JP2008237063A - Paddy working machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To compose a paddy working machine so that a ground implement hardly moves in right and left directions even when a load is applied from the right and left directions to the ground implement in the paddy working machine supporting a paddy implement at the rear of the machine body and liftably and lowerably supporting the ground implement on the paddy implement. <P>SOLUTION: The paddy working machine is equipped with lifting and lowering mechanisms 71 and 77 in a part of the paddy implement on the right and left central sides of the right lateral part and the left lateral part of the ground implement 54 in a part of the paddy implement in the upper part in the right lateral part and the left lateral part of the ground implement 54. Linking members 72 are connected over the right and left lateral parts of the ground implement 54 and the lifting and lowering mechanisms 71 and 77 to move and drive the linking members 72 to the upper side and the lower side with the lifting and lowering mechanisms 71 and 77. Thereby, the ground implement 54 is lifted, lowered and driven. The machine body is equipped with a storage part for storing an agricultural feeding material and delivering parts and the paddy implement is provided with feeding parts for feeding the agricultural feeding material to the paddy surface. Thereby, transporting hoses 22 connected over the delivering parts and the feeding parts are arranged between the linking members 72 and the paddy implement. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a paddy field work machine (such as a riding type rice planting machine or a riding type direct seeding machine) that supports a paddy field working apparatus (such as a seedling planting apparatus or a direct sowing apparatus) at the rear part of the machine body.

  In a riding type rice transplanter which is an example of a paddy field work machine, for example, as disclosed in Patent Document 1, a seedling planting device (corresponding to a paddy field work apparatus) is provided at the rear part of the machine body (see FIGS. 1 and 2 of Patent Document 1). 5), and a ground leveling device (corresponding to the ground work device) (53 in FIGS. 1, 2, and 4 of Patent Document 1) is supported by the seedling planting device so as to be movable up and down. Thereby, it is possible to plant seedlings with the seedling planting device while leveling the surface with the leveling device, and the height (leveling depth) of the leveling device can be changed.

  In Patent Literature 1, right and left arms (55a in FIGS. 2, 3 and 7 of Patent Literature 1) are provided on the right and left sides of the upper part of the seedling planting device, and the right and left sides and right and left sides of the leveling device are provided. The right and left linking members (56 in FIGS. 2, 3, and 7 of Patent Document 1) are connected across the left arm. A support shaft (55 in FIGS. 2, 3 and 7 of Patent Document 1) for operating the right and left arms up and down, and an operating lever (58 in FIGS. 2, 3, and 7 in Patent Document 1); The height (leveling depth) of the leveling device can be changed by operating the right and left arms up and down with the operating lever (58 in FIGS. 2, 3 and 7 of Patent Document 1).

JP-A-2005-341881 JP 2003-174807 A

  In Patent Document 1, when viewed from the front (see FIG. 3 of Patent Document 1), the right and left linking members (56 of FIGS. 2, 3, and 7 of Patent Document 1) are arranged substantially vertically, The linkage members are in parallel with each other, and the right and left linkage members and the leveling device (53 in FIGS. 2, 3, and 7 of Patent Document 1) are viewed in front view (see FIG. 3 in Patent Document 1). It is arranged in a rectangular shape. Thus, for example, when a load is applied to the leveling device from the left-right direction, the right and left linkage members swing in the left-right direction, and the rectangular shape formed by the right and left linkage members and the leveling device collapses into a parallelogram, and the leveling device There is a possibility that the device may be in a state of translating in the horizontal direction.

  The present invention provides a paddy field work machine that supports a paddy field work device at the rear part of the machine body and supports the ground work device so as to be movable up and down on the paddy field work device. The object is to make it difficult to move in the left-right direction.

(Constitution)
The first feature of the present invention is that the paddy field machine is configured as follows.
The paddy field work device is supported at the rear of the machine body, and the ground work device is supported by the paddy field work device so as to be movable up and down. A lifting mechanism is provided in a portion of the paddy field work device above the right side and left side of the ground work device, and in a portion of the paddy field work device on the left and right center side of the right side and left side of the ground work device. A link member is connected across the right side of the ground work device and the lifting mechanism, and a link member is connected across the left side of the ground work device and the lift mechanism. The ground working device is configured to be movable up and down by driving the linkage member upward and downward by the lifting mechanism. The airframe includes a storage unit that stores the agricultural supply body, and an agricultural supply body that feeds the agricultural supply body of the storage unit. The paddy field work device is provided with a supply unit that supplies the agricultural supply body to the rice field. A conveying hose connected across the feeding unit and the supply unit is disposed between the linkage member and the paddy field work device.

(Function)
[I]
According to the first feature of the present invention, the right linking member extends obliquely outward and downward to the right from the lifting mechanism, and the left linking member extends obliquely outward and downward to the left from the lifting mechanism. Yes, the right and left linking members and the ground work device are arranged in a trapezoidal shape when viewed from the front.

According to the first feature of the present invention, for example, as shown in FIG. 3, when a load is applied to the ground work device 54 in the left direction of the paper, if the link member 72 on the right side of the paper tries to swing in the left direction of the paper, Accordingly, the right side portion of the ground work device 54 tends to move downward, and if the left linking member 72 swings leftward on the paper surface, the left side portion of the ground work device 54 is moved accordingly. Tries to move up.
If the right and left linking members try to swing in the left-right direction in this way, the attitude of the ground work device tends to change greatly accordingly (the right and left side portions of the ground work device will move upward or downward). Therefore, the state change of the ground work device becomes resistance, and the state where the right and left linkage members try to swing in the left-right direction is suppressed, and the state where the ground work device tries to move in the left-right direction is suppressed. It can be suppressed.

