JP2000000003A - Ground working machine-lifting and lowering structure in transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a ground working machine-lifting and lowering structure in a no-till transplanter capable of vertically moving a ground working machine stably along guides placed on the planting apparatus between the rear wheels and a planting apparatus of a mobile machine body. SOLUTION: This transplanter supports, in a vertically movable state, a transplanting apparatus 6 for seedlings of plural rows by means of a lifting and lowering mechanism 3 at a rear part of a mobile machine body 1, which has front wheels 1a and rear wheels 1b. The ground working machine 5 is mounted in a vertically adjustable state along guides 75 placed on the transplanting apparatus 6. Preferably, the guides 75 are placed in a backward tilted state, and the ground working machine 5 is moved vertically.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lifting and lowering structure of a ground working machine in a transplanting machine such as a paddy rice transplanter or a non-tilling rice transplanter.

[0002]

2. Description of the Related Art Conventionally, a simultaneous paddy rice transplanter that simultaneously performs a scraping operation and a planting operation of a seedling is a planting device that implants a plurality of seedlings at a rear portion of a traveling body having a front wheel and a rear wheel. A scraping device that supports through a hydraulic lifting link type lifting mechanism and has a plurality of rotors on a rotary shaft that is supported below the seedling mounting table in front of the planting device, and performs a scratching as a ground work machine. Is configured.

[0003] In this substitute device, the rotary shaft is pivotally supported by a pivoting arm rotatably supported forward from the planting machine frame of the planting device. The height of the scraping centered on the shaft is supported so that it can be adjusted up and down.

[0004]

However, in the simultaneous paddy rice transplanter having the above-described conventional configuration, the substitute scraping device is pivotally supported by a rotating arm that rotates around a support shaft on the planting machine frame side. Therefore, when adjusting the scratching height of the scratching device, it draws an arc-shaped elevating trajectory and approaches the rear wheel of the traveling body, so to avoid interference between the rear wheel and the scratching device, It is necessary to install the separation scratching device at a position separated from the rear wheel.

[0005] Therefore, in order to avoid contact between the rear wheel and the scraping device, the traveling body and the planting device cannot be brought close to each other, so that the length of the body becomes longer. There is a problem that the installation space of the apparatus becomes large and the body becomes large. In addition, even if such a simultaneous rice transplanter is operated by operating the operating lever and raising the substitute device to the highest position, the substitute device cannot be largely separated from the ground. When performing a planting operation or the like that does not perform the above, there is a problem that the substitute device cannot be in a sufficient storage posture.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the conventional apparatus, a lifting and lowering structure for a ground working machine of a transplanter according to the present invention is provided with a plurality of rear parts of a traveling body 1 having a front wheel 1a and a rear wheel 1b. In a transplanter, which supports a planting device 6 for planting the seedlings of the streak via a lifting mechanism 3 so as to be able to ascend and descend, and supports a ground working machine 5 at a front side of the planting device 6 so as to be able to ascend and descend
The ground working machine 5 is provided so as to be vertically adjustable along a guide 75 provided on the planting device 6.

Further, the ground work machine 5 is moved up and down while approaching the rear wheel 1b by providing the guide 75 in a rearward inclined shape. Further, a guide 75 extends forward from the planting device 6, and the upper part of the support rod 70 that supports the ground work machine 5 is supported by the planting support frame 60 and the guide 75 guides the support rod 70 up and down. It is configured to be.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG.
A simultaneous rice transplanter, which is an example of a simultaneous transplanting machine shown as a riding type transplanter A, has an engine E mounted on a traveling body 1 supported by a front wheel 1a and a rear wheel 1b from the front, and a rear portion thereof. A driver's seat 2 comprising a steering wheel and a seat,
At the end of the top link and the lower link constituting the elevating mechanism 3 which is installed at the rear of the body 1 so as to be able to ascend and descend by a hydraulic cylinder mechanism for automatic control of the planting depth, a scraping device 5 as a ground work machine is provided. The planting machine frame (supporting frame) 60 of the planting device 6 is connected, and the scraping device 5 and the planting device 6 are moved up and down through the lifting mechanism 3 by operating the lifting lever 20 provided on the driver's seat 2. It is configured to be possible.

