JP2010004772A - Disk-type intertillage weeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk-type intertillage weeder capable of nearly equalizing the ridging amounts of three-section intertillage weeder. <P>SOLUTION: The disk-type intertillage weeder is constituted as follows. Right and left intertillage units 14 and 15 in the three-section intertillage units 13 to 15 are fixed to a main frame 11 by a first and second lock mechanism parts 25 and 26 while keeping the horizontal state so as not to be moved in the vertical direction, and so that only the center intertillage unit 13 may be moved in the vertical direction so as to follow the unevenness of a field. As a result, the tilling depth between right and left two ridges subsided by the tread pressure of wheels T of a traveling machine, and the tilling depth between mellow center ridges can nearly be equalized, and the ridging amounts of the first to third intertillage units 13 to 15 are nearly equalized. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a disk-type medium-cultivating weeder, and more particularly, to a medium-cultivating weeding machine that performs management work of medium-cultivating weed and cultivating soil with a plurality of disk pairs.

  Conventionally, a pair of disks are arranged in two rows on the front and rear, and the tractor or the riding management machine pulls forward to reverse the soil between the ridges in the horizontal direction with these disks to perform middle plowing weeding work or cultivating soil A plowing weeder is known (for example, see Patent Document 1).

  That is, in the conventional disc type middle tiller (10) disclosed in Patent Document 1, as shown in FIG. 9, the front row disc pair (42) that reverses the soil between the rows in the horizontal direction, and A middle tiller unit (30) having a rear disk pair (44) is provided.

The middle tillage unit (30) has one at the center of the main frame (54) extending in the width direction of the fuselage (in the direction crossing the stripes) and one on each of the left and right sides. (Not shown).
The middle tilling unit (30) disposed at the center of the main frame (54) is located at the center of the left and right of the tractor, and the middle of the loose ridge that is not subjected to the treading pressure of the wheels because the tractor straddles it. Further, in the central portion of the main frame (54), a connecting mechanism (70) provided with an upper link connecting portion (102) and a lower link connecting portion (104) for connecting to the three-point link hitch mechanism at the rear of the tractor. ) Is provided.
The two tillage units (30) arranged on the left and right sides of the main frame (54) are arranged behind the tractor tires, so that they cultivate the space that has been sunk flat by the tractor wheels. .
Further, a gauge ring (32) for adjusting the tilling depth of the middle tillage is provided at the front part or both left and right end parts of the main frame (54) so that the height can be adjusted.

These three tillage units (30) are attached to the main frame (54) via parallel links (126), and each of the three tillage units (30) follows the unevenness of the field. It can be moved up and down individually.
In addition, the triple tilling unit (30) has a support rod (28) extending upward from the respective tilling unit (30) and projecting upward from the main frame (54) to the respective tilling unit (30). The support frame 50 is supported so as to move up and down.

JP 2007-259812 A

  By the way, in the above-mentioned disk type middle tillage weeder, since the three middle tillage units (30) move up and down individually, compared with the tillage depth between the two left and right ridges that have subsided due to the tractor wheel pressure. However, there was a problem that the plowing depth between the loose central stripes tends to be deep. For this reason, since the amount of cultivated soil differs between the central streak and the right and left streak, weed control performance and crop performance (for example, soybean yield) vary from streak to streak.

  The present invention has been made in view of such problems and problems, and an object of the present invention is to provide a disk-type medium-cultivation weeding machine that can substantially match the cultivating amounts of three medium-cultivation units.

  In order to achieve the above object, a first aspect of the present invention is directed to a main frame extending in a direction crossing the gap, and a connecting portion extending forward from the main frame and connected to a rear portion of the traveling machine body. And a first cultivating unit having a plurality of disk pairs that are provided so as to be able to swing up and down at the center in the width direction of the main frame, and that are used for cultivating the soil between the strips on which the traveling machine body straddles, and for cultivating the soil. A plurality of disk pairs that are disposed so as to be fixable on both sides in the width direction of the main frame and that are subjected to stepping pressure on the wheels of the traveling machine body and that are used for middle plowing and cultivating of the soil, and are provided in front of the pair of disks. And a second tillage unit having a gauge ring for performing the above-described operation.