[II]
In the riding type rice transplanter which is an example of the paddy field work machine, as disclosed in Patent Document 2, the right and left side portions of the seedling planting apparatus (10 in FIG. 1 and FIG. 2 of Patent Document 2) Working posture (see the solid lines in FIGS. 1 and 2 of Patent Document 2), and the upper storage, provided with the left marker (20 in FIGS. 1 and 2 of Patent Document 2), and grounding the right and left markers to the paddy field There are many configurations that can be freely operated in the posture (see the two-dot chain line in FIG. 2 of Patent Document 2).

According to the first feature of the present invention, with respect to the right side of the ground work device, the upper part of the right linkage member and the lifting mechanism are located on the left and right center side of the paddy field work device, and with respect to the left side of the ground work device, Since the upper part of the left linking member and the lifting mechanism are located on the left and right center side of the paddy field work device, the upper part of the lifting mechanism and the right and left linking members enter the left and right center side of the paddy field work device. Therefore, a relatively large space exists on the right and left lateral outer sides of the upper part of the lifting mechanism and the right and left linkage members.
Thus, for example, in a riding type rice transplanter, when the right and left markers are provided on the right and left sides of the seedling planting device, the elevating mechanism, the right and left linkage members are relatively positioned on the right and left lateral outer sides. Due to the presence of the large space, even if the right and left markers are operated to the retracted posture, the right and left markers do not interfere with the upper portions of the lifting mechanism and the right and left linkage members.

[III]
In a riding-type rice transplanter that is an example of a paddy field work machine, for example, as disclosed in Patent Document 1, a hopper (corresponding to a storage unit) that stores granular fertilizer (corresponding to an agricultural supply body) (Patent Document 1) 1) and a grooving device for supplying fertilizer to the rice field (corresponding to the supply portion) (corresponding to the supply portion) (refer to Patent Document 1) 15 and 15) is provided in the seedling planting device, and a transport hose (16 in FIG. 1 and FIG. 2 in Patent Document 1) is connected across the feeding portion and the groove producing device. As a result, the fertilizer of the hopper is fed out by the feeding unit and is supplied to the grooving device via the transport hose, and the fertilizer can be supplied to the rice field along with the seedling planting by the seedling planting device.

As described above, the storage unit and the feeding unit are provided in the machine body, the supply unit is provided in the paddy field work device, and the transport hose connected between the feeding unit and the supply unit is in the vicinity of the right and left linkage members. When arranged, according to the first feature of the present invention, for example, as shown in FIGS. 3 and 4, the conveyance hose 22 is arranged between the right and left linkage members 72 and the paddy field work device.
As described in [I] above, when the ground work device is supported by the paddy field work device so as to be movable up and down, and the ground work device is configured to be driven up and down by the lifting mechanism and the right and left linkage members, The linking member is rarely disposed close to the paddy field work device, and may be disposed slightly away from the paddy field work device.
This makes it possible to place the transport hose close to the paddy field work apparatus (along the paddy field work apparatus) while avoiding interference with the right and left linking members (for example, in the right And while avoiding interference with the left linking member, the transfer hose can be placed close to the seedling bed without difficulty (along the seedling bed) and placed near the seedling planting position. The transport hose can be easily connected to the supply section.

(The invention's effect)
According to the first feature of the present invention, in the paddy field work machine that supports the paddy field work device at the rear part of the machine body and supports the ground work device so as to be movable up and down on the paddy field work device, the lifting mechanism for driving the ground work device up and down, By devising the arrangement of the right and left linkage members, it is possible to suppress the state in which the ground work device tries to move in the left-right direction, and to demonstrate the work performance of the ground work device without waste. I can do it now.

  According to the first feature of the present invention, when the right and left markers are provided on the right and left sides of the seedling planting device in, for example, a riding type rice transplanter, the right and left markers are the lifting mechanism, the right and left linkage members It is now possible to operate the right and left markers in the retracted position without interfering with the upper part of the camera.

  According to the first feature of the present invention, the transport hose can be arranged close to the paddy field work apparatus (along the paddy field work apparatus) while avoiding interference with the right and left linking members. The agricultural supply body can be supplied to the supply section without difficulty, and the supply performance of the agricultural supply body can be improved.

[1]
As shown in FIG. 1, a four-row type seedling planting device 5 (corresponding to a paddy field working device) is connected to the rear part of the machine body supported by the right and left front wheels 1 and the right and left rear wheels 2. ) Is supported so as to be movable up and down, and a hydraulic cylinder 4 that drives the link mechanism 3 to move up and down is provided to constitute a riding type rice transplanter that is an example of a paddy field work machine.