As shown in FIGS. 2A and 4, the planting device 6 has the same construction as that of the conventional device.
0, a transmission case (planting transmission case) 63 in which a planting section (planting case) 62 having a planting claw 62a for five-row planting is arranged, and a square tubular planting horizontal machine. A frame (lateral support frame) 65 is integrally mounted. In the transmission case 63, a transmission shaft 63a for transmitting to each planting portion 62 is supported, and this transmission shaft 63a is an appropriate number of drive shafts (PTO shafts) 11 provided on the drive case 10 on the traveling body 1 side. Power is transmitted by a planted transmission shaft 12 having a universal joint 12a (FIG. 4) through a bevel gear or the like provided in a transmission case 63, and the drive is performed by inputting.

A plurality of floats 6F having a function of a leveling plate and a sliding function are provided below the transmission case 63 so as to be vertically movable via front and rear support links 6a and 6b.

The scraping device 5 shown as an embodiment of the ground working machine is provided with a metal part 50a of a support mechanism 7, which will be described later, on both sides of a rotary shaft 50 which is provided in front of each float 6F across the planting width. Rotatable and planting device 6
In addition to supporting the unit so as to be able to integrally move up and down in conjunction with the ascending and descending operation of the motor, the central portion of the rotary shaft 50 is taken out of the drive case 10 by a take-out shaft of a detachable power take-out mechanism 8 described later. The transmission is carried out via 80 so that the rotational speed can be changed.

As shown in FIG. 4, the scraping device 5 includes cage-shaped rotors 5a to 5e having different lengths.
K is fixed. Then, by the respective mounting intervals 5K between the rotors, the muddy water flow generated by the forward rotation of the rotors 5a to 5e at the time of scratching is smoothly and quickly released to the rear to suppress the forward pushing of the muddy water flow by the scratching device 5. I can do it. The metal portion 50a is arranged within the mounting interval 5K on both outer sides, and the mounting interval 5K at the center is set.
A transmission case 51 (FIG. 4) in which the take-out shaft 80 (FIG. 2A) is internally transmitted through a substitute transmission shaft 81 and a universal joint 82.
Is installed to transmit and support the rotary shaft 50.

The rotors 5a to 5e thus arranged
Is a planting claw 62a of each planting portion 62 arranged rearward.
In front of the plant, the planted portion is properly scraped, so that the seedling can be satisfactorily planted in the flatly scraped field by the planting claws 62a.

Reference numeral 52 shown in FIG. 3 and FIG.
5e is a rotor cover provided so as to cover the upper side and the side in a series to prevent splashing of muddy water. The rotor cover is divided into right and left lower support rods 70a, which will be described later, and is fixed to the left and right support rods 70a. The planting transmission shaft 12 of the planting device 6 extends to an upper position corresponding to the unattached mounting interval 5K.

Next, a power take-off mechanism 8 for transmitting the scraping device 5 from the traveling machine body 1 will be described with reference to FIG. The power take-out mechanism 8 according to this embodiment includes an input shaft 11 extending rearward from the engine E side, and is integrated with an axle drive case 10a that supports and transmits a rear wheel 1b.
And a take-out case (power take-out case) 86 and the like, which is provided at the lower portion of the drive case 10 and is detachably mounted therein and has a not-shown speed change mechanism therein, and has a switching lever (speed change lever) 8L. .

That is, when the take-out case 86 is detached from the drive case 10, the power take-out mechanism 8 sets the open opening of the drive case 10 to a separately prepared flat cover (not shown) with a bolt. By fixing with the 8N, it is possible to configure a standard type riding implanter without the scratching device 5 attached.

On the other hand, when the work machine A with the scraping device 5 is configured, the take-out case 86 is input to the opened opening while the cover is removed using the traveling machine body 1. The transmission gear mounted on the shaft 11 and the driven gear (speed-change gear) mounted on the take-out shaft 80 are joined while meshing with each other, and the drive case 10 and the take-out case 86 are fastened with bolts 8N.

When the power take-out mechanism 8 is mounted, the power of the scraping device 5 is turned on and off from the drive case 10.
Alternatively, a shift lever 8L for a shift operation for performing a rotational shift is
As shown in FIGS. 2 (B) and 3, by projecting upward through a notch 22 formed in the rear cover 21,
The switching lever 8L is moved closer to the driver's seat 2 to facilitate the switching operation.

A take-out case 86 is provided at a lower portion of the drive case 10 installed at a substantially central portion of the body between the left and right rear wheels 1b.
Is fixed in a directly attached state, so that the standard traveling machine body 1 can be easily changed to the transplanting machine A equipped with the scratching device 5 by post-installation work. A rear cover 21 shown in the present embodiment integrally covers the upper portion of the rear wheel 1b from both sides of the seat, and has a step surface 21a for placing a foot on a portion covering the upper portion of the rear wheel 1b. The notch 22 is provided by forming the rear side of the rear cover 21 into a recess between the left and right step surfaces 21a.

