In addition, since the sliding rod 96 can be slid in the longitudinal direction through the guide hole 95 through the roller main piece 97a, the rolling resistance of the sliding rod 96 is reduced, and the lifting hydraulic cylinder is lowered. After interlocking with the extension / retraction operation of 99, the lifting / lowering operation of the wheels 8, 8 can be performed smoothly.
[0061]
As shown in FIG. 5, the front wheel support 5 supporting the front wheels 6, 6 includes a fixed-side position adjusting piece 101 which is laid between the front portions of a pair of left and right front and rear extension frame forming pieces 4a, 4a. Each of the movable side position adjustment pieces 104, 104, which can be adjusted in slide position by adjustment bolts 103, 103 through position adjustment long holes 102, 102 formed in the fixed side position adjustment piece 101, is provided. The upper ends of the support arms 105, 105 extending in the vertical direction are attached to the side position adjusting pieces 104, 104, and the front wheels 6, 6 are attached to the lower ends of the support arms 105, 105.
[0062]
In this manner, the left and right front wheels 6, 6 adjust the sliding position of the movable side position adjustment pieces 104, 104 in the left and right directions by the adjustment bolts 103, 103 via the position adjustment long holes 102, 102, respectively. Thus, the position can be extended by an arbitrary amount in the left-right direction.
[0063]
FIG. 7 shows the structure of a front wheel support 5 as another embodiment. The front wheel support 5 includes a vertically extending support arm 110 vertically mounted on the body frame 4 and a support arm 110. A boss 111 attached to the lower end of the boss 111 with its axis oriented in the left-right direction, and a cylindrical rotary support piece 113 inserted through the boss 111 via a bearing 112 and rotatably supported on the same axis. A cylindrical shaft piece 114 inserted through the rotation support piece 113 from the left side, and a rod-shaped shaft piece 115 inserted through the rotation support piece 113 from the right side and also inserted into the cylindrical shaft piece 114. are doing.
[0064]
Pin holes 116 and 117 for positioning are formed in the left and right side portions of the rotation support piece 113 so as to penetrate in the vertical direction, respectively, and a plurality of position adjustment holes are respectively formed in the cylindrical shaft piece 114 and the rod-shaped shaft piece 115. The pin insertion holes 118 and 119 are formed at predetermined intervals in the axial direction and penetrate vertically.
[0065]
In this manner, the required pin insertion hole 118 formed in the cylindrical shaft piece 114 and the left pin hole 116 are matched with each other, and the positioning pin 120 is inserted into both holes 118, 116, so that the left front hole is formed. While the position of the wheel 6 can be adjusted, the required pin insertion hole 119 formed in the rod-shaped shaft piece 115 and the right pin hole 117 are matched with each other, and the positioning pin 120 is inserted into both holes 119 and 117. Thus, the position of the right front wheel 6 can be adjusted.
[0066]
FIG. 8 shows the structure of a front wheel support 5 as another embodiment. The front wheel support 5 has a support piece 121 suspended from a front portion of the body frame 4. The upper ends of the support arms 122 extending vertically in the direction 121 are pivotally supported via pivot shafts 123 extending in the front-rear direction, and the lower ends of the support arms 122 122 are provided with an axis in the left-right direction. The bosses 124, 124 are attached to each other, and the cylindrical rotary support pieces 125, 125 are rotatably supported on the respective bosses 124, 124 around the same axis. The front wheels 6, 6 are attached to outer ends of the adjusting support shafts 126, 126 through the shafts 126, 126, respectively.
[0067]
A plurality of position adjusting holes 127 are formed on the left and right sides of the support piece 121, and pin holes 128 for positioning are formed on the upper portions of the support arms 122, respectively. , 128 are aligned with the required position adjusting holes 127, 127, and the positioning pins 129, 129 are inserted into these holes 128, 127, so that the support arms 122, 122 are moved outward from the vertically suspended position. The position can be adjusted to the position inclined toward the direction.
[0068]
In this way, by adjusting the positions of the support arms 122, 122 outward in accordance with the lateral width of the bottom m of the groove M, the front wheels 6, 6 attached to the lower ends of the support arms 122, 122 can be mounted. The grooves M can be arranged at the corners C, C of the grooves M, and the collapse of the grooves M by the front wheels 6, 6 can be reduced.
[0069]
In addition, a positioning pin hole 130 is formed on the outer side of each rotation support piece 125, while a plurality of position adjusting holes 131 are formed in the adjusting support shaft 126, and a required position adjusting hole 131 is formed in the pin hole 130. In addition, by inserting a positioning pin 132 into these holes 130 and 131, the front wheel 6 attached to the outer end of the adjusting support shaft 126 can be adjusted in the lateral width direction. I have.