Next, the seedling planting device 5 will be described.
As shown in FIGS. 1, 4, and 5, the seedling planting device 5 has two rotations that are rotatably supported at the rear of the feed case 17, the right and left transmission cases 6, and the right and left transmission cases 6. The case 7, the two planting arms 8 provided at both ends of the rotating case 7, the center float 9, the right and left side floats 10, and the four seedling setting surfaces are reciprocated in the lateral direction. A seedling table 11 and the like are provided. The feed case 17 and the right and left transmission cases 6 are fixed rearward to a support frame 18 arranged in the left-right direction, and the front and rear axial cores P1 (see FIG. 5) below the support member 19 connected to the rear part of the link mechanism 3. 3 and FIG. 4), the feed case 17 is supported so as to be able to roll around (the seedling planting device 5 is supported so as to be able to roll around the longitudinal axis P1).

  As shown in FIGS. 2, 3, and 4, the guide rail 38 is supported in the left and right directions by the right and left transmission cases 6, and the lower portion of the seedling support 11 is supported along the guide rail 38 so as to be laterally movable. Yes. The right and left support frames 26 are fixed to the right and left sides of the support frame 18 and arranged in the vertical direction, and the support frames 20 and 28 are fixed over the upper and lower portions of the right and left support frames 26. Yes. A guide rail 27 is fixed to the front surface of the upper part of the seedling base 11, and the guide rail 27 and the seedling base 11 are supported by the rollers 21 supported by the right and left support frames 26 so as to be laterally movable. .

  As shown in FIGS. 2 and 3, the support arm 29 is fixed to the support member 19 and extends upward, and the bracket 27 a fixed to the right and left sides of the guide rail 27, and the support arm 29. A right spring 47 and a left spring 47 are connected. The seedling planting device 5 is urged by the right and left springs 47 in a posture parallel to the airframe, and the right or left spring 47 is moved in accordance with the reciprocating lateral feed driving of the seedling placing table 11. When extended, the rightward or leftward inclination of the seedling planting device 5 is suppressed by the urging force of the right or left spring 47.

  As shown in FIGS. 1, 2, and 5, on the rear side of the driver seat 12, a hopper 13 (corresponding to a storage part) that stores fertilizer (corresponding to an agricultural supply body) and two pieces corresponding to two planting strips The feeding portion 14 is provided, and a blower 15 is provided on the lateral side of the feeding portion 14. Two groovers 16 (corresponding to the supply section) are fixed to the center float 9, and one groover 16 is fixed to the right and left side floats 11, and four groovers 16 are provided. The four conveying hoses 22 are connected across the feeding portion 14 and the groove generator 16.

  As shown in FIGS. 1 and 12, right and left markers 83 are provided on the right and left lateral sides of the support frame 18, and the right and left markers 83 are grounded to the surface G to form an index. It is configured to be operable to an action posture (see FIG. 1) and a retracted posture (see FIG. 12) separated upward from the field G. The right and left markers 83 include an arm portion 83a that is supported by the support frame 18 so as to be swingable up and down, and a rotating body 83b that is supported at the tip of the arm portion 83a so as to be freely rotatable. Yes.

[2]
As shown in FIGS. 1, 2, 3 and 4, the power of the engine (not shown) is transmitted to the input shaft 25 penetrating the support frame 18 through the planting clutch 23 (see FIG. 11) and the PTO shaft 24. Then, it is transmitted from the input shaft 25 to the feed case 17. The power of the input shaft 25 is transmitted to a lateral feed shaft (not shown) that drives the seedling bed 11 to reciprocate and laterally feed through a lateral feed speed change mechanism (not shown) of the feed case 17. Includes a transmission chain 30 of the feed case 17, a transmission shaft 31 installed over the right and left transmission cases 6, an input shaft 32 of the right and left transmission cases 6, a transmission chain 33, a small number of clutches 34, and a drive shaft 35. Is transmitted to the rotating case 7 via A cylindrical cover 36 is fixed over the feed case 17 and the right and left transmission cases 6, and the transmission shaft 31 is covered by the cover 36.

  When the planting clutch 23 is operated in the transmission state, the rotary case 7 is driven to rotate counterclockwise in FIG. The planting arms 8 alternately take out the seedlings from the lower part of 11 and plant them on the rice field G. When the planting clutch 23 is operated in the disconnected state, the reciprocating lateral feed driving of the seedling platform 11 and the rotational driving of the rotating case 7 are stopped.

  As shown in FIG. 1, the power of an engine (not shown) is transmitted to the feeding portion 14 via a fertilizing clutch 37 (see FIG. 11), and the feeding portion 14 is operated and stopped by the fertilizing clutch 37. Thereby, along with the seedling planting as described above, the fertilizer is fed from the hopper 13 by a predetermined amount by the feeding unit 14, and the fertilizer is supplied to the groove producing device 16 through the conveying hose 22 by the blower 15. Therefore, fertilizer is supplied to the rice field G through the grooving device 16.

[3]
Next, the raising / lowering control mechanism of the seedling planting apparatus 5 will be described.
As shown in FIGS. 2, 5, and 6, the support shaft 41 is rotatably supported around the horizontal axis P <b> 2 of the bracket 39 fixed to the right and left sides of the support frame 18, and is fixed to the support shaft 41. The support arm 41a extends rearward, and the center float 9 and the rear portions of the right and left side floats 10 can swing up and down around the horizontal axis P3 at the rear end of the support arm 41a of the support shaft 41. It is supported. An artificially operable planting depth lever 42 is fixed to the support shaft 41 and extends forward and upward. The lever guide 43 fixed over the support frames 18 and 28 and the feed case 17 is planted. A depth lever 42 is inserted.

