JP2011229461A - Seedling transplanting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To carry a land levelling rotor on a seedling transplanting machine, wherein the land levelling rotor enables to easily change a land levelling width of the land levelling rotor and can prevent pushing and falling down of seedlings on adjacent rows caused by water flow and soil pushed caused by the land levelling rotor.SOLUTION: In the seedling transplanting machine provided with a seedling planting device 15 for planting seedlings to a farm field moving upward and downward through a lift link device in the rear of a travelling vehicle, and the land levelling rotor 14 for levelling the farm field surface in front of a planting position, at the lower part of the seedling planting device 15, the land levelling rotor 14 capable of freely adjusting the land levelling width is constructed by arranging and installing two or more unit rotors 3 fixed with a land levelling plate 2 having a predetermined length to an outer peripheral part of a rotor rim 1 to a rotor drive shaft 4 and fixing an extension rotor shaft 6 fixed with an extension rotor 11 to the outer end part of the rotor drive shaft 4 so as to be freely slidable.

Description

  This invention is configured to change the leveling width of the leveling rotor for leveling the soil surface ahead of the float in a seedling transplanting machine that performs seeding planting work with a seedling planting device on the soil surface leveled by the float sliding Is.

  There is a technique (for example, see Patent Document 1) in which a leveling rotor is arranged on the front side of a float of a seedling planting device, and a soil surface leveled by the float is leveled in advance by this leveling rotor.

JP 2009-000083 A (5th page, FIG. 5).

  The leveling rotor leveles the soil surface around the seedling planting position of the seedling planting device, but when the soil is soft, it is pushed by the water flow generated by the rotation of the leveling rotor or the end of the leveling rotor. There is a problem that the mud soil will wash away the seedlings planted on adjacent strips, and the washed seedlings will be wasted.

  Also, if the soil is hard, the leveling rotor will only level the width of the leveling rotor, leaving irregularities at the seedling planting position, and if seedlings are planted in these irregularities, the planting depth will be too deep or shallow. In other words, there are problems that seedlings are washed away by water and wind, and there is a problem of poor growth due to lack of sunlight.

  When the seedling transplanter is transported or stored, there is a problem that if the width of the leveling rotor is narrow, the seed leveling rotor may protrude from the transport means (light truck or the like) or may not fit in the storage location.

  The present invention is intended to solve the above problems by making it possible to easily change the leveling width of the leveling rotor.

  According to the first aspect of the present invention, a seedling planting device (15) for planting seedlings in a field that moves up and down via a lifting link device is provided at the rear of the traveling vehicle body, and a planting position is provided below the seedling planting device (15). In a seedling transplanter provided with a leveling rotor (14) for leveling the farm scene on the front side of the rotor, a unit rotor (3) having a predetermined length of leveling plate (2) attached to the outer peripheral edge of the rotor rim (1) is driven by the rotor A plurality of shafts (4) are arranged side by side, and an extended rotor shaft (6) having an extension rotor (11) attached to the outer end portion of the rotor drive shaft (4) is slidably attached to adjust the leveling width. A seedling transplanting machine characterized in that a leveling rotor (14) was constructed.

  According to a second aspect of the present invention, the rotor drive shaft (4) and the extension rotor shaft (6) are each constituted by angular axes, and the extension rotor (6) is rotated by a predetermined angle from the rotor drive shaft (4). The configuration is characterized in that the extension rotor (11) is switched between a state where the extension rotor (11) is separated from the ground leveling rotor (14) and a state where the extension rotor (11) is close to the leveling rotor (14). The seedling transplanter described was used.

  According to a third aspect of the present invention, one end of the tension member (10) is provided in the hollow portion of the rotor drive shaft (4), and the other end of the tension member (10) is connected to the extension rotor. The seedling transplanting machine according to claim 1 or 2, wherein the seedling transplanter is provided on the shaft (6) and is configured to tension the extension rotor shaft (6) in the direction of the rotor drive shaft (4) by the tension member (10). It was.

