JP2004065112A - Transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transplanter so designed that the working position of a puddling device can easily be regulated by ensuring the dead weight of the puddling device to be put to inaction at a position where a planting section is ascended to its non-working height. <P>SOLUTION: This transplanter as a puddling simultaneous rice transplanter 10 includes a working implement lift mechanism 64 functioning to vertically move the puddling device 44 as the planting section 24 ascends and a mechanism 76 for vertically regulating the working position of the puddling device 44. The transplanter works as follows. At a position where the planting section 24 is ascended to its non-working height, the mechanisms 64 and 76 are unjoined from each other, enabling the working position of the puddling device 44 to be regulated by operating the mechanism 76, whereas at a position where the planting section 24 is descended to its working height, the mechanisms 64 and 76 are joined to each other, setting the puddling device 44 at its working position regulated by the mechanism 76 at a position where the planting section 24 is ascended. <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]
On the other hand, even if the planting device is lowered to the working height, the scratching device is not always used integrally with the planting device. It is also necessary to be able to adjust the position.
[0006]
[Problems to be solved by the invention]
As described above, 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 body is increased, and the installation space for the substitute device is also increased, thereby increasing the size of the machine body. On the other hand, it would be convenient if the scraper could be easily and independently adjusted to a working or non-working position.
[0007]
The present invention has been made in order to solve such a problem, and an object of the present invention is to provide a state in which the self-weight of the ground work machine does not act at the position where the transplantation part has risen to the non-working height, thereby facilitating easy operation. Another object of the present invention is to provide a transplanter capable of adjusting a working position of a ground working machine.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is a transplanting part (24) for transplanting seedlings in a field at a rear part of a traveling body (16) supported by a front wheel (12) and a rear wheel (14). A ground work machine (44) that works in a space between the transplant portion (24) and the back of the rear wheel (14), while supporting the device vertically through a lifting link mechanism (22). ) Is supported on the transplanting section (24) so as to be movable up and down.
A work implement lifting mechanism (64) that moves the ground work machine (44) up and down as the transplanting section (24) moves up and down, and a vertical adjustment mechanism (76) that adjusts the work position of the ground work machine (44) up and down ) And
At the position where the transplanting part (24) has risen to the non-working height, the work machine elevating mechanism (64) is disconnected from the vertical adjusting mechanism (76) by the vertical adjusting mechanism (76). The work position of the ground work machine (44) is adjustable,
At the position where the transplanting part (24) is lowered to the working height, the working machine elevating mechanism (64) and the vertical adjusting mechanism (76) are connected to each other, and the ground working machine (44) is moved to the vertical adjusting mechanism. The work position is set based on (76).
[0009]
According to a second aspect of the present invention, in the transplanting machine according to the first aspect, the work machine elevating mechanism (64) has a first elongated hole (62a), and the transplanting unit (24) moves up as the transplanting part (24) rises. An interlocking member (62) rising with respect to the portion (24);
A pin member (59) engaged with the first slot (62a) and connected to the ground work machine (44), the pin member (59) being connected to the first slot (62a); ) Abutting against a lower end of the ground work machine (44) and lifting the ground work machine (44) to a working height.
The vertical adjustment mechanism (76) has a second elongated hole (78a) with which the pin member (59) is engaged, and the ground work machine (44) is weighed down by the lowering of the transplant portion (24). And the pin member (59) is brought down into contact with the lower end of the second long hole (78a), and a work position regulating member (78) for regulating a work position of the ground work machine (44).
And a vertical operation tool (80) for moving and operating the work position regulating member (78).
[0010]
[Action]
According to the present invention, the ground working machine (44) moves up and down as the transplanting section (24) moves up and down. However, at the position where the transplanting section (24) has risen to the non-working height, the working machine lifting mechanism (64) The connection between the and the vertical adjustment mechanism (76) is released, and the working position of the ground work machine (44) can be adjusted by the vertical adjustment mechanism (76) with a small force. Further, at the position where the transplanting part (24) is lowered to the working height, the working machine elevating mechanism (64) and the up-and-down adjusting mechanism (76) are linked, and the ground working machine (44) The working position of the ground work machine (44) adjusted by the vertical adjusting mechanism (76) is set at the position where the transplanting part (24) is raised to the non-working height.
[0011]
In addition, the code | symbol in parenthesis mentioned above is for referring to drawings, and does not limit this invention at all.
[0012]
BEST MODE FOR CARRYING OUT 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 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.
[0014]
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.
[0015]
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.
[0016]
In the present embodiment, a work implement lifting mechanism 64 that moves the ground work machine 44 up and down as the transplant unit 24 moves up and down, and a vertical adjustment mechanism 76 that vertically adjusts the work position of the ground work machine 44 are provided.
