JP4769212B2 - Paddy field machine - Google Patents

Description

  The present invention relates to a paddy field work machine (a riding type rice planting machine, a riding type direct seeding machine, or the like) that supports a paddy field working device (such as a seedling planting device or a direct sowing device) at the rear of the machine body so as to be movable up and down.

  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) is supported so as to be movable up and down, and a leveling device (corresponding to a ground work device) (53 in FIGS. 1, 2, and 4 of Patent Document 1) is provided between the seedling planting device and the body, There is one provided with a raising / lowering mechanism (55, 56, 58 in FIGS. 2, 3, and 7 of Patent Document 1) on the front side of the seedling planting device. Thereby, seedlings can be planted by the seedling planting device while leveling the surface with the leveling device, and the height (leveling depth) of the leveling device can be changed by the lifting mechanism.

  In Patent Document 1, a hopper (corresponding to a storage part) that stores powdered fertilizer (corresponding to an agricultural supply body) (12 in FIG. 1 of Patent Document 1) and a feeding part that feeds the fertilizer of the hopper (Patent Document 1). 13) of FIG. 1 is provided in the machine body, and a grooving device (corresponding to a supply unit) for supplying fertilizer to the rice field (15 of FIG. 1 and FIG. 2 of Patent Document 1) is provided in the seedling planting device, and the feeding unit A conveying hose (16 in FIG. 1 and FIG. 2 in FIG. 2) is connected across the groove forming 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.

In general, in a riding type rice transplanter, when one planting process is completed and the shoreline is reached, the seedling planting device is greatly raised from the surface and swiveled at the shoreline, and then the seedling planting device is placed on the surface. And move on to the next planting process. In order to perform such large raising and lowering of the seedling planting device, the transport hose is configured to have flexibility to bend freely.
In the case of including such a hopper, a feeding portion, a grooving device, and a conveying hose, in Patent Document 1, a lifting mechanism (55, 56, 58 in FIG. 2 of Patent Document 1) and a seedling table (Patent Document) 1 and 10) of FIG. 2 of 1 is arrange | positioned the conveyance hose (16 of FIG. 2 of patent document 1).

JP-A-2005-341881

In patent document 1, since the conveyance hose is arrange | positioned between the raising / lowering mechanism of the leveling apparatus and the seedling platform, the part of the conveyance hose between the raising / lowering mechanism of the leveling apparatus and the groove generator is bent. Cannot be configured (to avoid interference between leveling device lifting mechanism and seedling platform and transfer hose). Since the position of the elevating mechanism of the leveling device is relatively high, the portion of the transport hose between the elevating mechanism of the leveling device and the grooving device is relatively long.
As a result, in the entire length of the transport hose from the feeding portion to the grooved portion, the proportion of the portion that cannot be bent (portion between the lifting mechanism of the leveling device and the grooved device in the transport hose) becomes large. The bendable part of the transport hose is shortened.

  When the portion that can be bent in the transport hose is shortened in this way, when the seedling planting device is greatly lifted and lowered, the bendable portion in the transport hose cannot absorb the large lift of the seedling planting device, and the bending in the transport hose There is a possibility that a portion that is bent at an acute angle locally occurs in the portion that can be formed, which may lead to breakage of the transport hose or clogging of fertilizer.

  The present invention provides an agricultural supply body to a supply unit in a paddy field machine including a ground work device between the paddy field work device and the machine body, and a lifting mechanism for raising and lowering the ground work device on the front side of the paddy field work device. An object of the present invention is to configure the conveyance hose so that a portion that is bent acutely and locally is not generated.