  The invention according to claim 4 is characterized in that the inner end portion of the extension rotor (6) which is mounted on and mounted on the rotor drive shaft (4) is a round shaft (6a). A seedling transplanter according to any one of the above was used.

  Since the end rotor 11 is biased by the spring 10 so as to perform tension pressure movement in the leveling width direction, the end rotor shaft 6 is released from being fixed by releasing the fixing of the end rotor shaft 6 to the rotor drive shaft 4. The partial rotor 11 can be smoothly moved in the axial direction by the spring 10 pressure or against the spring 10 pressure.

  According to the first aspect of the present invention, the extended rotor shaft 6 is slidably provided on the outer end portion of the rotor drive shaft 4 constituting the leveling rotor 14 so that the extended rotor 11 is axially attached. If the leveling width of the leveling rotor 14 is widened by sliding and extending / removing the extension rotor 6 and the rotor drive shaft 4, the seedling planting position can be reliably leveled and flattened. Planting depth is too deep, poor growth and withering due to lack of sunshine, and planting depth is too shallow, and it is prevented from running out of water and wind, resulting in stable seedling growth To do.

  Then, by narrowing the leveling width of the leveling rotor 14, the water flow generated by the rotation of the leveling rotor 14, and the seedling in which the mud pushed out by the end of the leveling rotor 14 and the extension rotor 11 is planted in the adjacent strips Since it can be prevented from being washed away, a seedling missing line does not occur, and the growth of the seedling is stabilized.

  Further, when mounted on a transportation means such as a light truck or moved to a storage place such as a warehouse, the end of the extension rotor 11 can be prevented from protruding from the loading platform of the light truck or caught on the wall of the warehouse. Improves the efficiency of loading and storing the transplanter.

  When the extension rotor 11 is not required, the extension rotor shaft 6 can be removed from the rotor drive shaft 4, so that the leveling width of the leveling rotor 14 can be further shortened, and therefore generated by the rotation of the leveling rotor 14. The seedlings planted in the adjacent strips are more difficult to be pushed down by the flowing water and the mud pushed by the end of the leveling rotor 14, and the growth of the seedlings is stabilized.

  In addition, since it is difficult to protrude from the loading platform such as a light truck and is further prevented from being caught on a wall or the like at the storage location, the efficiency of the loading operation and the storage operation is further improved.

  In the invention according to claim 2, since the rotor drive shaft 4 and the extension rotor shaft 6 are respectively configured as angular axes, the extension rotor 6 shaft does not rotate independently even when the rotor drive shaft 4 is rotated. Since the extension rotor shaft 6 can be prevented from rotating and coming off during leveling, the work of re-fitting the extension rotor shaft 6 to the rotor drive shaft 4 becomes unnecessary, and the work efficiency is improved.

  Moreover, since the leveling width becomes narrow and it is possible to prevent unevenness from being left around the planting position of the seedling, the planting depth of the seedling can be stabilized, so that the growth of the seedling is stabilized.

  And since the rotor drive shaft 4 and the extension rotor shaft 6 are angular axes, the extension rotor 11 is close to the leveling rotor 14 with reference to the position where the angular axes fit together, or the extension rotor 11 is the leveling rotor. Since the leveling width of the leveling rotor 14 can be easily changed, it is possible to easily change the leveling width of the leveling rotor 14, so that it takes less time to adjust the leveling width and the work efficiency is improved.

  In the third aspect of the present invention, the extension rotor shaft 6 is tensioned in the direction of the rotor drive shaft 4 by the tension member 10 provided in the hollow portion of the rotor drive shaft 4, thereby extending by contact resistance with the farm field during leveling. Since the rotor 11 can be prevented from moving outward from the rotor drive shaft 4 and the width of the leveling rotor 14 can be prevented, the water flow generated by the rotation of the leveling rotor 14, the end of the leveling rotor 14, and the farm field pushed out by the extension rotor 11 can be prevented. This prevents mud from flowing away the seedlings planted in adjacent strips, and the growth of the seedlings is stabilized.

