JP2004065111A - Transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transplanter where the distance between a traveling unit and a planting section for the puddling simultaneous rice transplanter is set short. <P>SOLUTION: The transplanter as the puddling simultaneous rice transplanter has the following structure. The planting section 24 is supported liftably via a lift link mechanism 22 on the rear portion of the traveling unit 16 and a puddling device 44 located in front of the planting section 24 and behind a rear wheel 14 is supported liftably relatively to the planting section 24. Specifically, the paddling device 44 is located liftably as the planting section 24 moves vertically, and in response to the ascending movement of the planting section 24 to its non-working height, moves retreatedly along the outer diameter of the rear wheel 14 by the action of a working implement lift mechanism 64, thereby enabling the distance between the traveling unit 16 and the planting section 24 to be set short. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a transplanter such as a rice paddy rice transplanter or a non-tilling rice transplanter.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a simultaneous rice transplanter that simultaneously performs a scratching operation and a planting operation of a seedling is a planting device that implants a plurality of seedlings at the rear of a traveling body having a front wheel and a rear wheel by using a lifting link mechanism. A plurality of cage type rotors are mounted on a rotary shaft supported in front of the planting device and behind the rear wheel, and a scraping device (ground work machine) for scratching is mounted.
[0003]
By the way, the elevating link mechanism supporting the planting device is composed of parallel links, and in order to maintain the stability by moving the machine center of gravity forward even when the planting device is raised to the non-working height, In the parallel link, the fulcrum of the upper link is offset from the fulcrum of the lower link in front of the fuselage. For this reason, when the substitute scratching device moves up and down as the planting device moves up and down, the substitute scratching device may interfere with the rear wheel.
[0004]
In order to avoid this interference, it is necessary to provide a space between the substitute device and the rear wheel, and therefore, for example, it is necessary to arrange the substitute device at a position separated from the rear wheel.
[0005]
[Problems to be solved by the invention]
However, when the substitute device is disposed at a position separated from the rear wheel, there is a problem that the front-rear length of the machine is increased, and the installation space for the substitute device is increased, thereby increasing the size of the machine.
[0006]
The present invention has been made in order to solve such a problem, and an object of the present invention is to provide a transplanting machine that can set a short distance between a traveling body and a transplanting unit.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is directed to a seedling that is inclinedly arranged at a rear portion of a traveling body (16) supported by a front wheel (12) and a rear wheel (14) so that the rear portion is low. A transplanting part (24) for scraping the seedlings from the mounting table (30) and transplanting it to the field is supported via a lifting link mechanism (22) so as to be able to move up and down freely, and in front of and after the transplanting part (24). In a transplanter (10) in which a ground working machine (44) working in a space between the wheel (14) and the rear side is supported so as to be able to move up and down with respect to the transplant section (24).
The ground working machine (44) is arranged so as to be able to move up and down as the transplanting part (24) moves up and down, and the ground working machine (44) is moved based on the rising movement of the transplanting part (24) to the non-working height. ) Along with the outer diameter of the rear wheel (14).
[0008]
According to a second aspect of the present invention, in the transplanter according to the first aspect, the work machine elevating mechanism (64) has a support member (72) connected to the ground work machine (44), and the support member (72) is characterized in that it moves while being guided by a guide member (74) which is arranged obliquely so that the front is lower and the rear is higher in the body traveling direction.
[0009]
According to a third aspect of the present invention, in the transplanting machine according to the second aspect, the working machine elevating mechanism (64) is arranged on a lower surface side of the seedling mounting table (30).
[0010]
According to a fourth aspect of the present invention, in the transplanter according to the first aspect, the lifting link mechanism (22) is a parallel link, and a link (22a) above a fulcrum (27b) of a lower link (22b) of the parallel link. ) Is characterized in that the fulcrum (27a) is offset forward.
[0011]
[Action]
According to the present invention, the ground working machine (44) is arranged so as to be able to move up and down as the transplanting part (24) moves up and down, and the ground working machine (44) is moved up to the non-working height based on the ground moving machine. Since the working machine (44) is provided with a working machine elevating mechanism (64) for retracting and moving the working machine (44) along the outer diameter of the rear wheel (14), for example, in a state where the transplanting section (24) is lowered to the working height, When the lifting link mechanism (22) is raised from a state where the ground working machine (44) is adjusted to the working position or the non-working position, the transplant portion (24) is raised almost simultaneously with this, and the ground work is performed. The machine (44) also rises via a support member 72 connected to the ground work machine (44).