  In order to achieve the above object, the invention described in claim 2 includes, in addition to the configuration of the invention described in claim 1, first to third connecting the main frame and the first to third tillage units. A parallel link, first to third support frames projecting from the main frame toward the upper side of the first to third cultivated units, and an upper end of the first to third cultivated units. The first to third support rods that are swingably connected and the other end is supported by the first to third support frames so as to move up and down, the second support frame, and the second support frame A first lock mechanism connected to a support rod to restrict the vertical movement of the second support rod to restrict the swing of the second parallel link and to hold the second tillage unit in a horizontal state. And the third support frame and the third support rod A second locking mechanism that is connected and restricts the vertical movement of the third support rod to restrict the swing of the third parallel link and holds the third tillage unit in a horizontal state. It is characterized by.

  In order to achieve the above object, according to a third aspect of the present invention, in addition to the configuration of the first aspect, the first tillage unit is connected to the main frame via a parallel link, and the first The second and third tillage units are fixed directly or indirectly to the main frame.

According to the first and second aspects of the invention, during the management work, the first locking mechanism and the second locking mechanism are locked to move the second and third support rods up and down. The second and third parallel links are fixed in a horizontal state by restricting the swinging of the second and third tillage units. Moreover, according to invention of Claim 1, 3, instead of the 1st and 2nd locking mechanism part, the 2nd and 3rd tillage unit is directly or indirectly horizontal with the main frame. Fix it.
Then, only the first cultivating unit of the three cultivating units moves up and down following the unevenness of the field, and the second and third cultivating units support the main frame. Sufficient load (the weight of the unit alone is insufficient) is applied to the second and third tillage units to cultivate the solid streak with the wheel marks of the fuselage.

  As a result, the plowing depth between the two left and right stubs subtracted by the stepping pressure of the wheels of the traveling machine body (tractor, passenger management machine) and the plowing depth between the loosely central strips are substantially equal. It will be possible to make the soil volume of the middle tillage units almost equal. Since the amount of cultivated soil in the middle row and the right and left row is almost the same, weed control performance and crop performance (for example, soybean yield) do not differ from line to line.

  According to the disk-type tillage weeder of the present invention, among the three tillage units, the left and right tilling units are fixed to the main frame so as not to move up and down while maintaining the horizontal state, and only the center tilling unit is placed on the field. Since it is made to move up and down following the unevenness, the plowing depth between the left and right two lines that have subsided by the stepping pressure on the wheels of the traveling aircraft (tractor, riding management machine), and the plowing depth between the loose central line Since it becomes substantially equal, a disk type tillage weeding machine capable of substantially matching the cultivating amounts of the first to third tilling units is realized.

The disc type middle tillage weeder according to the embodiment of the present invention will be described in detail with reference to FIGS.
FIG. 1 is a left side view of a disk-type medium-cultivating weeder according to an embodiment of the present invention, FIG. 2 is a plan view of the disk-type medium-cultivating weeder in the same example, and FIG. 3 is a rear view of the same.

  As shown in FIGS. 1 to 3, the disc type medium tillage weeder 10 of the present invention has a main frame 11 extending in a direction crossing the striations, and extends from the main frame 11 to the front thereof. More specifically, the connecting portion 12 connected to the rear portion of the tractor (passenger management machine) and the soil cultivated between the strips over which the traveling machine body is slidably provided at the central portion in the width direction of the main frame 11. A first middle tilling unit 13 having a plurality of disk pairs 1300 and 1301 for weeding and cultivating, and a strip which is fixedly disposed on both sides in the width direction of the main frame 11 and receives the treading pressure of the wheels T of the traveling machine body. A second and a plurality of disk pairs 1400, 1401 or 1500, 1501 for plowing and cultivating soil in the soil, and a gauge ring 1402 or 1502 provided in front of the disk pair for controlling plowing depth And 3 Intertillage units 14 and 15, and is configured with a.