  Moreover, by installing the tension member 10 in the hollow portion of the rotor drive shaft 4, it is possible to prevent mud from adhering to the tension member 10 and entanglement of foreign matters such as sawdust and weeds.

  In the fourth aspect of the invention, the end of the extended rotor shaft 6 is constituted by the round shaft 6a, so that the extended rotor shaft 6 is not completely detached from the rotor drive shaft 4, and only the round shaft 6a is the rotor drive shaft. 4, when the extension rotor shaft 6 is moved outward until it is in the state of being located inside 4, the phase of the extension rotor 11 can be changed by rotating the extension rotor shaft 6 by a predetermined angle. Changes are easy and work efficiency is improved.

Side view of seedling transplanter Top view of seedling transplanter Top view of leveling rotor Expanded side view of leveling rotor Side view of leveling rotor Front view of leveling rotor Side view of the leveling rotor of another embodiment Front view of the leveling rotor of another embodiment Front view showing the mounting state of the extension rotor Front view showing the operating state of the extension rotor Side view of seedling planting apparatus of another embodiment Plan view of seedling planting apparatus of another embodiment (A) Side view of float portion of another embodiment (b) Bottom view of float portion of another embodiment (A) Side view of float portion of another embodiment (b) Front view of float portion of another embodiment Side view of auxiliary seedling receiving frame of another embodiment The side view which shows the operation state of the auxiliary seedling receiving frame part of another Example. The side view which shows the operation state of the auxiliary seedling receiving frame part of another Example. The side view which shows the operation state of the auxiliary seedling receiving frame part of another Example.

  Based on the drawings, the leveling rotor 14 is mounted on a seedling planting device 15 of a seedling planting machine. The seedling transplanter includes a front wheel 17 steered by a handle 16 on a steering post and a tractor vehicle body 21 in a four-wheel traveling form in which traveling wheels (rear wheels) 20 driven by an engine 19 mounted under a driver's seat 18 are arranged. The seedling planting device 15 is mounted on the rear side of the vehicle body 21 through a lift link 22 in the form of a parallel link so as to be movable up and down. An auxiliary seedling receiving frame 24 is provided on the front outer side of the side floor 23 of the vehicle body 21 and a seedling tray on which mat seedlings have been raised is placed. A transmission case 25 and a hydraulic continuously variable transmission 26 are provided between the front wheels 17 at the front of the vehicle body 21, and the hydraulic continuously variable transmission 26 is driven from the engine 19. The front wheel 17 and the rear wheel interlocking shaft 27 are transmitted via the auxiliary transmission device and the like, and the traveling wheel 20 is transmitted to the rear axle 28 and the like of the shaft. In addition, the seedling planting input shaft 29 of the seedling planting device 15 is transmitted from the mission case 25 through the PTO shaft. The lift link 22 is lifted and lowered by hydraulic expansion / contraction of a lift cylinder 30 at the rear of the vehicle body 21.

  The seedling planting device 15 receives a mat seedling and reciprocates left and right in the horizontal direction, and feeds it toward the seedling separation port 32 at the rear lower end by intermittent driving of the feeding belt 31. And a seedling planting claw 35 that operates to plant seedlings by drawing an elliptical seedling planting locus line D behind the seedling planting transmission case 34 to support the lower surface of the seedling planting transmission case 34 36 is arranged as a center float 36A in the lower center part and side floats 36B and 36C on the left and right side parts, and is supported so as to be swingable up and down around the float shaft 37 in each rear part. The depth of the sliding soil surface is detected by the vertical swing of the center float 36A, the control valve of the hydraulic circuit of the lift cylinder 30 is operated, and the seedling planting device 15 is moved up and down to keep the planting depth constant. Ascending / descending control can be performed so as to be maintained. The seedling claw 35 intervenes in the seedling separation port 32 of the seedling tank 33 at the upper end operating position of the seedling planting locus line D as a multi-row planting form that operates corresponding to the flat portions on the left and right sides of each float 36. While separating the seedlings, the held seedlings are lowered to the leveled soil surface by the float 36 and planted to an appropriate depth.