[0012]
At this time, when the transplanting portion (24) moves up, the portion (22c) extending rearward from the rear end of the lower link (22b) of the lifting link mechanism (22) moves to its lower fulcrum (27b). Due to pivoting upwards as a center, the extension (22c) rises faster than the implant (24). For this reason, the ground work machine (44) connected via the extended portion (22c) and the work machine elevating mechanism (64) is lifted faster than the transplant portion (24).
[0013]
As described above, the ground working machine (44) rises faster than the rising speed of the transplant portion (24), and the support member (72) supporting the ground working machine (44) includes the guide member (74). , And immediately retreats and ascends obliquely rearward of the fuselage, so that when the ground work machine (44) ascends, interference between the ground work machine (44) and the rear wheel (14) is avoided. .
[0014]
In addition, the code | symbol in parenthesis mentioned above is for referring to drawings, and does not limit this invention at all.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0016]
FIG. 1 is an overall side view of a simultaneous rice transplanter as a transplanter according to the present invention. This simultaneous rice transplanter 10 includes an engine 18 from the front and a driver's seat 20 having a steering wheel and a seat seat at the rear thereof on a traveling body 16 supported by the front wheels 12 and the rear wheels 14. The planting portion 24 is supported by a hydraulic cylinder (not shown) so as to be able to move up and down via a lifting link mechanism 22 having an upper link 22a and a lower link 22b.
[0017]
As shown in FIG. 2, a link holder 36 is pivotally mounted on a rear end portion of the lifting link mechanism 22 by a fulcrum shaft 25, and the planting portion 24 is formed by a rolling shaft 37 protruding rearward from the link holder 36. Rolling freely supported. In this planting section 24, a mat seedling is placed, and a seedling mount 30 which is inclined forward and backward so that the rear is lowered, and a large number of seedlings that are scraped from the seedling mount 30 and transplanted to a field. A planting case 38 having the planting rod 26, a transmission case 40 to which the planting case 38 is attached, a square tubular planting portion frame 42, and the like are integrally arranged. Power is supplied to the transmission case 40 from a planted PTO shaft (not shown), and a float 28 having a sliding function is provided below the transmission case 40. An auxiliary seedling mounting table 32 is provided on the left and right sides of the hood at the front of the fuselage.
[0018]
As shown in FIG. 1 and FIG. 2, the scraping device 44 as a ground working machine includes a plurality of cage type rotors 48 arranged in a space in front of the planting portion 24 and behind the rear wheel 14. At the predetermined intervals, the cage-shaped rotor 48 scrapes the planting surface of the field, and the seedlings are planted by the planting rod 26 in the field that has been smoothly scraped. The cage rotor 48 is supported by a rotary shaft 46 that is provided in front of each float 28 in the lateral direction of the fuselage, and power is supplied to the rotary shaft 46 from a substitute transmission shaft 50 via a universal joint 52. Have been. The upper part of the cage type rotor 48 is covered with a rotor cover 54.
[0019]
In the present embodiment, the ground working machine 44 is disposed so as to be able to move up and down as the transplanting section 24 moves up and down, and the ground working machine 44 is moved to the rear wheel based on the rising movement of the transplanting section 24 to the non-working height. The work machine lifting / lowering mechanism 64 for retracting and moving along the outer diameter of the work machine 14 is provided.
[0020]
The work machine raising / lowering mechanism 64 moves the scraping device 44 up and down with respect to the planting unit 24 as the planting unit 24 moves up and down, and includes an interlocking arm 62 and a connecting link 60. That is, as shown in FIG. 2 and FIGS. 3A and 3B, an extension link 22c is integrally formed with the lower link 22b at the rear portion of one of the left and right lower links 22b (the left side in FIG. 2). An interlocking arm 62 is pivotally attached to the rear end of the extension link 22c by a connecting pin 63 so as to be rotatable. The interlocking arm 62 has an elongated hole 62a.
