JP4113457B2 - Graft leveling device for transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a leveling device for a transplanter such as a riding rice transplanter.
[0002]
[Prior art]
Conventionally, in a riding rice planting machine in which a cutting rotor is attached in front of a planting apparatus mounted on a traveling machine and planting seedlings almost simultaneously with the cutting, it is rotationally driven via a support arm of the planting apparatus. There is known a riding device for riding rice transplanters in which a cutting rotor is detachably attached to a driving shaft horizontally mounted on the driving shaft without removing the driving shaft (see, for example, Patent Document 1).
[0003]
This scraping device is installed in front of the float of the planting device in such a manner that it can be grounded over the entire width of the planting width, and the drive shaft having a hexagonal cross section is supported on the transmission case side and extends forward. The drive shaft is supported by a support mechanism having a support arm, and the drive shaft is inserted into a gear case so that the drive shaft can be rotated instead of a transmission shaft extending rearward of the machine body. A plurality of scraper rotors formed on the unit body are attached.
[0004]
This scraping rotor protrudes on the outer surface of a disc-shaped support frame that is attached and fixed to the left and right with a predetermined interval on the drive shaft, on the surface of a semicircular arc plate formed in two in the circumferential direction. The scrapers in which the teeth are arranged in a zigzag shape are detachably attached by attaching screws, and the support frame is detachably fixed to the drive shaft by a fixing tool.
[0005]
[Patent Document 1]
JP-A-9-285201 (2nd page, FIG. 1)
[0006]
[Problems to be solved by the invention]
However, according to the above-mentioned conventional example, when planting work while leveling, if there are grass and straw or other mixed objects in the field, it winds around the drive shaft and grows to improve leveling performance. There was a problem of giving an unfavorable influence.
[0007]
The present invention has been made to solve such a problem, and the object of the present invention is to prevent grass and straws and other foreign objects from being wound around the mounting shaft, thereby improving the leveling performance. An object of the present invention is to provide a leveling device for a transplanter.
[0008]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention supports the transplanting device (24) for transplanting seedlings in the field at the rear of the traveling body (13) and levels the field in front of the transplanting device (24). In the transplanter (10) in which the leveling rotor (40) is rotatably attached,
The leveling rotor (40) includes a mounting plate (60) attached to a mounting shaft (41) and a plurality of ground leveling plates (61) arranged at substantially equal intervals on the outer periphery of the mounting plate (60). ) And
At the axial end of the ground leveling rotor (40), the clamping shaft (41) is sandwiched radially inward of the leveling plate (61) protruding outward in the axial direction from the mounting plate (60). A wrapping prevention member (64) for preventing wrapping of miscellaneous objects is attached.
[0009]
Furthermore , the said winding prevention member (64) has a ring-shaped member (64a) which prevents a foreign material from entering from the axial direction edge part of the said leveling board (61) , This ring-shaped member (64a) Is attached to the mounting shaft (41) with a connecting pin (65) extending in a direction substantially orthogonal to the mounting shaft (41), and the connecting pin (65) is attached to the mounting shaft with a spring (68). (41) It is biased so as to be directed to the side, and the ring-shaped member (64a) is attached to the ring member (64a) so as to be present in the ring.
[0010]
[Action]
According to the present invention, the wrapping prevention member (64) is provided at the axial end of the leveling rotor (40) and radially inward of the leveling plate (61) protruding outward in the axial direction from the mounting plate (60). ) Is attached, from the space between the circumferential directions of the plurality of leveling plates (61) protruding outward in the axial direction from the mounting plate (60) as the leveling rotor (40) rotates. Interstitial objects such as grass and straw enter and are prevented from being wound around the attachment shaft (41), thereby improving the leveling performance.
[0011]
In addition, the code | symbol in the parenthesis mentioned above is for referring drawings, Comprising: This invention is not limited at all.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
FIG. 1 is an overall side view of a riding rice transplanter to which the present invention is applied and capable of simultaneous grafting. The riding rice transplanter 10 includes a traveling machine body 13 supported by a front wheel 11 and a rear wheel 12, an engine 14 from the front, and a steering unit 17 having a steering handle 15 and a seat seat 16 at a rear part thereof. Behind, a planting portion 24 is supported by a hydraulic cylinder (not shown) through a lifting / lowering link mechanism 22 having an upper link 22a and a lower link 22b.