The switching lever 8L passes between the top link 30 and the lower link 31 of the elevating mechanism 3 so that the grip portion approaches the right inside of the notch 22 and projects above the rear cover 21. The operation is facilitated by approaching to the right behind the driver's seat 2. Notch 2
Reference numeral 2 may be an elongated hole which can be operated by inserting the switching lever 8L without being limited to the notched one shown in the illustrated example.

Next, the scraping device 5 configured as described above is linked with the raising and lowering operation of the planting device 6 and the scraping device 5 is moved.
A description will be given of the support mechanism 7 for vertically adjusting the height of the scraping work. The support mechanism 7 includes a horizontal planting machine frame 65 (FIGS. 3 and 4) arranged in parallel along the width of the scraping device 5 and the above-described vertical planting machine frame 65. Planting machine frame 60
And a support rod 70, which will be described later, provided with a metal portion 50a that supports both sides of the rotary shaft 50 at a lower portion.

A horizontal shaft 72 is provided above the planting machine frame 60.
Is rotatably supported, and the support rod 70 is connected and supported by link arms 71 fixed to both ends of the horizontal shaft 72.
The horizontal shaft 72, an operation lever 7L provided at an appropriate position on the horizontal shaft 72, and a lever guide 73 fixed to the planting machine frame 60 so as to position and guide the operation lever 7L are provided.

Further, a supporting portion (guide) projecting forward from the horizontal planting machine frame 65 and supporting an intermediate portion of the supporting rod 70 at an end thereof to prevent lateral vibration and to slidably move vertically. ) 75 and the horizontal axis 7
2 and a spring 76 for attaching the lower end to the rotor cover 52 and urging and supporting the substitute device 5 upward. The supporting rod 70 is made of a pipe material.

The planting machine frame 60 is shown in FIG.
As shown in FIG. 7, the plant is tilted forward while being bent in the shape of a letter in a side view, and the seedling mounting table 61 is supported on the upper part thereof so as to be able to reciprocate in the horizontal direction. And the transmission case 51 (FIG. 4) are integrally provided to form a rigid frame.

The supporting portion 75 of the supporting member (supporting arm) 75a protruding from both sides of the horizontal planting frame 65 is shown in FIG.
As shown in FIG. 7, the support portion 7 is provided so as to be inclined backward along an axis connecting the horizontal shaft 72 and the rotary shaft 50.
5 has a lower supporting rod 70 having a metal portion 50a at a lower portion.
a so as to be slidable.
The upper support rod 70b is detachably connected to the upper support rod 70b via a connection pin 70c, and the upper support rod 70b is pin-connected to the tip of the link arm 71.

The supporting rod 70 is connected to a lower supporting rod 70a.
The upper support rod 70b and the upper support rod 70b form a straight line. The scraping device 5 supported at the lower end of the support rod 70 includes a horizontal shaft 72 disposed above and a rotor cover 52.
And a spring 76 is provided between them to support them upward. Therefore, the support mechanism 7 of the scraping device 5 configured as described above has a “triangular shape” in side view when the planting machine frame 60, the support portion 75, and the support rod 70 are assembled and connected to each other.
, And the substitute device 5 can be stably supported.

Further, while reducing the weight with a simple structure in which the frame structure is made as small as possible, the space between the rear wheel 1b and the planting device 6 is made compact as shown in FIG. It is possible to install them all together. Therefore, the planting device 6 can be arranged close to the traveling body 1 and the body length can be shortened.

The support portion 75 for slidably guiding a middle portion of the support rod 70 is inclined backward along an axis connecting the horizontal shaft 72 provided on the top of the planting machine frame 60 and the rotary shaft 50. Since the slanting device 5 is inclined, the scratching device 5 can be moved so as to be as close as possible to the rear wheel 1b in the scraping work posture in which the scratching device 5 is lowered. Is designed so that the rear wheel 1b can be smoothly retracted rearward from the rear wheel 1b.

Further, since the scraping device 5 moves up and down along a straight line inclined rearward at an arcuate position below the rear wheel 1b, it can be disposed close to the rear wheel 1b. ,
A compact device can be provided without taking up a large space. Further, as shown in FIG. 3, an operation lever 7L for performing the height adjusting operation of the scratching device 5 has a guide groove 77 opened in a vertical groove shape in a lever guide 73 fixed to the planting machine frame 60 in the vertical arc direction. It is guided so that positioning when rotating about the horizontal axis 72 can be performed easily and reliably.