[0021]
On the other hand, planting machine frames 34, 34 integrally fixed to the planting section frame 42 are erected on the left and right end sides of the planting section frame 42 extending in the lateral direction of the machine body. The sleeve shaft 56 is fixed to the planting machine frame 34 by bolts 57. A horizontal shaft 58 is rotatably supported on the sleeve shaft 56 substantially in parallel with the planting section frame 42. A connecting link 60 is integrally attached to a halfway portion of the horizontal shaft 58 in the longitudinal direction, and an engaging pin 59 is implanted in the connecting link 60. The engagement pin 59 is engaged with the above-described elongated hole 62a of the interlocking arm 62, and as the interlocking arm 62 is raised, the engagement pin 59 is brought into contact with the lower end of the elongated hole 62a and rises. , The horizontal shaft 58 rotates.
[0022]
Further, a link arm 66 is integrally fixed to the longitudinal end of the horizontal shaft 58, and a link lever 68 is rotatably mounted on the link arm 66 via a pin 67. ing. A support rod 72 is connected to the link lever 68 via a joint 70, a roller 71 is attached to a lower end of the support rod 72, and the scratching device 44 is mounted via the roller 71. The support rod 72 is slidably disposed on a guide member 74 that is inclined so that the front is lower and the rear is higher in the body traveling direction. A front and rear stay 73 extending forward and rearward of the machine body is fixed integrally to the guide member 74, and the front and rear stay 73 is fixed to an upper portion of the planting section frame 42.
[0023]
In this way, the support rod 72 guided by the guide member 74 moves upward while being inclined such that the front is lower and the rear is higher. As a result, the scratching device 44 supported by the support rod 72 moves from the front of the machine to the rear. Therefore, the scraping device 44 retreats along substantially the outer diameter of the rear wheel 14 without interfering with the rear wheel 14.
[0024]
In addition, the rear part of the substitute drive shaft 50 that transmits power to the substitute device 44 is supported by a connecting arm 53 that is mounted on the lower link 22b so as to be able to move up and down.
[0025]
As described above, when the planting unit 24 moves up and down, the scraping device 44 moves up and down with respect to the planting unit 24, and the planting unit 24 moves up and down to a predetermined non-working height. The scraping device 44 retreats upward along the outer diameter of the rear wheel 14 so as not to interfere with the rear wheel 14.
[0026]
As described above, the connecting link 60 and the link arm 66 are integrally connected by the horizontal shaft 58. When the connecting link 60 rotates, the horizontal shaft 58 rotates integrally with the connecting link 60. The rotation of causes the scraping device 44 to move up and down.
[0027]
Then, as shown in FIGS. 4A and 4B, when the planting section 24 is moved up to a predetermined non-work height by the lifting link mechanism 22, the lower link 22b is moved from the state shown in FIG. As shown in FIG. 4A, the link arm 62 is inclined upward by a predetermined angle. At this time, the interlocking arm 62 connected to the rear end of the extension link 22c rises relatively large with respect to the planting portion 24. 3 (b), the gap s between the lower end surface of the long hole 62a and the stop position of the engagement pin 59 becomes zero, and the interlocking arm 62 further moves up to lift the engagement pin 59. Then, the horizontal shaft 58 rotates clockwise in the drawing via the connecting link 60, and the scraping device 44 rises via the link arm 66 and the support rod 72.
[0028]
As shown in FIG. 3A, the power of the engine 18 is transmitted to a drive case 88 via a traveling transmission shaft 86, and further transmitted from a rear axle case 88 integrated with the drive case 88 to the rear wheels 14. And power is transmitted from the drive case 88 to the scraping device 44 via the joint 90, the scraping transmission shaft 50, and the joint 52. The turning on and off of the power to the scratching device 44 is performed by a scratching operation lever 92.
[0029]
Meanwhile, as shown in FIG. 3A, the lifting link mechanism 22 is configured by a parallel link, and the fulcrum 27a of the upper link 22a on the starting end side of the parallel link is offset forward of the fulcrum 27b of the lower link 22b. are doing.
[0030]
For this reason, when the planting portion 24 is raised, the machine center of gravity moves forward to improve the stability, but when the raising device 44 is raised almost simultaneously with the raising of the planting portion 24, The scraper 44 may interfere with the rear wheel 14. However, as in the present embodiment, the planting unit 24 starts to rise and the planting unit 24 is moved up faster than the planted unit 24 is moved up. Thus, interference between the substitute device 44 and the rear wheel 14 due to the vertical movement of the planting section 24 can be prevented.