  As shown in FIGS. 5, 6, and 11, the support arm 41 a of the support shaft 41 is rotated by the planting depth lever 42, and the horizontal axis P <b> 3 (center float 9, right and left side floats 10). By changing the position up and down, the planting set height A1 (set depth) (height from the surface G to the support shaft 41 (horizontal axis P2)) can be changed. By engaging the lever 42 with the lever guide 43, the position of the horizontal axis P3 (center float 9, right and left side float 10) is fixed, and the planting set height A1 (set depth) is set. Can be set.

  As shown in FIGS. 5, 6, and 7, the bracket 9 a is fixed to the left side of the front end portion of the center float 9, and the operation rod 45 is connected to the bracket 9 a of the center float 9. The bracket 45 a is fixed to the upper end portion of the operation rod 45. A bracket 46 is fixed to the support frame 18, and a balance-like linkage arm 48 is swingably supported around the longitudinal axis P <b> 4 of the bracket 46, and a linkage rod 49 connected to the end of the linkage arm 48 is supported. The lower end portion of the linkage rod 49 is connected to the linkage arm 41 b that extends downward through the frame 18 and is fixed to the support shaft 41.

  As shown in FIGS. 6, 7, and 11, a machine-operated control valve 50 that supplies and discharges hydraulic oil to and from the hydraulic cylinder 4 is provided in the machine body, and an inner 51 a of a wire 51 is connected to the control valve 50. Yes. The outer 51 b of the wire 51 is fixed to the bracket 45 a of the operation rod 45, and the inner 51 a of the wire 51 is connected to the end of the linkage arm 48.

  6, 7, and 11, since the center float 9 follows the ground surface G, the operating rod 45 and the bracket 45a of the operating rod 45 are located at a certain height from the surface G. Since the planting depth lever 42 is engaged and fixed to the lever guide 43, the linkage arm 48 is fixed to the seedling planting device 5 by the linkage arm 41b and the linkage rod 49 of the support shaft 41 (front and rear). In a state where it does not swing around the axis P4.

  With the above structure, when the seedling planting device 5 moves up and down due to a change in the attitude of the machine body, the linkage arm 48 moves up and down together with the seedling planting device 5, and the inner 51 a of the wire 51 is pushed and pulled by the linkage arm 48. The control valve 50 is operated by the inner 51 a of the wire 51. The supply / discharge operation of the hydraulic oil is performed by the control valve 50, the seedling planting device 5 is driven up and down by the hydraulic cylinder 4, and the planting set height A1 (set depth) is maintained (seedling planting device 5). (The planting depth of the seedling by the planting arm 8 is maintained at the set depth) (elevation control mechanism).

  As shown in FIGS. 6, 7, and 11, when the position of the horizontal axis P3 (center float 9, right and left side float 10) is changed by the planting depth lever 42, a new planting set height A1 ( Setting depth) is set. Along with this, the posture of the linkage arm 48 is changed around the longitudinal axis P4 by the linkage arm 41b and the linkage rod 49 of the support shaft 41, and the vertical distance between the bracket 45a of the operation rod 45 and the end of the linkage arm 48 ( The length of the inner 51a of the wire 51 is maintained at a value corresponding to the neutral position of the control valve 50 regardless of the change in the planting set height A1 (set depth).

[4]
Next, the raising / lowering operation of the seedling planting apparatus 5 will be described.
As shown in FIGS. 1 and 11, an elevating operation lever 53 is provided on the right side of a steering handle 52 that steers the front wheel 1, and the elevating operation lever 53 is in a raised position, a neutral position, a lowered position, and planting. The elevating operation lever 53, the control valve 50, the planting and fertilizing clutches 23 and 37 are mechanically linked to each other.

  As shown in FIG. 11, when the elevating operation lever 53 is operated to the raised position, the planting and fertilization clutches 23 and 37 are operated in the disconnected state, and the elevating control mechanism described in [3] above is stopped. The valve 50 is operated to the raised position and the seedling planting device 5 is raised. When the elevating lever 53 is operated to the neutral position, the planting and fertilizing clutches 23 and 37 are operated in the disconnected state, and the control valve 50 is operated to the neutral position in the state where the elevating control mechanism described in [3] is stopped. The raising / lowering of the seedling planting device 5 is stopped.

  As shown in FIG. 11, when the elevating operation lever 53 is operated to the lowered position, the planting and fertilizing clutches 23 and 37 are operated in the disconnected state, and the elevating control mechanism described in [3] above is stopped. When the valve 50 is operated to the lowered position, the seedling planting device 5 is lowered, and the center float 9 is brought into contact with the rice field G, the lifting control mechanism described in the previous item [3] is activated. When the elevating operation lever 53 is operated to the planting position, the planting and fertilizing clutches 23 and 37 are operated to the transmission state in addition to the state where the elevating operation lever 53 is operated to the lowered position.

[5]
Next, the leveling device 54 (corresponding to the ground work device) provided between the seedling planting device 5 and the machine body will be described.
As shown in FIGS. 2, 3, and 4, the support frame 55 is fixed to the left side of the support frame 18, the boss member 64 is fixed to the support frame 55, and the transmission shaft 31 and the input shaft 32 around the horizontal axis P <b> 5. Further, the transmission case 56 is supported by the boss member 64 so as to be swingable up and down. A support frame 57 is fixed to the right side of the support frame 18 so that the support arm 58 can swing up and down around the horizontal axis P5 of the support frame 57 (the horizontal axis P5 of the transmission shaft 31 and the input shaft 32). A drive shaft 61 having a square cross section is rotatably supported across the transmission case 56 and the support arm 58.