  Further, the disc type middle tiller 10 of the present invention includes first to third parallel links 16 to 18 that connect the main frame 11 and the first to third middle tillers 13 to 15 and the main frame 11 to the first. The first to third support frames 19 to 21 projecting upward from the first to third tillage units 13 to 15 and the upper ends of the first to third tillage units 13 to 15 can swing one end. 1st to 3rd support rods 22 to 24, the other end of which is connected to the 1st to 3rd support frames 19 to 21 so as to be movable up and down, the second support frame 20 and the second A first lock that is connected to the second support rod 23 and restricts the vertical movement of the second support rod 23 to restrict the swing of the second parallel link 17 and holds the second tillage unit 17 in a horizontal state. The mechanism unit 25 (shown in FIG. 1) and the third support frame Is connected to the boom 21 and the third support rod 24 to regulate the vertical movement of the third support rod 24 to regulate the swing of the third parallel link 18 and to bring the third tillage unit 15 into a horizontal state. And a second lock mechanism portion 26 (see FIGS. 4 and 5) for holding.

  More specifically, the main frame 11 is a square pipe-like frame member having a length that traverses between the three strips (see FIGS. 2 and 3). At the center in the width direction of the main frame 11, a mast 120 extending obliquely upward from the main frame 11 toward the front and the front from the main frame 11 are connected to the three-point link hitch mechanism at the rear of the traveling machine body. And a pair of left and right arms 121 extending obliquely downward, and a pair of lower hitch pins 122 projecting outwardly from the lower side of the left and right arms 111 are disposed.

  In order to support the first to third support frames 19 to 21 from below at the rear of the main frame 11, a round pipe-shaped subframe 27 having substantially the same length as that of the main frame 11 is provided behind the main frame 11. Cantilevered by a plurality of plate-like support arms 28 projecting toward the surface.

  In addition, a first middle tilling unit 13 for cultivating a loose space that does not receive the treading pressure of the wheels T because the traveling machine body straddles is disposed at the center in the width direction of the main frame 11, On the left and right sides of the frame 11 in the width direction, second and third middle tilling units 14 and 15 for tilling the striations subjected to the treading pressure of the wheels of the traveling machine body are disposed.

  Each of the three tillage units 13 to 15 connected to the main frame 11 is a front row disk pair 1300, 1400, 1500 and a rear row disk pair that rotate by the towing advance of the traveling body and reverse the soil between the striations in the horizontal direction. 1301,1401,1501.

Here, the second tillage unit 14 will be described as a representative. The two disks 1403 and 1404 constituting the front row disk pair 1400 are arranged in the left-right direction on the lower surface of the square pipe-shaped front row disk pair support frame 1405 extending in the longitudinal direction of the machine body. Are pivotally supported by a pair of front and rear swing arms 1406 and 1407 provided so as to be swingable.
These swing arms 1406 and 1407 are connected to the front row disk pair support frame 1405 as swing support points, and the disks 1403 and 1404 connected to the lower ends of the swing arms 1406 and 1407 are different from each other. It is arranged in a state of being separated from the front and rear so as to face the left and right sides.
In addition, a pair of left and right attachment attachment portions 1408 for attaching attachments (for example, chisel) are provided on the front portion of the front row disk pair support frame 1405 via attachment brackets 1409.

The disks 1410 and 1411 forming the rear disk pair 1401 are disk support rods 1415 and 1416 on a pair of left and right projecting arms 1413 and 1414 provided on the rear upper surface of a square pipe-shaped rear disk pair supporting frame 1412 extending in the longitudinal direction of the machine body. It is rotatably supported through
These projecting arms 1413 and 1414 can be expanded and contracted in the left-right direction, and are drilled in square pipe-shaped arm support portions 1417 and 1418 provided on the upper surface of the rear row disk pair support frame 1412 so as to support the projecting arms 1413 and 1414. Fixed pin inserted into (inserted / removed from) the pin holes 1419 and 1420 formed in the arm holes 1419 and 1420 slidably supported by the arm support portions 1417 and 1418. (Not shown) can adjust the amount of overhang in the left-right direction.