[0031]
Further, the support rod 72 is guided by the guide member 74 which is inclined so that the front is low and the rear is high, and moves upward so as to retreat from the rear wheel 14. There is no risk of interference.
[0032]
Further, in the present embodiment, the working machine lifting / lowering mechanism 64 is arranged on the lower surface side of the seedling mounting table 30, thereby achieving a compact design of the simultaneous rice transplanter 10.
[0033]
That is, by using the empty space on the lower surface side of the seedling mounting table 30 that is inclined so that the front is high and the rear is low, the work machine elevating mechanism 64 is arranged in this empty space. By preventing the mechanism 64 from protruding in the front-rear direction or the left-right direction, the entire body can be designed to be compact.
[0034]
Next, the working position of the aforementioned scratching device 44 can be adjusted up and down by the up and down adjustment mechanism 76. That is, in FIGS. 3A and 3B, the vertical adjustment mechanism 76 has a work position regulating link 78 and an operation lever 80 fixed integrally with the work position regulating link 78. The long hole 78a with which the above-mentioned engagement pin 59 engages is formed. Then, as the planting section 24 descends, the substitute device 44 descends by its own weight, and the engaging pin 59 abuts on the lower end of the elongated hole 78a, whereby the working position of the substitute device 44 is regulated. . The work position regulating link 78 is turned around the horizontal shaft 58 by turning the operation lever 80.
[0035]
The operating lever 80 has its lever locking piece 80a locked in a lever locking groove 84 formed in a lever guide 82 to position the scraper 44 in a working position or a non-working position (FIGS. 2, FIG. 3 (a), see FIG. 6 (a)).
[0036]
Next, the operation will be briefly described.
[0037]
As shown in FIG. 3A, in a state where the planting section 24 is lowered to the working height and the substitute device 44 is adjusted to the working position by operating the operation lever 80, the machine body travels. In the planting section 24, the planting rod 26 scrapes the seedlings from the seedling mounting table 30 and transplants the seedlings to the field while leveling the field scene with the substitute scraping device 44.
[0038]
In this state, when the lifting link mechanism 22 is raised, the planting section frame 42 is raised via the rolling shaft 37 projecting rearward from the rear of the body from the rear of the link holder 36 at the rear of the lifting link mechanism 22, and the planting section is raised. As the part 24 rises, the scraper 44 also rises via the planting machine frame 34, the horizontal shaft 58, and the support rod 72 integrated with the planting part frame 42. At this time, when the planting portion 24 is lifted, the rear end of the extension link 22c at the rear of the lower link 22b is moved relative to the planting portion 24 around the lower fulcrum 27b of the lower link 22b. Rise faster than.
[0039]
Therefore, the gap s between the lower end of the elongated hole 62a of the interlocking arm 62 and the engaging pin 59 shown in FIG. The lower end of 62 a raises the engagement pin 59, and the engagement pin 59 rises along the elongated hole 78 a while rotating about the horizontal shaft 58. When the horizontal shaft 58 rotates, the scraping device 44 is lifted via the link arm 66 and the support rod 72. At this time, as shown in FIG. 4B, the engagement pin 59 is held in a state of being in contact with the lower end of the long hole 62a.
[0040]
In this way, the scraping device 44 rises faster than the planting section 24 rises, and the support rod 72 that supports the scraping device 44 is guided by the guide member 74 and quickly moves diagonally rearward. As the planting section 24 moves upward, the scraping device 44 is prevented from interfering with the rear wheel 14 when the planting section 24 is raised.
[0041]
In a state where the planting portion 24 has risen to the non-working height, the connection between the working machine elevating mechanism 64 and the vertical adjusting mechanism 76 is released, and the weight of the scraping device 44 is supported by the engaging pin 59, The engagement pin 59 is supported at the lower end of the long hole 62a. For this reason, no force acts on the work position regulating link 78, and the work position regulating link 78 can be easily rotated by the operation lever 80.
[0042]
Therefore, for example, in a state where the planting portion 24 has risen to the non-working height, as shown in FIGS. 5A and 5B, the operation lever 80 is raised and the work position regulating link 78 is moved in the direction of arrow A. Suppose you operate.