  As shown in FIG. 9, a small-width rotating body 62 formed integrally with a synthetic resin is provided. The rotator 62 has a boss portion 62a, a mounting hole 62b having a square cross section formed in the boss portion 62a, an arm portion 62c extending radially from the boss portion 62a, and a convex shape connected to the end of the arm portion 62c. The ground leveling part 62d is provided, and a large space 62e is formed between the adjacent arm parts 62c.

  As shown in FIGS. 3 and 4, the drive shaft 61 is inserted into the boss portions 62 a (mounting holes 62 b) of the large number of rotating bodies 62, and the rotating body 62 is fixed to the driving shaft 61. The three spacers 63 at the center, right and left are fitted on the outside, and the plurality of rotating bodies 62 are divided into four sets, and the positions are determined so that gaps are generated therebetween. In the four sets of rotating bodies 62, the phase (position) of the arm portion 62c (space 62e) of the adjacent rotating body 62 is shifted (the phase (position) of the arm portion 62c of the adjacent rotating body 62 and the space 62e is different). The phase of the rotating body 62 is shifted and fixed to the drive shaft 61 so as to match.

  As shown in FIGS. 2, 3, and 4, the leveling device 54 is configured by the drive shaft 61, the rotating body 62, the transmission case 56, the support arm 58, and the like. A ground leveling device 54 is provided between the seedling planting device 5 (center float 9, right and left side floats 10) and the aircraft (right and left rear wheels 2), and a transmission case 56 and a support arm 58 are provided. Swings up and down around the horizontal axis P5, so that the leveling device 54 is supported to be raised and lowered.

  As shown in FIGS. 2 and 4, a metal upper cover 84 having an L-shaped cross section and a width substantially equal to the width of the leveling device 54 is fixed to the front portion of the support frame 18. Covers the upper part of the leveling device 54 (rotary body 62). A lower cover 60 having a soft sheet shape such as vinyl and having a width substantially equal to the width of the leveling device 54 is fixed to the lower portion of the upper cover 84 and hangs downward. The lower cover 60 covers the rear of the leveling device 54. ing. The upper and lower covers 84 and 60 are located above and behind the leveling device 54 (rotating body 62), and located in front of the center float 9 and the right and left side floats 10, and the leveling device 54 (rotating body 62). ) Is prevented from depositing on the center float 9 and the right and left side floats 10.

[6]
Next, the drive structure of the leveling device 54 will be described.
As shown in FIG. 4, the transmission shaft 66 connected to the input shaft 32 is disposed inside the boss member 64 and the transmission case 56, and the torque limiter 59 is fitted on the transmission shaft 66 inside the transmission case 56. A transmission chain 67 is wound around the torque limiter 59 and the drive shaft 61. A cylindrical cover 36 is fixed over the left transmission case 6 and the boss portion 64, and the transmission shaft 66 is covered by the cover 36.

  As described in the preceding paragraphs [2] and [4], when the planting clutch 23 (see FIG. 11) is operated in the transmission state, the seedling support 11 is rotated as the seedling table 11 is reciprocated laterally and laterally. The case 7 is driven to rotate counterclockwise in FIG. 1, and the planting arm 8 alternately takes out the seedlings from the bottom of the seedling base 11 and plants them on the field G. The power of the transmission shaft 31 and the input shaft 32 is The rotator 62 (leveling device 54) is transmitted to the leveling device 54 and is driven to rotate counterclockwise in FIG. When the planting clutch 23 is operated in the disconnected state, the reciprocating lateral feed drive of the seedling platform 11 and the rotational drive of the rotary case 7 are stopped, and the rotating body 62 (the leveling device 54) is stopped.

  In this case, the rotating body 62 (leveling device 54) is driven to rotate at a speed higher than the traveling speed of the machine body (the rotating body 62 (leveling device 54) than the peripheral speed of the outer peripheral portion of the right and left rear wheels 2). Is driven to rotate so that the peripheral speed of the outer peripheral portion becomes high). Thereby, the field G in front of the planting arm 8 is leveled (scraped) by the rotating body 62 (leveling device 54), and mud scattered backward from the rotating body 62 (leveling device 54) It is stopped by covers 84 and 60.

[7]
Next, the raising / lowering drive structure of the leveling apparatus 54 is demonstrated.
As shown in FIGS. 2, 3, and 8, a bracket 26 a is fixed to the left support frame 26, and a support member 68 configured by bending a plate is bolted to the bracket 26 a of the left support frame 26. The operation shaft 69 is rotatably supported by a boss portion 68a (located on the left and right center side of the left support frame 26) fixed to the support member 68. A fan gear 70 and an operation arm 71 (corresponding to an elevating mechanism) are fixed to the operation shaft 69 on the rear side of the support member 68 (on the seedling bed 11 side). An operation arm 71 projects from between the bracket 26 a of the left support frame 26 and the support member 68, and the left linkage member 72 is connected across the operation arm 71 and the transmission case 56. A left spring 82 is connected across the bracket 26 c fixed to the left support frame 26 and the transmission case 56, and the transmission case 56 is urged upward by the left spring 82.