[0014]
A link holder 26 is pivotally attached to the rear end portion of the elevating link mechanism 22, and the planting portion 24 is supported by a rolling shaft (not shown) protruding rearward from the link holder 26 so as to be freely rollable. ing. In the planting part 24, a mat seedling is placed, and a seedling placing table 30 that is inclined forward and backward so that the back is lowered, and a number of seedlings are scraped from the seedling placing table 30 and transplanted to a farm field. A planting rod 31, a planting case 32 to which the planting rod 31 is attached, a rectangular tube-shaped planting part frame 34, and the like are integrally disposed. Power is supplied to the planting case 32 from a planting PTO shaft (not shown), and a flow rod 35 having a sliding function is provided below the planting case 32. Further, a leveling device 38 for leveling the farm field is supported on the planting part frame 34 of the planting part 24.
[0015]
The seedling mount 30 has four fixed seedling mounting portions 30a on the center side in the left-right direction of the machine body, and two movable seedling mounting portions 30b located on the left and right outer sides of the fixed seedling mounting portions 30a. The portion 30b is switchable between a working posture (see FIG. 1) deployed in the left-right direction of the machine body relative to the fixed seedling placement portion 30a and a folding posture (see FIG. 2) folded by the folding mechanism 37. .
[0016]
The planting part frame 34 has a fixed frame 34a on the center side in the left-right direction of the machine body and a movable frame 34b that is detachably attached to and fixed to the end of the fixed frame 34a. Has a fixed-side planting case 32a and a movable-side planting case 32b. A fixed planting case 32a is attached to the fixed frame 34a, and a movable planting case 32b is attached to the movable frame 34b. The movable-side planting case 32b is rotatably connected to a support shaft 36 fixed to a mounting arm 33 that stands up toward the rear upper side of the fixed-side planting case 32a. The case 32b and the movable frame 34b rotate integrally, and can be switched between a working posture and a folding posture.
[0017]
The leveling device 38 includes a plurality of leveling rotors 40 disposed in a space in front of the planting portion 24 and between the rear wheels 12, and the leveling rotor 40 is a rotor shaft (mounting shaft) 41. Is rotatably supported by the shaft. By this leveling rotor 40, the leveling rotor 40 is leveled at a headland in a farming field after roughing caused by turning of the traveling machine body 13 during planting work, and the leveling of the headland and the like is performed. Since the leveling rotor 40 is disposed in front of the planting portion 24, seedlings can be planted on a headland or the like after leveling by the leveling rotor 40.
[0018]
Next, the support structure of the leveling device 38 will be described. A bracket 50 protrudes from the planting part frame 34 toward the front of the machine body, and a cylindrical guide 51 is attached to the end of the bracket 50 with its longitudinal direction facing up and down. On the other hand, a shaft 45 is rotatably supported on the upper side of the vertical frame 44 disposed on the lower surface side of the seedling table 30, and arms 46 are provided on both sides of the shaft 45 in the left-right direction. Has been. Further, the upper end of the rod 47 is pivotally attached to the distal end side of the arm 46 so as to be rotatable. Further, a support rod 48 is pivotally supported on the lower end side of the rod 47, and a rotor shaft 41 of the leveling rotor 40 is pivotally supported on the lower end side of the support rod 48. The support rod 48 is slidably fitted into the guide 51 described above. Further, a lever 52 is attached to the shaft 45, and the shaft 45 is rotated by the swinging operation of the lever 52, and the support rod 48 is slid up and down via the arm 46 and the rod 47, and is used for leveling. The rotor 40 moves up and down. Reference numeral 55 denotes a rotor cover.
[0019]
Next, as shown in FIG. 3, a gear case 53 is provided at an intermediate portion in the axial direction of the rotor shaft 41, and a drive case 49 is provided on the traveling machine body 13 side (see FIG. 1). . A driving force is input to the gear case 53 by a driving shaft 54, and the leveling rotor 40 is rotated by operating a clutch disposed in the driving case 49. The leveling rotor 40 is attached over substantially the entire width of the planting portion 24 between the gear case 53 and the left and right support rods 48 and outside the left and right support rods 48.