[0017]
The work machine raising / lowering mechanism 64 moves the scraping device 44 up and down with respect to the planting section 24 in accordance with the vertical movement of the planting section 24, and has an interlocking member 62 and a connection 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 a long hole (first long hole) 62a. The vertical adjustment mechanism 76 will be described later.
[0018]
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.
[0019]
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 is integrally fixed to the guide member 74, and the front and rear stay 73 is fixed to an upper portion of the planting section frame 42.
[0020]
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.
[0021]
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.
[0022]
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.
[0023]
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.
[0024]
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 engagement pin 59 is lifted by further moving upward. 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.
[0025]
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.
[0026]
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.
[0027]
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.
[0028]
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. Interference is avoided.
[0029]
In the present embodiment, a compact design of the entire machine is achieved by utilizing the empty space on the lower surface side of the seedling mounting table 30 and arranging the work implement elevating mechanism 64 in this empty space.
[0030]
Next, the working position of the above-described scratching device 44 can be adjusted up and down by the above-described up-and-down adjusting mechanism 76. That is, in FIGS. 3A and 3B, the up / down adjustment mechanism 76 includes a work position regulating link 78 and an operation lever 80 (up / down operation tool) integrally fixed to the work position regulating link 78. The position regulating link 78 has a long hole (a second long hole) 78a with which the above-mentioned engaging pin 59 is engaged.
[0031]
Then, as shown in FIGS. 4 and 5, at the position where the planting section 24 has risen to the non-working height, the vertical movement of the work implement lifting mechanism 64 and the vertical adjustment mechanism 76 is released. The working position of the scratching device 44 by the mechanism 76 can be adjusted, and as shown in FIGS. 3 and 6, when the planting section 24 is lowered to the working height, the work implement elevating mechanism 64 and the vertical adjusting mechanism 76, the scraping device 44 is set to the working position adjusted based on the vertical adjustment mechanism 76.
[0032]
That is, for example, in FIGS. 4 (a) and 4 (b), when the planting portion 24 rises to the non-working height, the interlocking arm 62 rises and the lower end surface of the long hole 62a raises the engagement pin 59, and the connection is established. The scraping device 44 rises via the link 60, the horizontal shaft 58, the link arm 66, and the support rod 72. 4 (a) and 4 (b), in which the planting section 24 has risen to the predetermined non-working height, the weight of the scraping device 44 is borne by the lower end surface of the long hole 62a via the engaging pin 59. Therefore, the connection between the work implement lifting mechanism 64 and the vertical adjustment mechanism 76 is released, and the operation lever 80 and the work position regulating link 78 integrated therewith can be operated with a small force.
[0033]
The work position restricting link 78 rotates about the horizontal shaft 58 integrally with the operation lever 80 by rotating the operation lever 80. Therefore, in this state, the operation position of the scratching device 44 is changed from the operation position (down position) of FIGS. 4A and 4B by operating the operation lever 80 with a small force. Can be adjusted to the non-working position (raising position).
[0034]
Next, from the state where the planting section 24 has risen to the non-working height (see FIGS. 4A and 4B), for example, as shown in FIGS. When the planting portion 24 is lowered, the scraping device 44 is lowered by its own weight as the planting portion 24 is lowered, and the engaging pin 59 is brought into contact with the lower end of the elongated hole 78a of the working position regulating link 78 (FIG. 3 (b)), whereby the working position of the scraping device 44 is regulated. That is, in this case, the work implement lifting / lowering mechanism 64 and the up / down adjustment mechanism 76 are linked, and the scraping device 44 is set to the work position (down position) adjusted based on the up / down adjustment mechanism 76.
[0035]
At this time, the work implement elevating mechanism 64 and the up-and-down adjusting mechanism 76 are connected with each other. In this state, as shown in FIGS. It is necessary to operate the operation lever 80 against the weight of the scraping device 44.
[0036]
As shown in FIG. 2, the operation lever 80 has a lever locking piece 80 a locked in a lever locking groove 84 formed in a lever guide 82, and moves the scratching device 44 according to its operation position. It is positioned at a working position (lower position) or a non-working position (up position) (see FIGS. 3A and 6A).
[0037]
Next, the operation will be briefly described.
[0038]
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.
[0039]
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.
[0040]
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.
[0041]
In this way, the scraping device 44 ascends faster than the planting section 24 ascends, and the support rod 72 that supports the scraping device 44 is guided by the guide member 74 and immediately retreats obliquely rearward. Since it moves and rises, it is avoided that the substitute device 44 and the rear wheel 14 interfere with each other when the planting section 24 rises.