  As shown in FIGS. 2, 3, and 8, the electric motor 73 and the speed reduction mechanism 74 are fixed at the rear side (the seedling bed 11 side) of the support member 68, and the pinion gear 74 a of the speed reduction mechanism 74 is the sector gear 70. The electric motor 73 and the speed reduction mechanism 74 are covered with a bag-like cover 75. At the front side of the support member 68, the control device 40 covered with the cover is fixed, and a potentiometer 76 for detecting the angle of the operation shaft 69 is fixed, and the detection value of the potentiometer 76 is input to the control device 40. Yes.

  As shown in FIGS. 2, 3, and 8, a bracket 26 b (located on the left and right center side of the right support frame 26) is fixed to the right support frame 26, and the front and rear shafts of the bracket 26 b of the right support frame 26 Around the core P6, a "<"-shaped operation arm 77 (corresponding to an elevating mechanism) is supported in a swingable manner in a front view (see FIG. 3). An operation rod 78 is connected across the bracket 70 a fixed to the sector gear 70 and the end of the operation arm 77, and the right linkage member 72 extends across the end of the operation arm 77 and the support arm 58. Is connected. A right spring 82 is connected across the bracket 26d fixed to the right support frame 26 and the support arm 58, and the support arm 58 is urged upward by the right spring 82.

As shown in FIGS. 2, 3, and 8, when the sector gear 70 is driven to rotate counterclockwise in FIG. 8 by the electric motor 73 and the speed reduction mechanism 74, the operation arm 71 is driven upward, The transmission case 56 is raised by the linkage member 72. The operation arm 77 is rotationally driven in the clockwise direction in FIG. 4 by the fan gear 70 via the operation rod 78, and the support arm 58 is raised by the right linkage member 72. Thereby, the leveling device 54 rises.
Conversely, when the sector gear 70 is rotationally driven in the clockwise direction in FIG. 8 by the electric motor 73 and the speed reduction mechanism 74, the operation arm 71 is driven downward, and the transmission case 56 is lowered by the left linkage member 72. . The operation arm 77 is driven to rotate counterclockwise by the fan-shaped gear 70 via the operation rod 78, and the support arm 58 is lowered by the right linkage member 72. Thereby, the leveling device 54 descends.

  As shown in FIG. 11, even when the seedling planting device 5 (center float 9, right and left side floats 10) contacts the surface G, the rotating body 62 (leveling device 54) does not contact the surface G. When A3 is set and the seedling planting device 5 (center float 9, right and left side float 10) contacts the surface G, the work position A4 where the rotating body 62 (leveling device 54) also contacts the surface G is set. The leveling device 54 moves up and down in the range of the upper position and the work positions A3 and A4.

  As shown in FIGS. 3 and 4, the operating arm 71 and the bracket 26c of the left support frame 26 are located above the transmission case 56 on the left and right center side with respect to the transmission case 56, and the operation arm 77 and the right support frame. 26 brackets 26 d are located above the support arm 58 and on the left and right center sides of the support arm 58. As a result, the left linking member 72 and the left spring 82 are extended obliquely outward and downward to the left from the operation arm 71 and the bracket 26c of the left support frame 26, and the operation arm 77 and the right support frame 26 are From the bracket 26d, the right linking member 72 and the right spring 82 are extended obliquely outward and downward to the right.

  As shown in FIGS. 3 and 4, there is a relatively large space on the lateral outside of the upper part of the operation arm 71 and the left linkage member 72 and on the lateral outside of the upper part of the operation arm 77 and the right linkage member 72. ing. As a result, when the right and left markers 83 are operated in the retracted posture, even if the rotating body 83b of the right and left markers 83 is turned sideways, the upper portions of the operation arm 71 and the left linkage member 72, the operation arms 77 and the upper part of the right linkage member 72 and the upper part of the right and left springs 82 do not come into contact with the arm part 83a and the rotating body 83b of the right and left markers 83.

  The state shown in FIG. 12 is a state in which the right and left markers 83 are held by hook-like holding members 85 fixed to the right and left support frames 26 (when moving on the road or the like). Further, the right and left markers 83 are in a state of being positioned on the left and right center side (left side in FIG. 12). Even in a state where the right and left markers 83 are held by the holding member 85, the upper portions of the operation arm 71 and the left linkage member 72, the upper portions of the operation arm 77 and the right linkage member 72, and the upper portions of the right and left springs 82, The arm part 83a and the rotating body 83b of the right and left markers 83 do not come into contact with each other.

  As shown in FIGS. 3 and 4, the control device 40, the electric motor 73, and the speed reduction mechanism 74 are provided on the same left side (left support frame 26) as the transmission case 56. And the speed reduction mechanism 74 is located on the left and right center sides of the left support frame 26 and between the right and left support frames 26 (between the left support frame 26 and the support member 19 (support arm 29)). positioned.

[8]
Next, leveling control of the leveling device 54 will be described.
As shown in FIGS. 3, 5, and 11, a potentiometer 44 is fixed to the support frame 18, and a linkage arm 41 c fixed to the support shaft 41 is connected to a detection unit of the potentiometer 44. An angle is detected. The detection value of the potentiometer 44 is input to the control device 40, and the control device 40 can recognize the planting setting height A1 (setting depth) based on the detection value of the potentiometer 44. The potentiometer Based on the detected value of 76, the height of the leveling device 54 with respect to the seedling planting device 5 (planting set height A1 (set depth)) can be recognized.