[0020]
The ground leveling rotor 40 includes a mounting plate 60 attached to the rotor shaft 41 and a plurality of ground leveling plates 61 arranged on the outer peripheral portion of the mounting plate 60 at substantially equal intervals. Has a plate-like shape that scrapes the farm scene as the leveling rotor 40 rotates, and the mounting plate 60 connects the leveling plates 61 at both the left and right ends in the axial direction and the center side. The left and right end portions of the leveling plate 61 protrude outside the mounting plate 60 on the left and right end sides in the axial direction. In this embodiment, as shown in FIG. 5A, the leveling rotor 40 is divided into two substantially symmetrically with the rotor shaft 41 in between, and two pieces of the same shape (on the left and right sides in the figure). The mounting plate 60 and the leveling plate 61 are integrally formed of synthetic resin. Then, a pin 58 is inserted orthogonally to the rotor shaft 41, and both ends of the pin 58 are inserted into the divided plate on the side of the mounting plate 60, and the two divided pieces are fixed with bolts 62 and nuts 63. is doing. Thus, the leveling rotor 40 is configured to rotate integrally with the rotor shaft 41.
[0021]
Note that the left and right end portions of the leveling plate 61 in the longitudinal direction project outside the mounting plate 60 on the left and right end sides in the longitudinal direction. This is because in order to use the same leveling rotor 40 in providing the rotor 40, it is necessary to overlap the leveling plates 61 with respect to a certain portion of the leveling rotor 40 in the axial direction.
[0022]
In FIG. 3, the leveling rotor 40 ′ for adjustment is for adjusting the width direction in order to attach the leveling rotor 40 over substantially the entire width of the planting part 24 as described above. As shown in FIG. 5 (b), the leveling rotor 40 ′ is disposed so as to be inclined by about 30 ° with respect to the leveling rotor 40, and is flush with the leveling rotor 40 in the axial direction. Installed in duplicate.
[0023]
In this embodiment, as shown in FIGS. 4 and 6, at the axial end of the leveling rotor 40, the rotor is disposed radially inward of the leveling plate 61 protruding axially outward from the mounting plate 60. A wrapping preventing member 64 for preventing the tangled material from being wound around the shaft 41 is attached. That is, as described above, the left and right end portions in the axial direction of the leveling plate 61 protrude outward in the axial direction from the mounting plate 60, and as the leveling rotor 40 rotates, There is a possibility that foreign objects such as grass and straw enter from the space between the circumferential directions and wind around the rotor shaft 41. Therefore, the space is closed by the wrapping prevention member 64 to prevent foreign matters from entering the leveling plate 61.
[0024]
The wrapping preventing member 64 has a bottomed cylindrical thin ring-shaped member 64a, and the ring-shaped member 64a is disposed so as to be inscribed in a large number of leveling plates 61 (six in the figure). The ring-shaped member 64 a is attached to the rotor shaft 41 with a connecting pin 65 extending in a direction substantially orthogonal to the rotor shaft 41.
[0025]
That is, an E-ring 66 is attached to the middle portion of the connecting pin 65 in the longitudinal direction, an operation fitting 67 is interposed between the E-ring 66 and the rotor shaft 41, and further, the E-ring 66 and the ring-shaped member 64a. A spring (compression) 68 is contracted between the inner peripheral surface. By this spring (compression) 68, the connecting pin 65 is constantly urged toward the rotor shaft 41 side. Further, the connecting pin 65 is present in the ring with the ring-shaped member 64a attached, and does not protrude in the radial direction from the ring-shaped member 64a. Prevents wrapping of miscellaneous items. The ring-shaped member 64a is made of metal in the present embodiment, but is not limited to this and may be made of, for example, synthetic resin.
[0026]
Specifically, as shown in FIG. 3, the anti-winding member 64 is attached to the axial end of the second leveling rotor 40 from the left and right ends in the body width direction. This is because the rotor shaft 41 of the leveling rotor 40 on both the left and right ends is connected to the rotor shaft 41 on the inner side in the axial direction at the attachment position of the anti-winding member 64, and the interstitial material is caught in this connecting portion. This is because there is an adverse effect on the leveling performance, and inconvenience occurs when removing the leveling rotor 40 at both the left and right ends. Further, when the seedling stage 30 is folded, the rotor shaft 41 of the leveling rotor 40 on both the left and right ends is removed from the connecting portion of the rotor shaft 41 described above.
[0027]
In this embodiment, the connecting pin 65 attaches the ring-shaped member 64a to the rotor shaft 41, and the connecting pin 65 connects the rotor shaft 41 of the leveling rotor 40 on the left and right ends to the axially inner rotor. It serves to connect to the shaft 41. In other words, the connecting pin 65 serves to combine both the attachment of the ring-shaped member 64a and the attachment of the rotor shafts 41 at the left and right ends at the connecting portion.
[0028]
Next, the operation will be briefly described.