  The leveling rotor 14 is disposed on the front side of each float 36 and is driven via a rotor interlocking shaft 39 from the transmission mechanism portion of the rear axle transmission case 38 that supports the rear axle 28. Since the center float 36A is long and protrudes forward with respect to the side floats 36B and 36C, the leveling rotor 14 disposed on the front side of the center float 36A is provided with a side float that is opposite to the front side of the center float 36A. The center float 36A and the center rotor 14A are arranged in front of the side rotors 14B and 14C facing the front side of 36B and 36C. The side floats 36 </ b> B and 36 </ b> C and the side rotors 14 </ b> B and 14 </ b> C are provided so as to face the rear side portions of the left and right traveling wheels 20 and are arranged symmetrically with respect to the center line L.

  A rotor frame 42 is provided so as to be able to swing up and down via a pair of upper and lower link arms 41 with respect to a seedling planting frame 40 provided along the front side of the seedling planting transmission case 34 and the like. Each leveling rotor 14 is disposed below the rotor frame 42. A bearing arm of a bearing holder 43 for bearing the rotor drive shaft 4 of the side rotors 14B and 14C is attached to the lower end portion of the rotor frame 42. The leveling rotor 14 attached to the lower end portion of the rotor frame 42 supports the left and right ends of the rotor drive shaft 4 of the center rotor 14A between the front ends of the pair of left and right rotor transmission cases 45. The inner end portion of the rotor drive shaft 4 of the side rotors 14B and 14C is supported at the rear end portion. Between these rotor transmission cases 45, before bearing on the rear end, and between the rear rotor drive shafts 4, they are linked together to rotate together. Among these, the inner end portions of the rotor drive shafts 4 of the left side rotors 14B and 14C are interlocked with each other via a rotor interlocking shaft 39 including a spline shaft that can be expanded and contracted from the front, a bevel gear, and the like. The rotor interlocking shaft 39 is connected to the rotor take-out shaft 46 of the rear axle transmission case 38 and can be transmitted by operating a clutch provided on the rotor take-out shaft 46. When the left side rotors 14B and 14C are transmitted and rotated from the rotor take-out shaft 46, the center rotor 14A is rotated via the chain in the rotor transmission case 45, and further, via the chain in the right rotor transmission case 45, The right side rotors 14B and 14C are rotated. The lift leveling rotor 14 can be moved up and down together with the seedling planting device 15 connected via the lift link 22 by the expansion and contraction of the lift cylinder 30. With respect to the seedling planting frame 40 of the seedling planting device 15, By rotating the link arm 41 by lever operation, the leveling rotor 14 can be moved up and down or adjusted up and down. A balance spring 47 is provided between the upper end portion of the rotor frame 42 and the front portion of the rotor transmission case 45 to reduce the weight of the center rotor 14A. A rotor cover 48 covers the upper peripheral portion of each rotor 14.

  As described above, the side rotors 14 </ b> C at the left and right ends are arranged to rotate around the extension axis of the rotor drive shaft 4 at the outer side of the side rotor 14 </ b> B. The side rotor 14C is disposed on the front side of the side float 36C disposed outside the side float 36B, and the seedling planting claws 35 are leveled by the side float 36C while leveling the soil surface leveled by the side rotor 14C. The seedling planting action is performed.