  The left and right disc support rods 1415 and 1416 are round pipe members extending while being bent in the vertical direction, and pin holes (not shown) drilled in the upper portions of the disc support rods 1415 and 1416, and the disc support rod 1415. , 1416 A fixed pin 1425 that is inserted (inserted / removed) into / from a pin hole (not shown) formed in a cylindrical outer fitting portion 1423, 1424 connected to the overhanging arms 1413, 1414 so as to fit the upper portion thereof. Alternatively, it is connected to the overhanging arms 1413 and 1414 by a fixing bolt 1426 (shown in FIG. 7).

  Also, the left and right disc support rods 1415 and 1416 are arranged so that the left and right discs 1410 and 1411 can be viewed in plan view in accordance with management work (cultivation or tilling) with the discs 1410 and 1411 supported. The left and right discs 1410 and 1411 can be interchanged so that the left and right discs 1410 and 1411 have a reverse letter C shape (see FIG. 7B) when plowing. It has become. Therefore, by replacing the left and right disc support rods 1415 and 1416, the rotation direction of the discs 1410 and 1411 is always one direction, so one for each disc 1410 and 1411 (two in the prior art), A scraper 1427 (shown in FIG. 1) for scooping off the adhering mud is provided.

  The disk support rods 1415 and 1416 include a plurality of pin holes 1429 and 1430 formed in the angle adjusting plates 1427 and 1428 connected to the overhanging arms 1413 and 1414, and two upper and lower parts connected to the disk support rods 1415 and 1416. The disk angle can be adjusted by a fixing pin 1433 that is inserted (inserted / removed) into / from a pin hole (not shown) formed in the flanges 1431 and 1432 (shown in FIG. 1).

  As shown in FIG. 1, the center of the front row disk pair support frame 1405 and the upper part of the rear row disk pair support frame 1412 are such that the front row disk pair support frame 1405 is on the lower side and the rear row disk pair support frame 1412 is on the upper side. In a state where a height difference is made between the two, a pair of left and right connecting frames 1434 extending in the vertical direction are integrated in a state sandwiched from the left and right sides.

  A second parallel link 17 is interposed between the upper part of the left and right connecting frames 1434 and the pair of left and right horizontal link mounting members 29 extending downward from the main frame 11. 14 can move up and down, that is, swing up and down while maintaining a horizontal state.

  The first and third cultivating units 13 and 15 are also configured in the same manner as the second cultivating unit 14.

Further, a gauge ring 1402 (also referred to as a ruler ring) is attached to the second tillage unit 14 via a gauge ring support arm 1435 extending forward so that the height can be adjusted.
The height of the gauge ring 1402 is adjusted by a plurality of pin holes 1437 drilled in the upper part of the gauge ring support rod 1436 that supports the gauge ring 1402 and the tip of the gauge ring support arm 1435 (the rod support part 1438 described later). This can be performed by a fixing pin 1439 that is inserted (inserted / removed) into / from a pin hole (not shown) drilled in (1).

  As shown in FIG. 2, the fixing pin 1439 includes a shaft portion 1440 that can be moved forward and backward in the left-right direction while being prevented from coming off by a rod support portion 1438 that forms the tip of the gauge wheel support arm 1435, and a shaft portion A spring (compression coil spring) 1441 provided between 1440 and the rod support portion 1438, a fitting portion 1442 whose tip is inserted into and removed from a pin hole 1437 and a pin hole (not shown), and a gripping portion 1443 held by an operator. When the gripping portion 1443 is pulled sideways, the fitting portion 1442 can be extracted from the pin hole 1437 or the like, and when the hand is released from the gripping portion 1443, the pin hole 1437 or the like is recovered by the restoring force of the spring 1441. The fitting portion 1442 can be inserted into the.

  In addition, the gauge ring 1502 of the third cultivating unit 15 is disposed in the same manner as the gauge ring 1402 of the second cultivating unit 14.