[0043]
In this state, as shown in FIGS. 6A and 6B, assuming that the planting section 24 is lowered to the working height by lowering the elevating link mechanism 22, the planting section 24 is lowered. As the scraping device 44 moves down, the interlocking arm 62 moves down with respect to the planting section 24. At this time, the planting section 24 is lowered to the working height, but the scraping device 44 is held at the position raised to the non-working position. In this case, the working machine elevating mechanism 64 and the up-and-down adjusting mechanism 76 are linked, and in this state, the position of the scratching device 44 can be adjusted by the operation lever 80. In order to operate to the (raised position), it is necessary to operate the operation lever 80 against the weight of the scraping device 44.
[0044]
【The invention's effect】
As described above, according to the first aspect of the present invention, there is provided a working machine lifting mechanism for retracting and moving a ground working machine along an outer diameter of a rear wheel based on a rising movement of a transplant portion to a non-working height. With the provision, the distance between the traveling body and the transplant portion can be set short.
[0045]
According to the second aspect of the present invention, the support member connected to the ground work machine is guided by the guide member which is arranged obliquely so that the front is low and the rear is high, so that the ground work machine is raised. When doing so, the ground work machine can be retracted and moved along the outer diameter of the rear wheel.
[0046]
According to the third aspect of the present invention, the work machine elevating mechanism is arranged on the lower surface side of the seedling mounting table, so that the entire transplanting machine can be designed compact.
[0047]
According to the fourth aspect of the present invention, since the fulcrum of the upper link is offset forward of the fuselage from the fulcrum of the lower link of the parallel link, when the transplant portion is raised, the body weight center moves forward and is stable. On the other hand, when the ground work machine is raised, the ground work machine may interfere with the rear wheel.However, by using the work machine elevating mechanism, the ground work machine Interference can be prevented.
[Brief description of the drawings]
FIG. 1 is a side view of a simultaneous rice transplanter as a transplanter according to the present invention.
FIG. 2 is a front view showing a support structure of the substitute device.
3 (a) is a side view of the simultaneous rice transplanter when the planting unit is lowered and the substitute device is adjusted to a working position (lower position), and FIG. 3 (b) is a work machine lifting mechanism FIG.
FIG. 4A is a side view of the simultaneous scraping rice transplanter when the planting section is raised and the scraping device is adjusted to a working position (down position), and FIG. 4B is a working machine lifting mechanism. FIG.
5 (a) is a side view of the simultaneous rice transplanter when the planting section is raised and the substitute device is adjusted to a non-working position (raising position), and FIG. It is a side view of a mechanism.
FIG. 6 (a) is a side view of the simultaneous rice-slicing rice transplanter when the planting unit is lowered and the substitute device is adjusted to a non-working position (elevated position); It is a side view of a mechanism.
[Explanation of symbols]
Rice planting machine for 10 generations (transplanter)
12 Front wheel 14 Rear wheel 16 Running body 22 Elevating link mechanism 22a Upper link 22b Lower link 22c Extension link 24 Planting part 27a Upper fulcrum 27b Lower fulcrum 30 Seedling platform 44 Substitution device (ground work machine)
58 Horizontal shaft 59 Engagement pin 60 Connecting link 62 Interlocking arm 62a Slot 64 Work implement elevating mechanism 76 Vertical adjustment mechanism 80 Operating lever

Claims (4)

At the rear of the traveling body supported by the front and rear wheels, the transplanting section that scrapes the seedlings from the seedling mounting table that is inclined so that the rear is lowered and transplants them to the field can be raised and lowered via the lifting link mechanism In addition to the above, the ground working machine that works in the space between the front of the transplant portion and the rear of the rear wheel is supported on the transplant portion so as to be able to move up and down with respect to the transplant portion,
The ground working machine is arranged so as to be able to move up and down as the transplanting part moves up and down, and the ground working machine is retracted along the outer diameter of the rear wheel based on the moving movement of the transplanting part to the non-working height. Equipped with a work machine lifting mechanism to move,
A transplanter characterized by that: The work machine elevating mechanism has a support member connected to the ground work machine, and the support member is guided and moved by a guide member that is arranged obliquely so that the front is lower and the rear is higher in the body traveling direction. Do
The transplanter according to claim 1, wherein The work machine elevating mechanism is arranged on the lower surface side of the seedling mounting table,
3. The transplanter according to claim 2, wherein: The lifting link mechanism is a parallel link, and the fulcrum of the upper link is offset forward from the fulcrum of the lower link of the parallel link.
The transplanter according to claim 1, wherein

Images