  The leveling rotor 14 has a rotor boss 51 formed with a square boss hole 50 at the center of the rotor rim 1, and a unit rotor having a predetermined width in which a leveling plate 2 having a predetermined length is integrally attached to the outer periphery of the rotor rim 1. It consists of three. A large number of the unit rotors 3 are arranged and attached along the rotor drive shaft 4, and the rotor boss 51 of each unit rotor 3 is attached to the rotor transmission case 45. It can be fitted to the outer periphery and attached to rotate integrally. The rotor boss 51 and the disk-shaped rotor rim 1 on the outer peripheral portion are integrally formed, and the leveling plate 2 parallel to the rotary drive shaft 4 is disposed on the outer peripheral end of the rotor rim 1 and attached integrally. The leveling plate 2 is configured in a T-shape (see FIGS. 8 and 9) by integrally connecting the center position of the axial width length to the rotor rim 1 by welding or the like. Further, in some unit rotors 3, end rotors 11 and the like, the horizontal end of the leveling plate 2 may be connected to the rotor rim 1 to form an L shape (see FIGS. 6 and 9). it can.

  The ground leveling plate 2 disposed on the outer periphery of the rotor rim 1 is set to be equally spaced as shown in the examples (FIGS. 5 and 7), and is inclined so as to enter the center side with respect to the rotational direction A. Has surface b. Therefore, when the leveling plate 2 is in rotational contact with the soil surface, the sloping surface is driven by striking the mud so as to press it from the front side to the rear side according to the angle of the inclined surface b. The pressed mud is pushed up to the rear side while propelling and propelled to level the soil surface. And the plate | board space | interval 8 which the leveling plate 2 between the unit rotors 3 adjacent to the rotor drive shaft 4 longitudinal direction can be located in the arrangement space | interval board | plate part before and behind the rotation direction (a) of each leveling board 2 is formed. .

  Further, when the rotor bosses 51 of the unit rotors 3 adjacent to each other in the axial length direction are fitted and mounted on the same rotor drive shaft 4, the unit rotor 3 having the same arrangement phase of the leveling plate 2 with respect to the rotor boss 51 is pivoted. In the case of mounting in the direction, it can be in the form of a single plate leveling plate in which the horizontal end surfaces of the leveling plates 2 are in contact with each other and connected across the width of the leveling rotor. When unit rotors 3 having different base plate 2 arrangement phases are connected to each other (see FIGS. 5, 6 to 7, and 8), the phase of the leveling plate 2 is shifted by 30 degrees so as to be adjacent to each other. The side edge of the leveling plate 2 at the position can be set in a state where it is inserted into the plate interval portion 8, so that the adjacent unit rotors 3 can be mounted with the axial interval close to each other.

  Further, in such a mounting form of the unit rotor 3, since the length of the leveling plate 2 in the leveling width direction is large, when the side end portion is in contact with the adjacent rotor rim 1 and the mounting position is limited, 7. By forming the rim interval portion 9 of the notch recess in the outer peripheral edge portion of the rotor rim 1 as shown in FIG. 8, the side end portion of the adjacent leveling plate 2 is positioned at the rim interval portion 9 to Limits can be removed.

  In this way, the position of the rotor boss 51 of each leveling rotor 2 fitted to the rotor shaft 4 is prevented from rotating by inserting the set pin through the pin holes 52 and 53 formed between the rotor drive shaft 4 and the rotor boss 51. be able to.

  At this time, the leveling rotor according to the present invention is implemented in the side rotor 14C (mainly, see FIGS. 9 and 10). In this leveling rotor, a leveling plate 2 of a certain length is arranged on the outer periphery of the rotor rim 1 and the phase of the leveling rotor 14 is rotated around the rotor drive shaft 4 so that the phase in the rotational direction is different from that of the leveling rotor 14. The end rotor 11 having the end leveling plate 5 arranged differently is mounted on the amplifying shaft by the end rotor shaft 6 and the end rotor shaft 6 is inserted into and removed from the rotor drive shaft 4. The ground leveling rotor of the seedling transplanter is characterized by changing the area.