[0042]
In addition, in a state where the planting portion 24 has risen to the non-working height, as shown in FIGS. 4A and 4B, the connection between the working machine lifting / lowering mechanism 64 and the vertical adjustment mechanism 76 is released, The own weight of the scraping device 44 is supported by an engagement pin 59, and the engagement pin 59 is supported by the lower end of the elongated hole 62a. In this state, the working position regulating link 78 does not have its own weight of the scraping device 44, so that the working position regulating link 78 can be easily rotated by the operation lever 80 with a small force.
[0043]
Therefore, for example, as shown in FIGS. 4A and 4B, the planting section 24 rises to the non-working height, and the lowering device 44 is moved to the working position (lower position) by the lowering operation of the operation lever 80. From the adjusted state, as shown in FIGS. 5 (a) and 5 (b), the operating lever 80 is raised to operate the work position regulating link 78 in the direction of arrow A, and the scraping device 44 is turned off. Assume that the user has adjusted to the working position (up position). At this time, the weight of the substitute device 44 is borne by the lower end of the elongated hole 62a via the engagement pin 59, so that the operation lever 80 can be raised and operated with a small force.
[0044]
As shown in FIGS. 5 (a) and 5 (b), the lifting link mechanism 22 is lowered as shown in FIGS. When the planting section 24 is lowered to the working height, the scraping device 44 moves down as the planting section 24 moves down, and 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 non-working position (up position). In this case, the work implement elevating mechanism 64 and the up-and-down adjusting mechanism 76 are connected to each other. When the operating lever 80 is operated to be lowered in this state, the lowering operation can be performed with a smaller force due to the own weight of the substitute device 44. For example, in order to operate the scratching device 44 from the lowered position to the raised position, it is necessary to operate the operation lever 80 against the weight of the scratching device 44.
[0045]
【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 moving the ground working machine up and down as the transplanting unit moves up and down, and a vertical adjusting mechanism for vertically adjusting the working position of the ground working machine. Since the weight of the ground working machine does not act on the vertical adjustment mechanism at the position where the transplanting part has risen to the non-working height, the working position of the ground working machine can be easily adjusted.
[0046]
According to the invention as set forth in claim 2, the working machine elevating mechanism includes an interlocking member that rises with respect to the transplanting section as the transplanting section rises, and a connection link that raises the ground working machine to a working height; The vertical adjustment mechanism has a work position regulating member that regulates the work position of the ground work machine and an up and down operation tool that moves the work unit. It is possible to reduce the operation force of the vertical adjustment mechanism at the set position.
[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 Traveling body 22 Elevating link mechanism 22a Upper link 22b Lower link 22c Extension link 24 Planting part (transplant part)
27a Upper fulcrum 27b Lower fulcrum 30 Seedling platform 44 Substitution device (ground work machine)
58 Horizontal shaft 59 Engagement pin (pin member)
60 connecting link 62 interlocking arm (interlocking member)
62a long hole (first long hole)
64 Work implement elevating mechanism 76 Vertical adjustment mechanism 78 Work position regulating link (work position regulating member)
78a long hole (second long hole)
80 Operation lever (up and down operation tool)

Claims (2)

At the rear of the traveling body supported by the front wheels and the rear wheels, a transplanting part for transplanting seedlings to the field is supported via a lifting link mechanism so as to be able to move up and down freely, and in front of the transplanting part and behind the rear wheel. In a transplanter that supports a ground working machine that works in a space between the up and down with respect to the transplantation section,
A work machine elevating mechanism that moves the ground working machine up and down with the moving up and down of the transplanting section, and a vertical adjusting mechanism that vertically adjusts a working position of the ground working machine,
At the position where the transplanting part is raised to the non-working height, in a state where the connection between the working machine elevating mechanism and the vertical adjusting mechanism is released, the working position of the ground working machine by the vertical adjusting mechanism can be adjusted,
At the position where the transplanting part is lowered to the working height, the working machine elevating mechanism and the vertical adjusting mechanism are connected to each other, and the ground working machine is set to a working position based on the vertical adjusting mechanism.
A transplanter characterized by that: An interlocking member that has a first elongated hole and that moves up with respect to the transplant unit as the transplant unit rises,
A pin member engaged with the first elongated hole and connected to the ground work machine, wherein the pin member comes into contact with a lower end portion of the first elongated hole and rises to raise the ground work machine And a connecting link that lifts the
The up-and-down adjustment mechanism has a second long hole with which the pin member is engaged, and the ground working machine descends by its own weight as the transplanting part descends, so that the pin member is moved into the second long hole. A work position restricting member that is in contact with a lower end portion and regulates a work position of the ground working machine;
Up and down operating tool for moving the work position regulating member,
The transplanter according to claim 1, wherein

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