That is, the lever guide 73 in the illustrated example has a plurality of adjusting grooves 77a at the lower position of the guide groove 77, which can adjust and lock the substitute work height (substitute height) of the substitute device 5 in plural stages. It is formed in a mountain valley shape. An engaging groove 7 for positioning and locking at a traveling height in which the scraping device 5 is separated from the ground at an upper position and is pulled up to a road traveling posture in which it is stored above.
7b is formed in a long groove shape. In the retracted position of the scratching device 5, only the planting operation can be performed as needed without performing the scratching operation.

With the construction of the lever guide 73, the operation lever 7L is moved to the guide groove
7, the scraping device 5 is lowered to the lowest position, and the deep scratching can be performed in a state where the scratching height is lowered. Also, the operation lever 7L is connected to the upper adjustment groove 7.
When locked to 7a, it is possible to perform shallow scratching with an increased scraping height, and it is possible to satisfactorily perform scraping work adapted to the condition of the field.

Further, the operation lever 7L is connected to the upper engagement groove 77.
3B, the substitute device 5 is in a free state in which the scraping device 5 is pulled up by the elasticity of the spring 76 and is urged and supported, so that the operating lever 7L is engaged with the engaging groove 7 as shown in FIG.
By contacting the upper end of 7b, the further movement (upward movement) of the scraping device 5 with respect to the planting device in the upward direction is restricted. Then, the operation lever 7L positioned in the engagement groove 77b.
As shown in FIG. 5, for example, when the substitute device 5 is moved up to the running posture and the substitute device 5 also moves upward, the substitute device 5 (the rotary shaft 50 in the illustrated example) is planted. Transmission shaft 12
However, the contact resistance causes the scraping device 5 to retreat downward against the elastic force of the spring 76, and the operating lever 7L is moved within the width of the engagement groove 77b as shown in FIG.
(B) can be released by freely moving in the direction of the arrow, so that the unreasonable contact between the two can be prevented, and the planting device 6 and the scraping device 5 can be kept in a light contact state having the elasticity of the spring 76. Can be favorably supported in a rising posture (running posture).

Therefore, it is possible to prevent mutual damage due to the abutment of the two and to arrange the two as close as possible, so that a compact transplanter A can be manufactured. There are advantages.

The transplanter A constructed as described above descends on the planting device 5 in the plowed and flooded field, and slides the float 6F made of a sliding body on the surface of the ground while the scraping device 5 Is rotated by the scraping drive shaft 81 while scraping is performed, and the planting depth of the planting device 5 is adjusted by the elevating mechanism 3.
Up and down, and the operation lever 7L
The seedlings can be planted at a certain depth in the field scene that has been scraped and evenly leveled by the scraping height adjustment according to (1).

In such simultaneous scraping and planting operation, when the operating lever 7L is switched into the engagement groove 77b of the lever guide 73, the scraping device 5 is turned on.
, The operating lever 7L can be easily raised with a small force to the storage position. Further, since the rising amount of the substitute device 5 is larger than that of the conventional device, the planting operation without performing the substitute operation and the road running operation without performing the simultaneous substitute planting operation can be smoothly performed. Is what you can do.

Then, as shown in FIG. 5, the scraping device 5 is installed below the planting transmission shaft 12 of the planting device 6. In addition to being provided so as to be able to contact the transmission shaft 12, the scraping device 5 is provided so as to descend and retreat at the time of contact between the two.

Therefore, when the operating lever 7L is operated to the engaging groove 77b to place the substitute device 5 in the retracted position, the planting device 6
And the substitute device 5 can be brought as close as possible to each other, so that the body can be shortened, and can be largely separated from the ground, so that road running work and the like can be performed favorably. is there.

Further, since the engaging groove 77b for supporting the scraping device 5 at the raised storage position is formed to be wide, when the scraping device 5 comes into contact with the planting transmission shaft 12 of the planting device 6, The operation lever 7L can freely and flexibly move (flexible movement) in the engagement groove 77b, and the trouble such as breakage due to the contact between the two can be prevented well. Is what you can do. Further, the transmission of the planting device 6 and the scraping device 5 at this time is automatically cut off by being raised by a predetermined amount by the elevating mechanism 3 using a conventional mechanism.

The lowering and retreating means of the scratching device 5 at the time of contact between the scratching device 5 and the planting device 6 in the illustrated example is performed by urging and supporting the scratching device 5 upward by a spring 76. Although the means by the support mechanism 7 is employed, the invention is not limited to this. For example, the cooperation means by a link mechanism or the electric cooperation means may be used.