  In the seedling planting operation of the seedling machine, the leveling rotor 14 and the end rotor 11 are rotated by driving the rotor drive shaft 4, and the leveling plates 2 and the end leveling plates 5 are rotated in contact with the soil surface. Thus, the large uneven surface of the soil surface is flattened, and the leveling action by the float that slides on the soil surface of the leveling track is easily performed. An end mounted by an end rotor shaft 6 that is fitted to the rotor drive shaft 4 and can be expanded and contracted in the axial direction at a lateral end portion of the leveling rotor 14 attached to the shaft end portion of the rotor drive shaft 4. The section rotor 11 is provided, and the leveling width area can be expanded and contracted by extending / contracting the end rotor shaft 6 and attaching / detaching operation. When the end rotor 11 is not necessary, It can be pulled out and removed at the end rotor shaft 6 part.

  Further, the end rotor shaft 6 is connected to the rotor drive shaft 4 so that the end rotor shaft 6 can be expanded and contracted as a square shaft fitting, and the phase of the end leveling plate 5 in the rotational direction with respect to each leveling plate 2 by inserting and removing the end rotor shaft 6 The leveling width range can be changed by changing the position.

  When the ground leveling rotor 14 and the end rotor 11 are attached to the rotor drive shaft 4 and the leveling width is changed by the leveling rotor 14 or the like, the plate interval portion 8 between the leveling plates 2 of the leveling rotor 14 is used. The end rotor shaft 6 of the end rotor 11 on which the end leveling plate 5 is disposed so as to be opposed to the heel is stretched and contracted in the horizontal direction by angular axis fitting, and the leveling width range Change or adjust. The phase position of each end leveling plate 5 with respect to each leveling plate 2 does not change depending on the change of the leveling width range.

  The ground leveling rotor 14 or the end rotor 11 is provided with rotor rims 4 and 7 that engage and hold the inner edges of the opposing leveling plates 2 and end leveling plates 5.

  As described above, the leveling width region can be expanded or reduced by attaching / detaching the end rotor 11 to / from the lateral end of the leveling rotor 14 or adjusting the movement in the axial direction. At this time, the leveling plate 2 of the leveling rotor 14 And the end leveling plate 5 moved in the axial direction in the form of alternately biting into the plate interval portion 8 between the leveling plates 2, the inner edges of the leveling plate 2 and the end leveling plate 5 are mutually connected. The opposing leveling rotor 14 and the rotor rims 1 and 7 of the end rotor 11 are engaged and supported so that the leveling plate 2 of these leveling rotors 14 or the opposite end of the end leveling plate 5 of the end rotor 11 is free. It makes it protrude long as an edge part, and makes it easy to carry out expansion / contraction change of the leveling width area.

  Further, a spring 10 is provided in the hollow portion of the rotor drive shaft 4, and the end rotor shaft 6 of the end rotor 11 fitted to the rotor drive shaft 4 is tensioned and biased in the axial direction.

  Since the end rotor 11 is biased by the spring 10 so as to perform tension pressure movement in the leveling width direction, the end rotor shaft 6 is released from being fixed by releasing the fixing of the end rotor shaft 6 to the rotor drive shaft 4. The part rotor 11 can be smoothly moved in the axial direction by the spring 10 pressure or against the spring 10 pressure.

  The side rotor 14C at the lateral end of the fuselage is provided with the rotor drive shaft 4 in the region of the side rotor 14B located inside thereof, and the hollow portion at the lateral outer end of the rotor drive shaft 4 is provided inside the side rotor 14C. The end rotor shaft 6 located at the end is continuously inserted and fitted.

  Since the leveling width of the side rotor 14C is wide, when the rotor width is equal to the width of the plurality of unit rotors 3, an appropriate number of unit rotors 3 are interposed inside the end rotor 11, and the outermost side The end rotor 11 is attached to the end.