  As shown in FIG. 11, the leveling set height A2 (leveling depth), which is an appropriate height at the working position A4, is set in the control device 40 for leveling (scraping) by the rotating body 62 (leveling device 54). Yes. As a result, as described in [3] above, when the planting set height A1 (set depth) is set (changed) by the planting depth lever 42, based on the detection values of the potentiometers 44 and 76, By the control device 40, the height of the leveling device 54 with respect to the seedling planting device 5 (planting set height A1 (set depth)) becomes the leveling set height A2 (leveling depth) at the work position A4. The electric motor 73 is operated and the leveling device 54 is moved up and down.

  As shown in the preceding item [3] and FIG. 11, when the seedling planting device 5 is driven up and down by the hydraulic cylinder 4 and the planting set height A1 (set depth) is maintained (seedling planting device 5 ( When the planting depth of the seedling by the planting arm 8) is maintained at the set depth), the leveling device 54 is raised and lowered together with the seedling planting device 5, and the seedling planting device 5 (planting set height) The height of the leveling device 54 with respect to A1 (set depth) is maintained at the leveling set height A2 (leveling depth) at the work position A4.

As shown in FIGS. 3 and 11, a potentiometer type dial setting device 79 is provided on the support member 68, and a setting signal of the dial setting device 79 is input to the control device 40, and the level setting is performed by the dial setting device 79. Height A2 (leveling depth) can be adjusted to the low side (deep side) and the high side (shallow side).
When the dial setter 79 is operated to the standard position, the leveling set height A2 (leveling depth) is not changed. With respect to the amount of change of the planting setting height A1 (setting depth) when the planting depth lever 42 is operated by one scale of the lever guide 43, the dial setting device 79 is set to the low side (deep side) and the high side. By operating to the (shallow side), the leveling set height A2 (leveling depth) is reduced to a range (about 150%) that exceeds the change amount of the planting setting height A1 (set depth) at the maximum. It can be changed to the side (deep side) and the high side (shallow side).

  As shown in FIGS. 3 and 11, a push-on / push-off operation switch 80 is provided in the support member 68, and an operation signal of the operation switch 80 is input to the control device 40. A limit switch 81 for detecting that the elevating operation lever 53 is operated to the planting position is provided, and a detection signal of the limit switch 81 is input to the control device 40, and the planting and fertilization clutch 23 is transmitted by the limit switch 81. , 37 are recognized for transmission and shut-off states.

  As shown in FIG. 11, when the operation switch 80 is operated to the ON position, when the elevating operation lever 53 is operated to the planting position (the planting and fertilizing clutches 23 and 37 are operated to the transmission state). The electric motor 73 is operated by the control device 40, and the leveling device 54 is lowered to the work position A4. When the raising / lowering operation lever 53 is operated to the lowered position, the neutral position, and the raised position (when the planting and fertilizing clutches 23 and 37 are operated in the disconnected state), the electric motor 73 is operated by the control device 40 and the leveling is performed. The device 54 is raised to the upper position A3.

  As shown in FIG. 11, when the operation switch 80 is operated to the OFF position, regardless of the lifting operation lever 53 (regardless of the transmission and cut-off state of the planting and fertilization clutches 23 and 37), the control device 40 The electric motor 73 is operated, and the leveling device 54 is raised to the upper position A3. For example, when the center float 9 and the right and left side floats 10 are in contact with the surface G, and the center float 9 and the right and left side floats 10 turn while leveling the surface G (sliding turn). Thus, it is effective to operate the operation switch 80 to the OFF position.

[9]
Next, the conveyance hose 22 will be described.
As shown in FIGS. 1, 2, 3, and 10, the transport hose 22 is composed of a first hose portion 22a and a second hose portion 22b. The second hose portion 22b of the transport hose 22 is made of a translucent hard resin (not bendable) and is formed in a round pipe shape, and the lower portion of the second hose portion 22b of the transport hose 22 is connected to the groove generator 16, The upper part of the second hose portion 22 b of the transport hose 22 is fixed to the support frame 28.

  As shown in FIGS. 1, 2, and 3, the first hose portion 22 a of the transport hose 22 is configured as a semi-transparent resin bellows-like bendable (flexible) hose. The upper part (front part) of the first hose part 22 a is connected to the feeding part 14, and the lower part (rear part) of the first hose part 22 a of the transport hose 22 is connected to the upper part of the second hose part 22 b of the transport hose 22. Yes.

  As shown in FIGS. 3 and 10, the support member 86 is configured to bend the wire to have two loop portions, the support member 86 is fixed to the support arm 29, and the two transport hoses on the center side 22 first hose portions 22 a are passed through the right and left loop portions of the support member 86. In this case, as shown in FIGS. 2, 3, 4, and 10, the two transport hoses 22 on the center side are located on the right and left lateral outer sides of the support member 19 and the support arm 29. Arranged along the front. The connection portions of the first and second hose portions 22a and 22b of the two transport hoses 22 on the center side are located below the operation rod 78, and the first hose portions of the two transport hoses 22 on the center side 22a is located in front of the operation rod 78 (between the operation rod 78 and the rear part of the machine body).