  Further, in the center of the upper surface of the rear row disk pair support frames 1312, 1412, and 1512 of the first to third tillage units 13 to 15, a round pipe shape that supports the first to third tillage units 13 to 15 from above. The lower ends of the first to third support rods 22 to 24 are connected so as to be swingable in the front-rear direction. Further, the upper end portions of the first to third support rods 22 to 24 are supported by the first to third support frames 19 to 21 so as to be movable up and down.

  Here, of the first to third support frames 19 to 21, the second support frame 20 will be described in detail. The upper end side of the second support frame 20 opens upward and downward and rearward. A U-shape is formed (see FIG. 2), and the second support rod 23 is fitted between the opposing surfaces of the left and right side surfaces of the second support frame 20 as shown in FIG. A cylindrical holder 30 that is supported so as to be vertically movable is fixed by a fixing bolt 31 that is fitted from the outside (left and right sides) of the second support frame 20. Thus, the holder 30 is regarded as a part of the second support frame 20.

  As shown in FIG. 1, the second support rod 23 positioned above the holder 30 includes a first spring (compression coil spring) 32 that restricts the downward movement of the second support rod 23. The flange 33 is externally fitted. The first spring 32 and the flange 33 are prevented from coming off upward by fixing pins 35 inserted into a plurality of pin holes 34 provided along the upper side of the first support rod. The holder 30 is prevented from coming off downward.

  Further, as shown in FIG. 1, the second support rod 23 positioned below the holder 30 has a second spring (compression coil spring) that restricts the upward movement of the second support rod 23. 36 and the flange 37 are externally fitted. The second spring 36 and the flange 37 are prevented from coming down downward by a fixing pin 38 that is inserted (inserted / removed) in a pin hole (not shown) provided on the lower side of the second support rod 23. And the holder 30 prevents the upper side from coming off.

  The first support rod 22 and the third support rod 24 are also configured in the same manner as the second support rod 23.

Next, of the first and second lock mechanism portions 25 and 26, the first lock mechanism portion 25 will be described as a representative with reference to FIGS.
4 is a plan view for explaining the first locking mechanism 25 in the same example, and FIG. 5 is a side view of FIG.

The first lock mechanism unit 25 restricts the vertical movement of the second support rod 23 by connecting (inserting and inserting) the second support rod 20 to the second support frame 20 and the second support rod 23. By restricting the swing of the parallel link 17, the second tillage unit 14 is fixed in a horizontal state.
That is, as shown in FIGS. 4 and 5, the first lock mechanism 25 includes the second support rod 23 and the holder 30 when the second cultivating unit 14 is in a horizontal state with respect to the soil. Pin holes 230, 300, 301 (two front and rear in the case of the holder 30) drilled in the second support rod 23 and the holder 30 so as to pass through the front and rear directions, and extend backward from the holder 30. The support member 39 provided on the support member 39 is supported by the second support rod 23 and the holder 30 so that the second support rod 23 and the holder 30 are supported by the support member 39 so as to be movable forward and backward while being supported by the support member 39. The fixed pin 40 that can be connected (inserted and inserted) into the provided pin holes 230, 300, and 301, and a spring (fitted externally to the fixed pin 40 so as to move the fixed pin 40 forward) Compression coil spring) 41; It is provided.

More specifically, the fixing pin 40 is made of an L-shaped round bar, and is formed by bending the longitudinal shaft portion 400 extending in the front-rear direction and the rear portion of the longitudinal shaft portion 400 in the left-right direction. And a shaft portion 401.
The support member 39 that supports the fixing pin 40 is formed in an h-shape in plan view, and extends in the front-rear direction and has a longitudinal portion 390 whose front end is fixed to the holder 30, and a longitudinal portion 390. And a short end 391 that is bent in the left-right direction (laterally) so that the front end is fixed to the holder 30 and the rear end is joined to the center of the side surface of the long portion 390. ing.