  The configuration in which the end rotor shaft 6 of the end rotor 11 is fitted into the hollow portion of the rotor drive shaft 4 is drawn between the pin 54 of the rotor drive shaft 4 and the tip of the end rotor shaft 6. A spring 10 is applied to tension the end rotor shaft 6 and the end rotor 11 toward the rotor drive shaft 4. The unit rotor 3 corresponding to the leveling width of the side rotor 14C is fitted to the lateral end portion of the rotor drive shaft 4, and the end rotor shaft 6 of the end rotor 11 is fitted to this tip portion.

  As described above, the square boss hole 50 is formed in the rotor boss 51 of the unit rotor 3, and the square boss hole 50 is fitted to the outer peripheral portion of the rotor drive shaft 4 formed in a square tube shape with a square cross section. In addition, since the hollow portion of the rotor drive shaft 4 also forms a hollow portion having a square cross section, and the end rotor shaft 6 fitted into the hollow portion is also formed in a square cross section, this end rotor shaft 6 portion The relative phase position of the end leveling plate 5 of the end rotor 11 that slides in the axial direction with respect to the leveling plate 2 of the leveling rotor 14 is maintained at the same position and does not change. The end rotor 11 is elastically biased inward by the spring 10 and the unit rotor 3 of the inner side rotor 14C is also bulleted toward the side rotor 14B to maintain a predetermined leveling width. It is.

  When the position of the end rotor 11 is determined as described above, it is set in a pin hole formed between the end rotor shaft 6 and the rotor drive shaft 4 of the end rotor 11 in order to fix this position. Pins can be inserted and positioned. As described above, when the unit rotor 3 having the arrangement phase of the leveling plate 2 is changed to the end of the rotor driving shaft 4 or when the unit rotor 3 is attached or detached, the spring connected to the end rotor shaft 6 is used. 10 is once removed, and the end rotor shaft 6 is removed from the rotor drive shaft 4.

  Next, mainly based on FIGS. 11 and 12, the weight disk 61 is attached to the planting arm rotor 60 to which the seedling planting claws 35 are attached and driven to rotate, and rotates integrally around the seedling driving shaft 62. As a result, the driving balance of the planting claws 35 is achieved. The planting arm rotor 60 is attached to the left and right sides of the seedling planting drive shaft 62 and rotated at the rear end of the seedling planting transmission case 34.

  The seedling planting transmission case 34 accommodates a planting transmission mechanism such as a non-constant speed transmission gear, and opens / closes each planting claw 35, a seedling pushing claw pushing operation, or an operation timing thereof. This seedling planting operation generates vibration due to drive rotation, but the weight disk 61 is attached to the planting arm rotor 60 and the vibration and behavior are absorbed by the integral rotation. Thus, an accurate seedling planting operation can be performed stably.

  Further, on the front side of the rotor cover 48 of the side rotors 14B and 14C, a cover edge 64 made of a rubber plate and inclined so that the inner end side of the front lower edge is raised and the outer end side is lowered is formed. A front cover 63 is provided, and the cover edge 64 of the front cover 63 is slidably brought into contact with the soil surface area to be leveled by the side rotors 14B and 14C. The flow is guided to the inner area of the area to prevent the disturbance of the existing seedlings of the adjacent strips planted outside.

  In the invention shown in FIG. 13, scale-like scales 65 are formed on the bottom surface of the float 36 of the seedling planting device 15 to reduce mud pushing and sliding resistance when sliding on the soil surface.

  The invention shown in FIG. 14 is formed by projecting fins 66 of appropriate thickness and height on the bottom surface of the float 36, thereby reducing shaking and mud pushing of the float 36 and maintaining stable sliding. Is.