When the scraping height is adjusted and the storage posture is raised, the scraping device 5 is tilted rearward so as to be inclined.
As the support rod 70 is guided and moves, the support rod 70 is lifted while being separated and retracted rearward and upward without contacting from a position approaching below the rear wheel 1b. Then, in the scraping work posture, the scratching device 5 can be lowered while moving forward and can be positioned close to the space formed by the outer circumferential arc of the rear wheel 1b and the ground, The split planting device 6 can be mounted and installed without disturbing the lifting and lowering of the scraping device 5 while approaching the rear wheel 1b.
The simultaneous planting work can be performed well.

At this time, the support mechanism 7 of the scraping device 5
A horizontal shaft 72 side of the planting machine frame 60 having the operation lever 7L;
When a support portion 75 formed on a support member 75a extending forward from below the planting machine frame 60 is assembled and connected to each other by a support rod 70 for supporting the scraping device 5, these are mounted as seedlings. Since the rigid frame which is formed in a triangular shape in a side view below the table 61 can be compactly and collectively installed, the scratching device 5 can be supported in a stable state, and the frame structure can be reduced as much as possible. With a simple structure made up of small members, the size and weight of the body can be reduced.

In the illustrated example, a support rod 70 for supporting the ground work machine 5 is fitted into a support portion 75 which is inclined obliquely rearward, so that the scraping device 5 moves up and down on a rearward inclination locus. However, the present invention is not limited to this. For example, the scraping device 5 may be moved up and down so as to move in a substantially vertical direction after retreating once on a backward inclined locus. The guide means may use another link mechanism by a guide.

[0043]

According to the present invention, in accordance with the first aspect of the present invention, a ground work machine is adjusted up and down along a guide provided on the planting device in front of the planting device supported on the traveling machine so as to be able to move up and down. By being provided as possible, the ground working machine can be raised and lowered stably and favorably between the rear wheel of the traveling body and the planting device.

According to the second aspect of the present invention, the guide is provided in a rearwardly inclined shape and the ground work machine is raised and lowered, so that the ground work machine is connected between the rear wheel and the planting device by the traveling body and the planting device. It can be installed without increasing the aircraft length.
According to the third aspect of the present invention, the scraping device 5 can be supported in a stable state, and the supporting structure can be made simple by using a small member. Can be achieved.

[Brief description of the drawings]

FIG. 1 is a side view showing a transplanter for simultaneous planting of substitutes according to an embodiment of the no-till transplanter of the present invention.

FIG. 2A is a plan view showing a configuration of a main part of FIG. 1,
(B) is a plan view showing the installation configuration of the switching lever.

FIG. 3A is a perspective view showing a configuration of a main part of FIG. 2;
(B) is a perspective view showing the relationship between the lever guide and the operation lever.

FIG. 4 is a plan view showing a support structure of the substitute device.

FIG. 5 is a side view showing a support structure of the substitute device and its operation.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 traveling machine body 1b rear wheel 2 driver's seat 3 elevating mechanism 5 substitute scraper 5a to 5e rotor 6 planting device 7 support mechanism 7L operating lever 8 power take-out mechanism 8L switching lever (shift lever) 12 planting transmission shaft 21 rear cover 22 notch Part 50 Rotary shaft 51 Transmission case 60 Planting machine frame 61 Seedling table 62 Planting part 62a Planting claw 63 Transmission case (planting transmission case) 65 Planting horizontal machine frame 70 Support rod 72 Horizontal axis
73 Lever guide 75 Support part 75a Support member 76 Spring 77 Guide groove 77a Adjustment groove 77b Engagement groove 80 Substitute drive shaft 86 Extraction case K Mounting interval

Claims (3)

[Claims] 1. A planting device 6 for planting a plurality of seedlings at the rear of a traveling body 1 having a front wheel 1a and a rear wheel 1b is supported via a lifting mechanism 3 so as to be able to move up and down.
A transplanter which supports the ground working machine 5 in the front side of the plant so that the ground working machine 5 can be moved up and down, wherein the ground working machine 5 can be adjusted up and down along a guide 75 provided on the planting device 6. . 2. The lifting and lowering structure of a non-tilling transplanter according to claim 1, wherein the guide 75 is provided in a rearwardly inclined shape so that the ground working machine 5 can be raised and lowered. 3. A guide 75 extends forward from the planting device 6, and an upper portion of a support rod 70 for supporting the ground work machine 5 is supported by the planting support frame 60 and is supported by the guide 75. 3. The method of claim 1 or 2, wherein the guide is provided for ascending and descending.
Item 6. A structure for lifting and lowering the ground working machine of the transplanting machine according to the above item.