[I]
(Constitution)
The first feature of the present invention resides in the following configuration in a paddy field work machine.
A paddy field work device is supported at the rear part of the machine so that it can be raised and lowered. A ground work device is provided between the paddy field work device and the machine body, and a lifting mechanism for raising and lowering the ground work device is provided on the front side of the paddy field work device. The airframe includes a storage unit that stores the agricultural supply body and a feeding unit that feeds out the agricultural supply body of the storage unit, and includes a supply unit that supplies the agricultural supply body to the rice field. A transport hose is connected across the feeding unit and the supply unit, and the lifting mechanism includes lifting control rods linked to the lateral side portions in the lateral direction of the ground work device on both the left and right sides, and on both the left and right side portions. It is equipped with an interlocking operation rod that interlocks and operates so that the ascending / descending operation rods are interlocked with each other, and the interlocking operation rod and the lifting operation rods on both the left and right sides are connected to each other. coordinated so as to be positioned on the rear side in the vehicle body longitudinal direction than the lift operating rod, to place the transport hose of the left and right middle side in front of the interlocking operation rod.

(Function)
Since the distance between the operation rod for interlocking of the lifting mechanism of the ground work device and the paddy field work device is relatively narrow, the portion of the transfer hose between the operation rod for interlocking of the lifting mechanism of the ground work device and the supply section is bent. In contrast, the front side of the interlocking operation rod of the lifting mechanism of the ground work device is a relatively large space (between the operation rod for interlocking of the lifting mechanism of the ground work device and the rear part of the aircraft). It has become.
According to the first feature of the present invention, since the transport hose is arranged on the front side of the interlocking operation rod of the lifting mechanism of the ground work apparatus, the front side of the interlocking operation rod of the lifting mechanism of the ground work apparatus is a relatively large space. (Between the operation rod for interlocking of the lifting mechanism of the ground work device and the rear part of the machine), it prevents interference between the operation rod for interlocking of the lifting mechanism of the ground work machine and the rear part of the machine and the transport hose. There is no need to consider it.

Thereby, according to the 1st characteristic of this invention, even if it has a part which cannot be bent in a conveyance hose in order to avoid interference with the operation rod for interlocking of the raising / lowering mechanism of a ground work apparatus, and the rear part of an airframe, it is bent in a conveyance hose. There is no need to unnecessarily lengthen the part that cannot be done (it can be made relatively short), and the part that can be bent can be made long in the entire length of the transport hose from the feeding part to the supply part. .
When the bendable portion of the transport hose becomes longer in this way, when the ground work device is lifted up and down, the bendable portion of the transport hose is bent with a large radius as a whole, and the large lift of the ground work device is absorbed. Therefore, the possibility that a portion that can be bent at an acute angle locally occurs in a portion that can be bent in the transport hose is reduced.

(The invention's effect)
According to the first feature of the present invention, in the paddy field machine provided with the ground work device between the paddy field work device and the machine body and provided with a lifting mechanism for raising and lowering the ground work device on the front side of the paddy field work device, It is possible to reduce the possibility that a part that bends sharply and locally in the transport hose supplied to the supply unit can be generated, and it is possible to prevent breakage of the transport hose and clogging of fertilizer. It was possible to improve the durability and the supply performance of agricultural supply bodies.

[II]
(Constitution)
The second feature of the present invention resides in the following configuration in the paddy field working machine of the first feature of the present invention.
A supply unit is provided in the ground work apparatus.

(Function)
According to the second feature of the present invention, the “action” described in the preceding item [I] is provided in the same manner as the first feature of the present invention, and in addition to this, the following “action” is provided.
As described in the preceding section [I], since the ground work device is provided between the paddy field work device and the machine body, and the lifting mechanism for raising and lowering the ground work device is provided on the front side of the paddy field work device, the machine body and the paddy field work Without being affected by the change in the height of the device, it is possible to change the height of the ground work device with respect to the surface or to maintain the set height.

  According to the second feature of the present invention, since the ground working device is provided with the supply unit, the height of the ground working device with respect to the field surface is changed or maintained at the set height by the lifting mechanism of the ground working device as described above. By doing so, the supply depth of the agricultural supply body from the supply section to the rice field can be changed or maintained at the set depth.