  In the invention shown in FIGS. 15 to 18, a plurality of shelf frames 68, 69, and 70 are provided at appropriate height intervals on a column 67 standing on the vehicle body 21. The lowermost shelf frame 68 is fixed horizontally in the front-rear direction, the upper middle shelf frame 69 and the uppermost shelf frame 70 are pulled out to the front side (see FIGS. 16 and 17), and the rear side. It is the form which can be pulled back to (refer FIG. 15). Each shelf frame 68, 69, 70 has a shelf plate 71 on which a seedling tray on which the mat seedling N is raised can be placed, and a seedling tray is placed on the upper surface of the shelf plate 71 or this seedling tray is taken out. To be able to.

  The middle and upper shelf frames 69 and 70 are provided with a hook-shaped or L-shaped support arm 72 in a side view, and the front end portions of the shelf frames 69 and 70 are attached to the front end portion of the support arm 72. The support pin 73 is supported. The support arm 72 has a guide pin 74 at the rear end thereof, and the guide pin 74 is fitted into a guide groove 75 formed on the bottom or inside of the lower shelf frames 68 and 69 in the front-rear direction. , Slide guide in the front-rear direction.

  The upper shelf frames 69 and 70 are each provided with a hook 76 at the bottom of the rear end, and the hooks 76 are engaged with the shelf rails 78 of the column 67, whereby the upper shelf frames 69 and 70 are connected to each other. , And can be supported in parallel with the lower shelf frame 68. Further, the hooks 76 at the rear end portions of the shelf frames 69 and 70 are arranged at the edge of the rear end portion of the support arm 72 that supports the shelf frames 69 and 70 when the shelf frames 69 and 70 are pulled out to the front side. It is a form which carries out support engagement, The movement of the shelf frames 69 and 70 is controlled.

  Then, a stopper 79 is provided at the lower part of the front end of each shelf frame 68, 69 to lock the forward and downward rotation of the drawn shelf frames 69, 70 (see FIG. 17), and keep the posture as horizontal as possible. This makes it easier to mount the seedling tray.

Reference Signs List 1 rotor rim 2 leveling plate 3 unit rotor 4 rotor drive shaft 5 end leveling plate 6 end rotor shaft (extension rotor shaft)
7 Rotor rim 8 Plate spacing 9 Rim spacing 10 Spring (Tension member)
11 End rotor (extension rotor)
14 Leveling rotor 14A Center rotor 14B Side rotor 14C Side rotor

Claims (4)

A planting device (15) for planting seedlings in a field that moves up and down via a lifting link device at the rear of the traveling vehicle body, and leveling the field scene in front of the planting position below the seedling planting device (15) In the seedling transplanter provided with the rotor (14),
A plurality of unit rotors (3) each having a predetermined length of a leveling plate (2) attached to the outer peripheral edge of the rotor rim (1) are provided side by side on the rotor drive shaft (4), and are arranged at the outer end of the rotor drive shaft (4). A seedling transplanting machine comprising a leveling rotor (14) having a leveling width adjustable by slidingly mounting an extension rotor shaft (6) on which an extension rotor (11) is axially mounted.   The rotor drive shaft (4) and the extension rotor shaft (6) are each constituted by a square shaft, and the extension rotor (6) is rotated by a predetermined angle from the rotor drive shaft (4) so that the extension rotor (11) is a leveling rotor. The seedling transplanter according to claim 1, wherein the seedling transplanter is configured to switch between a state in which the extension rotor (11) is close to the leveling rotor (14) and a state in which the extension rotor (11) is in proximity to the leveling rotor (14).   One end portion of the tension member (10) is provided in the hollow portion of the rotor drive shaft (4), and the other end portion of the tension member (10) is provided in the extension rotor shaft (6). The seedling transplanter according to claim 1 or 2, wherein the pressure member (10) is configured to tension the extension rotor shaft (6) in the direction of the rotor drive shaft (4). 4. The seedling transplanter according to any one of 1 to 3, wherein an inner end portion of the extension rotor (6) mounted on the rotor drive shaft (4) is a round shaft (6a).

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