[0070]
【The invention's effect】
(1) According to the first aspect of the present invention, a seedling extracting mechanism and a planting mechanism are provided in the seedling transplanting section, and the planting mechanism connects the planting rotor case to the planting transmission case in an interlocking manner. The base end of the crank arm is connected to the attached rotor case, the bent portion of the L-shaped support is connected to the tip of the crank arm, and the planting claw is attached to the rear end of the L-shaped support. A guide roller is attached to the upper end of the L-shaped support, and the guide roller is slidably fitted in a vertically extending slide guide groove formed in the slide guide body, and In the transplanter in which the planting claws move up and down in a vertically long elliptical trajectory in conjunction with the turning operation of the case, the slide guide groove is formed to extend substantially vertically from the lower end to the middle. Along the way, from the middle to the upper end It is formed by extending the inclined shape toward.
[0071]
In this way, since the slide guide groove is formed so as to extend substantially vertically from the lower end portion to the middle portion, the planting claw remains in the vicinity of the lowest point which greatly affects the planting posture of the transplanted seedlings. As it becomes a vertical posture, and from the middle part to the upper end part, it is formed to extend obliquely upward and forward, so that the upper end part of the L-shaped support is moved forward at the uppermost point, The rear end of the L-shaped support is raised upward, and the planting claw attached to the rear end can be brought close to the seedling removal mechanism arranged above.
[0072]
As a result, the transplanted seedlings can be inherited straight into the planted nails, and when the transplanted seedlings are planted in the field scene by the planted nails, the transplanted seedlings can be planted in an upright state, It is possible to solve the problem of poor planting such as tilting.
[0073]
(2) According to the second aspect of the present invention, the distance between the upper end and the lower end of the slide guide groove in the front-rear direction is determined by the angle at which the seedling extraction claw provided in the seedling extraction mechanism is released and the highest position. Are set so that the angle at which the planted claws receive the seedlings is substantially the same.
[0074]
In this way, the relative angle between the seedling removal nail and the planting nail at the time of inheriting can be made substantially zero degree, and the transplanting seedling can be reliably and stably inherited.
[Brief description of the drawings]
FIG. 1 is an explanatory side view of a transplanter according to the present invention.
FIG. 2 is an explanatory plan view of the transplanter.
FIG. 3 is an enlarged side view illustrating a transplantation part.
FIG. 4 is an enlarged side view of an earth covering pressure setting / applying means.
FIG. 5 is an explanatory side view of a transplanter as another embodiment.
FIG. 6 is an explanatory plan view of a lifting mechanism.
FIG. 7 is a partially cutaway rear view of a front wheel support as another embodiment.
FIG. 8 is a partially cutaway front view of a front wheel support as another embodiment.
[Explanation of symbols]
A Transplanter G Field M Groove m Bottom n Pot Seedling 1 Running part 2 Seedling supply part 3 Seedling transplantation part

Claims (2)

A seedling removal mechanism and a planting mechanism are provided in the seedling transplanting section, and the planting mechanism connects the planting rotor case to the planting transmission case and connects the base end of the crank arm to the planting rotor case. The bent portion of the L-shaped support is connected to the tip of the crank arm, and a planting claw is attached to the rear end of the L-shaped support, while the guide is attached to the upper end of the L-shaped support. A roller is attached, and the guide roller is slidably fitted into a vertically extending slide guide groove formed on the slide guide body, and is interlocked with the rotation operation of the seeding rotor case, and is implanted. In a transplanter that the nail moves up and down in a vertically long elliptical orbit,
The transplanter, wherein the slide guide groove extends substantially vertically from a lower end portion to an intermediate portion, and extends obliquely upward and forward from the intermediate portion to the upper end portion. The distance between the upper end portion of the slide guide groove and the midway portion in the front-rear direction is substantially equal to the angle at the time of releasing the seedling of the seedling extraction claw provided in the seedling extracting mechanism and the angle at the time of receiving the seedling of the planted nail at the highest position. The transplanting machine according to claim 1, wherein the setting is made to be the same.

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