  In addition, a locking portion 392 that is notched so as to be able to lock the short shaft portion 401 of the fixing pin 40 is formed at the rear end portion of the long portion 391. In addition, the lateral short side portion 391 supports the longitudinal shaft portion 400 of the fixing pin 40 so as to be slidable, and pin holes 230, 300, drilled in the second support rod 23 and the holder 30. A shaft hole 393 that is coaxial with 301 is formed. A spring (compression coil spring) 41 is externally fitted to the longitudinal shaft portion 400 of the fixing pin 40 supported by the shaft hole 393. The front end portion of the spring 41 is locked to the longitudinal shaft portion 400 of the fixing pin 40, and the rear end portion is joined to the lateral short portion 391.

In the first lock mechanism portion 25 configured in this way, the short shaft portion 401 of the fixing pin 40 is moved rearward, and the fixing pin 40 is moved as shown by a one-dot chain line in FIG. When the front end portion of the longitudinal shaft portion 400 is positioned in the pin hole 300 on the rear side of the holder 30, the vertical movement of the rod 23 is not restricted.
Then, when the fixing pin 40 is rotated and the short shaft portion 401 of the fixing pin 40 is locked to the locking portion 392 of the support member 39, the rod 23 is moved up and down even if the hand is released from the fixing pin 40. An unregulated state is maintained.
At this time, the front end portion of the spring 41 is located at a position P1 in FIG. 5, and the spring 41 is in a compressed state.

On the other hand, when the short shaft portion 401 of the fixing pin 40 is detached from the locking portion 392 of the support member 39, the fixing pin 40 tends to move forward due to the restoring force of the compressed spring 41. Here, if the second cultivating unit 14 is in a horizontal state with respect to the soil, the fixing pin 40 moves forward, and the longitudinal shaft portion 400 becomes a pin hole 230 between the second support rod 23 and the holder 30. By connecting (inserting, inserting) to 301, the vertical movement of the second support rod 23 is regulated.
In this state, the front end of the spring 41 is located at the position P2 in FIG.

  As described above, the first locking mechanism 25 is configured to be able to perform a locking operation if the second medium tiller unit 14 is in a horizontal state, and the second medium tiller unit 14 is in a horizontal state. When the first locking mechanism 25 is in a locked state, the pin holes 230, 300, 301 provided in the second support rod 23 and the holder 30 connected to the second support frame 20 When the fixing pin 40 is connected (fitted or inserted) in a hook shape, the vertical movement of the second support rod is restricted, and the swing of the second parallel link is restricted, so that the second tillage unit is It can be fixed in a horizontal state.

  The second lock mechanism portion 26 is also configured in the same manner as the first lock mechanism portion 25, and the second lock mechanism portion 26 can be locked when the third tillage unit 15 is in a horizontal state. When the third tillage unit 15 is in a horizontal state and the second lock mechanism 26 is locked, the holder 30 of the third support frame 21 and the second When the fixing pin 40 is connected to a pin hole (not shown) provided in the third support rod 24 in a hook shape (fitted or inserted), the vertical movement of the third support rod 24 is restricted. By restricting the swing of the three parallel links 18, the third tillage unit 15 can be fixed in a horizontal state.

  Therefore, during the management work, the first locking mechanism 25 and the second locking mechanism 26 are locked with the second and third tilling units 14 and 15 being level with respect to the soil. Thus, the vertical movement of the second and third support rods 24 is restricted, and the second and third parallel links 18 are kept in the horizontal state by restricting the swinging of the second and third tilling units 15. Fix to the frame 11.

  Then, only the first cultivating unit 13 among the three cultivating units 13 to 15 moves up and down following the unevenness of the field, and the main frame 11 is moved to the second and third cultivating units 14 and 15. As a result, the second and third tillage units 14 and 15 are loaded with sufficient load (the weight of the unit alone is not enough) to cultivate the solid streak with the wheel marks of the traveling aircraft. become.

As a result, as shown in FIGS. 6 and 7, the plowing depth between the two left and right ridges sunk by the stepping pressure on the wheels T of the traveling machine body and the plowing depth between the loose central ridges can be made substantially equal. It is possible to make the cultivated amounts of the first to third tillage units 13 to 15 substantially coincide with each other. For this reason, the amount of cultivated soil between the central streak and the right and left streak is almost the same, so that weed control performance and crop performance (for example, soybean yield) do not differ from streak to streak.
In addition, FIG. 6 is an explanatory diagram for explaining a state in which middle plowing and soil cultivation have been performed with the present disk type middle tillage weeder, FIG. 7A is a diagram showing a state of a rear row disk pair at the time of soybean cultivation, (B) is the figure which showed the state of the back row disk pair at the time of soybean plowing.