(The invention's effect)
According to the second feature of the present invention, the “effect of the invention” described in the preceding item [I] is provided in the same manner as the first feature of the present invention. In addition, the following “effect of the invention” is provided. ing.
According to the second feature of the present invention, it is possible to change the supply depth of the agricultural supply body from the supply section to the rice field or to maintain the set depth by effectively using the lifting mechanism of the ground work device. As a result, the supply performance of the agricultural supply body could 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 includes one feed case 17, two transmission cases 6, a pair of rotation cases 7 that are rotatably supported at the rear of the transmission case 6, A pair of planting arms 8 provided at both ends of the rotating case 7, a center center float 9 and a side float 10, and a seedling platform 11 which is provided with four seedling mounting surfaces and is reciprocally laterally driven in the horizontal direction. It is prepared for. A feed case 17 and a transmission case 6 are fixed to a support frame 18 arranged in the left-right direction, and a front / rear shaft core P1 below a support member 19 connected to the rear part of the link mechanism 3 (see FIGS. 2 and 3). 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 front and rear axis P1).

  As shown in FIGS. 2, 3, and 4, a guide rail 38 is supported on the transmission case 6 in the left-right direction, and a lower portion of the seedling support 11 is supported along the guide rail 38 so as to be laterally movable. The support frame 26 is fixed to the right and left side portions of the support frame 18 and extends upward, and the support frames 20 and 28 are fixed over the upper and lower portions of the right and left support frames 26. 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 section 14 is provided, and a blower 15 is provided on the lateral side of the feeding section 14. Two groovers 16 (corresponding to the supply section) are fixed to the center float 9, one groover 16 is fixed to the side float 11, and four groovers 16 are provided. Four transport hoses 22 are connected across the feeding section 14 and the groove generator 16.

[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. Is transmitted to the rotary case 7 via the transmission chain 30 of the feed case 17, the transmission shaft 31 installed over the transmission case 6, the input shaft 32 of the transmission case 6, the transmission chain 33, the minority number clutch 34 and the drive shaft 35. Is done. A cylindrical cover 36 is fixed over the feed case 17 and the transmission case 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 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 section 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 rear portions of the center float 9 and the side float 10 are swingably supported up and down around the horizontal axis P3 at the rear end of the support arm 41a of the support shaft 41. . 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 and side float 10) is moved up and down. By changing, 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 with the lever guide 43, the position of the horizontal axis P3 (center float 9 and side float 10) can be fixed, and the planting setting height A1 (setting depth) can be set.

As shown in FIG. 5, 6 and 7, the bracket 9a is fixed to the left side of the front end portion of the center float 9 is connected to the operating rod 45 to the bracket 9a of the center float 9, the operating rod 45 is a support frame 18 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 4 of the bracket 46, and a linkage rod 49 connected to the end of the linkage arm 48 is provided. The lower end portion of the linkage rod 49 is connected to the linkage arm 41 b that extends downward through the support 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 and side float 10) is changed by the planting depth lever 42, a new planting set height A1 (set depth) is obtained. Is set. Along with this, the attitude 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 23 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 rotating body 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. A spacer 63 is externally fitted at the center, and the position of the rotating body 62 is determined. A disk member 59 is fixed to the drive shaft 61 between the rotating body 62 and the spacer 63 and between the rotating body 62 and the transmission case 56 and the support arm 58. As shown in FIG. 9, the disk member 59 has substantially the same outer diameter as the rotating body 62, and a large number of long holes 59a are formed radially.

  As shown in FIGS. 3, 4, and 9, in many rotating bodies 62, the rotating bodies 62 are connected to the drive shaft 61 so that the phases (positions) of the arm portions 62 c (spaces 62 e) of all the rotating bodies 62 coincide. It is fixed. The right multiple rotating bodies 62 and the left multiple rotating bodies 62 separated by the spacers 63 are also configured such that the phases (positions) of the arm portions 62c (spaces 62e) of the rotating bodies 62 are the same. . All the disk members 59 are configured such that the phase (position) of the long hole 59a of the disk member 59 matches the phase (position) of the space 62e of the rotating body 62. The PTO shaft 24 is disposed at the position of the spacer 63 in a plan view (see FIG. 4), and when the seedling planting device 5 is greatly raised, the PTO shaft 24 enters between the disk members 59 and enters the rotating body 62. I try not to interfere.