  As shown in FIGS. 2, 3, and 4, the first and second hose portions 22 a and 22 b of the two right and left transfer hoses 22 are formed on the two transfer hoses 22 on the center side in a side view (see FIG. 2). The first and second hose portions 22 a and 22 b are arranged at substantially the same position, and are arranged along the front surface of the seedling bed 11. The first and second hose portions 22a and 22b of the two right and left transfer hoses 22 are disposed between the right and left linkage members 72 and the seedling placing base 11 (the seedling planting device 5), In a front view (see FIG. 3), the first and second hose portions 22a and 22b of the two right and left transfer hoses 22 and the right and left linkage members 72 intersect each other.

  As shown in FIGS. 3 and 4, the support member 87 is configured to bend the wire to have one loop portion, and the support member 87 is fixed to the right and left side portions of the support frame 28, and The first hose portions 22 a of the left two transport hoses 22 are passed through the loop portion at the top of the support member 87. Thereby, the support member 87 prevents interference between the first hose portions 22a of the two right and left transport hoses 22 and the right and left linkage members 72.

  As shown in FIGS. 1, 3 and 4, right and left guard members 65, which are L-shaped and round bar-shaped in plan view, rotate around the horizontal axis P7 of the support frames 55 and 57, and It is slidably supported along. The state shown by the two-dot chain line in FIGS. 1, 3, 4 and 2 and 12 is a state in which the right and left guard members 65 are fixed to the first posture A5. In the first posture A5, the right and left guard members 65 are positioned on the right and left lateral outer sides in the vicinity of the base (lateral axis P5) of the transmission case 56 and the support arm 58, and the right and left guard rails 65 Located on the laterally outer side, the right and left guard members 65 protect the transmission case 56 and the support arm 58 in the vicinity of the base (lateral axis P5) and the right and left sides of the guide rail 38.

  In this case, as shown in the preceding item [8] and FIG. 2, even if the leveling device 54 is raised to the upper position A3 by the operation switch 80 and the lifting operation lever 53, the middle portion of the transmission case 56 and the support arm 58 is moved to the right and left. It is configured not to interfere with the left guard member 65 (a recess 56a for avoiding interference with the left guard member 65 is formed in the upper part of the intermediate portion of the transmission case 56).

1, 3 and 4 and FIGS. 2 and 12 are released from fixation in the first posture A5, and the right and left guard members 65 are rotated downward around the horizontal axis P7. It pushes in to the left-right center side along the core P7, and it fixes with 2nd attitude | position A6 shown as the continuous line of FIG. In the second posture A6, the right and left guard members 65 are extended downward so as to intersect the right and left lateral outer sides of the intermediate portions of the transmission case 56 and the support arm 58 from the upper side to the lower side, Since the leveling device 54 of A4, the center float 9, the right and left side floats 10, and the grooving device 16 are protruded downward, they are in a state of entering the left and right central sides of the first posture A5.
Thus, by lowering the seedling planting device 5, the seedling planting device 5 can be supported on the ground by the right and left guard members 65, and the right and left guard members 65 are supported by the seedling planting device. Can be used as 5 stands.

[Another Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention], the electric motor 73 and the speed reduction mechanism 74 are abolished, and a lift lever (not shown) that is artificially operated is fixed to the fan-shaped gear 70 to move up and down. You may comprise so that the leveling apparatus 54 may be raised / lowered by operation of a lever.
In the above-mentioned [Best Mode for Carrying Out the Invention], as a paddy field work device and a ground work device, a fertilizer application device, a direct seeding device, a chemical spraying device, a rice bran spraying device, and a grooving device for supplying paste-like fertilizer to the rice field (Grooves for non-tillage rice planting), grooving machines (grooves for drainage), and sheet laying devices (laying while rolling roll sheets (for preventing weeds) on the rice field) .

Overall side view of riding rice transplanter Side view of seedling planting device and leveling device Front view of seedling planting device and leveling device Top view of seedling planting device and leveling device Top view near center float, right and left side floats Side view near the center float and planting depth lever Front view near the left side of the front part of the center float Front view of the left support frame, electric motor, reduction mechanism, and fan gear Perspective view of rotating body Side view near the two transfer hoses on the center side The figure which shows the cooperation state of a seedling planting device and a leveling device Front view of left side of seedling planting device and leveling device with right and left guard members set to second posture

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 Paddy field work apparatus 13 Storage part 14 Feeding part 16 Supply part 22 Conveyance hose 54 Ground work apparatus 71,77 Lifting mechanism 72 Linking member G Tab surface

Claims (1)

Support the paddy field work device at the rear of the machine body, support the ground work device to the paddy field work device so that it can be raised and lowered,
In the part of the paddy field work device above the right side and the left side of the ground work device, the part of the paddy field work device on the left and right center side of the right side and left side of the ground work device is provided with a lifting mechanism,
Connecting a linkage member across the right side of the ground work device and the lifting mechanism, connecting a linkage member across the left side of the ground work device and the lifting mechanism;
By moving and driving the linkage member upward and downward by the lifting mechanism, the ground work device is configured to be movable up and down,
The storage unit for storing the agricultural supply body, the agricultural supply body of the storage unit is provided in the machine body, the supply unit for supplying the agricultural supply body to the rice field is provided in the paddy field work device,
The paddy field machine which has arrange | positioned the conveyance hose connected over the said delivery part and a supply part between the said linkage member and the paddy field work apparatus.

Images