In the present embodiment, the second and third tilling units 14 and 15 are fixed in a horizontal state by the first and second lock mechanism portions 25 and 26 described above. Without being limited thereto, the second and third tilling units 14 and 15 are indirectly connected to the main frame 11 in a horizontal state as shown in FIG. 8 instead of the second and third parallel links 17 and 18. Alternatively, the first and second lock mechanism portions 25 and 26 described above may be omitted by using the joint member 42 that is fixed in an automatic manner.
Further, instead of the joint member 42 for fixing the second and third tilling units 14 and 15 in a horizontal state, the second and third tilling units 14 are either mechanically joined, chemically joined, or metallurgically joined. , 15 may be directly fixed to the main frame 11.

  In addition, the present invention is not limited to the disk-type medium-cultivating weeder having three continuous tillers, and can be applied to a disk-type medium-cultivating weeder having five continuous units.

It is a left view of the disk type middle tillage weeder according to one embodiment of the present invention. It is a top view of the disk type middle plowing weeder in the same example. It is a rear view of the same. It is a top view for demonstrating the locking mechanism part in the example. FIG. 5 is a side view of FIG. 4. It is explanatory drawing for demonstrating the state which carried out the middle plowing weeding and cultivation with this disc type middle plowing weeder. (A) is the figure which showed the state of the back row disk pair at the time of soybean cultivation, (b) is the figure which showed the state of the back row disk pair at the time of soybean medium cultivation. It is a left view of the disk type middle tillage weeder according to another embodiment of the present invention. It is a figure for demonstrating the conventional disc type middle plowing weeder.

Explanation of symbols

10 ... Disc type middle weeder
11 ... Mainframe
13 ... First tillage unit
14 ... Second tillage unit
1402 ... Gauge wheel
15 ... Third tillage unit
1502 ... Gauge wheel
16 ... 1st parallel link
17 ... Second parallel link
18 ... Third parallel link
19 ... 1st support frame
20 ... second support frame
21 ... Third support frame
22 ... 1st support rod
23. Second support rod
24 ... Third support rod
25. First locking mechanism
26: Second lock mechanism
42. Joint member

Claims (3)

A main frame extending in a direction crossing the striations;
A connecting portion extending forward from the main frame and connected to a rear portion of the traveling aircraft body;
A first cultivating unit having a plurality of disk pairs that are provided so as to be able to swing up and down at a central portion in the width direction of the main frame, and that are used for cultivating and cultivating soil between the strips on which the traveling machine body straddles;
A plurality of disk pairs that are disposed so as to be fixable on both sides in the width direction of the main frame and that are subjected to stepping pressure on the wheels of the traveling machine body and that are subjected to soil plowing and cultivating the soil, and are provided in front of the disk pairs. Second and third tillage units having gauge wheels for controlling;
A disc-type plowing weeder characterized by comprising: First to third parallel links connecting the main frame and the first to third tillage units;
First to third support frames projecting upward from the main frame toward the first to third tillage units;
One end is connected to the upper part of the first to third tillage units so as to be swingable, and the other end is supported by the first to third support frames so as to be movable up and down. A support rod;
Connected to the second support frame and the second support rod to regulate the vertical movement of the second support rod to regulate the swing of the second parallel link, and to A first locking mechanism that holds in a horizontal state;
Connected to the third support frame and the third support rod to regulate the vertical movement of the third support rod to regulate the swing of the third parallel link, A second locking mechanism portion that is held in a horizontal state;
The disc-type medium-cultivating weeder according to claim 1, comprising: The first tillage unit is connected to the main frame via a parallel link, and the second and third tillage units are directly or indirectly fixed to the main frame.
The disc-type medium-cultivating weeder according to claim 1.

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