[0029]
After riding the riding rice transplanter 10 into the field with shallow irrigation on the cultivated field, the height of the leveling rotor 40 is adjusted by operating the lever 52, and then the leveling rotor 40 and the planting unit 24 are driven. While the lower part of the ground leveling rotor 40 enters the surface shallowly and descends so that the float 35 comes in contact with the ground, the leveling plate 61 projecting in a zigzag manner on the outer periphery of the drum leveling rotor 40 is provided. It is possible to satisfactorily level the surface layer of the cultivated soil, and the planting rods 31 of the planting unit 24 can scrape the mat seedlings of the seedling platform 30 one by one and plant them smoothly on the leveled field. it can.
[0030]
In this case, as shown in FIG. 7, for example if the Kyozatsubutsu A such as grass and straw was the point of entering between the leveling plate 61 ₁ and the leveling plate 61 _2, integer with the rotation of the leveling rotor 40 the main plate 61 ₂ us skip off the Kyozatsubutsu. However, when the foreign object B enters the end of the leveling rotor 40 in the axial direction, the foreign object B is wound around the rotor shaft 41 as it is. According to the present embodiment, in order to prevent the foreign object B from entering, as shown in FIG. 4, as shown in FIG. 4, the axial adjustment is performed at the axial end of the leveling rotor 40 and protrudes outward in the axial direction from the mounting plate 60. An anti-winding member 64 is provided on the inner side in the radial direction of the base plate 61. The wrapping preventing member 64 prevents grass and straw and other foreign objects from being wound around the rotor shaft 41, thereby improving the leveling performance and facilitating maintenance.
[0031]
【The invention's effect】
According to the first aspect of the present invention, the winding shaft is prevented from being wrapped around the mounting shaft on the radially inner side of the leveling plate that protrudes outward in the axial direction from the mounting plate at the axial end of the leveling rotor. Since the anti-winding member to be attached is attached, it is possible to prevent the foreign matter such as grass and straw from being wound around the attachment shaft, and to improve the leveling performance. That is, when a foreign object is wound around the mounting shaft, this gradually grows and may adversely affect the leveling performance. However, according to the present invention, the inconvenience can be avoided.
[0033]
Further, the anti-winding member is a ring-shaped member, and the ring-shaped member is attached to the mounting shaft with a connecting pin extending in a direction substantially orthogonal to the mounting shaft, and the connecting pin is attached in the attached state of the ring-shaped member. Since it exists in the ring, no foreign matter is wound around the connection pin, and there is no possibility that the connection pin will come off with the rotation of the leveling rotor, and the leveling performance can be maintained for a long time.
[Brief description of the drawings]
FIG. 1 is a side view of a riding rice transplanter as a transplanter according to the present invention.
FIG. 2 is a side view of a seedling stand and a planting case in a folded state.
FIG. 3 is a front view of a leveling device including a leveling rotor.
FIG. 4 is an enlarged front view of the leveling rotor.
5A is a cross-sectional view taken along the CC direction of FIG. 3, and FIG. 5B is a cross-sectional view taken along the DD direction of FIG. 3;
6 is a cross-sectional view taken along the EE direction in FIG. 3;
FIG. 7 is an enlarged front view of a state in which foreign objects have entered the leveling rotor.
[Explanation of symbols]
10 Passenger rice transplanter (Transplanter)
13 traveling machine body 24 planting part (transplanting device)
40 Rotor for leveling 41 Rotor shaft (mounting shaft)
60 Mounting plate 61 Leveling plate 64 Anti-winding member 64a Ring-shaped member 65 Connecting pin

Claims (1)

In the transplanting machine, which supports a transplanting device for transplanting seedlings in a farm field at the rear part of the traveling machine body, and in front of the transplanting apparatus, a leveling rotor for leveling the farm field is rotatably attached,
The leveling rotor has a mounting plate attached to a mounting shaft, and a plurality of leveling plates arranged at substantially equal intervals on the outer peripheral portion of the mounting plate,
An anti-winding member that prevents entanglement from being wound around the mounting shaft on the radially inner side of the leveling plate that protrudes outward in the axial direction from the mounting plate at the axial end of the leveling rotor. Install ,
The wrapping preventing member has a ring-shaped member that prevents a foreign object from entering from an axial end portion of the leveling plate , and the ring-shaped member is connected to extend in a direction substantially orthogonal to the mounting shaft. The pin is attached to the attachment shaft, and the connecting pin is urged by a spring so as to face the attachment shaft side, and the ring-shaped member is attached to the ring in the ring.
A leveling device for a transplanting machine.

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