  As shown in FIGS. 2, 3, and 4, a leveling device 54 is configured by the drive shaft 61, the rotating body 62 and the disk member 59, the transmission case 56, the support arm 58, and the like. A leveling device 54 is provided between the seedling planting device 5 (center float 9 and side float 10) and the airframe (rear wheel 2), and the transmission case 56 and the support arm 58 are vertically moved around the horizontal axis P5. The leveling device 54 is supported so as to be movable up and down.

  As shown in FIGS. 2 and 4, a cover 60 having a width substantially the same as the width of the leveling device 54 is fixed to the front portion of the support frame 18, and the cover 60 is located behind the leveling device 54, and the center float 9 and the side float 10 are configured to be located in front of the mud, and the mud that scatters rearward from the leveling device 54 does not accumulate on the center float 9 and the side float 10. In this case, even if the planting set height A1 (set depth) is set to the lowest position (set depth is the deepest position), the lower end of the cover 60 is prevented from contacting the bottom surface G of the cover 60. The position of is set.

  As shown in FIGS. 1, 3, and 4, a round bar-shaped guard member 65 is provided on the support frames 55 and 57 and extends rearward, and the guard member 65 includes the transmission case 56, the support arm 58, and the guide rail 38. The transmission case 56, the support arm 58, and the guide rail 38 are protected by the guard member 65. The guard member 65 is rotatably supported by the support frames 55 and 57, and the guard member 65 is changed from the rearward orientation shown in FIG. It can also be used as a stand.

[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 transmission shaft 66 and the drive shaft 61 are arranged inside the transmission case 56. A transmission chain 67 is wound around. A cylindrical cover 36 is fixed across the 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 2 is transmitted to the leveling device 54, and the rotating body 62 and the disk member 59 (leveling device 54) are 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 and the disk member 59 (the leveling device 54) are stopped. .

  In this case, the rotator 62 and the disk member 59 (grading device 54) are rotationally driven at a speed higher than the traveling speed of the machine body (the rotator 62 and the peripheral speed of the outer peripheral portion of the right and left rear wheels 2). (It is rotationally driven so that the peripheral speed of the outer peripheral part of the disk member 59 (grading device 54) becomes high). Thereby, the field G in front of the planting arm 8 is leveled (scraped) by the rotating body 62 and the disk member 59 (grading device 54), and is rearward from the rotating body 62 and the disk member 59 (grading device 54). The scattered mud is stopped by the cover 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 fixed to the support member 68. A fan-shaped gear 70 (equivalent to an elevating mechanism) and an operating arm 71 (equivalent to an elevating mechanism) are fixed to an operation shaft 69 on the rear side of the support member 68 (on the seedling bed 11 side), and the left support frame The operating arm 71 protrudes from between the bracket 26 a of the 26 and the support member 68, and the left operating rod 72 (corresponding to the lifting operating rod) is connected across the operating arm 71 and the transmission case 56.
The left operating rod 72 is provided so as to function as a part of an elevating mechanism by linking the transmission arm 56 and the operating arm 71 as a left lateral side portion of the leveling device 54 as a ground working device. ing.

As shown in FIGS. 2, 3, and 8, an electric motor 73 (equivalent to an elevating mechanism) and a speed reducing mechanism 74 (equivalent to an elevating mechanism) are fixed on the rear side of the support member 68 (the seedling table 11 side). The pinion gear 74 a of the speed reduction mechanism 74 is engaged with the fan-shaped gear 70, and 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, the bracket 26 b is fixed to the right support frame 26, and the front and rear axis P <b> 6 of the bracket 26 b of the right support frame 26 is viewed in front view (see FIG. 3). A letter-shaped operation arm 77 (corresponding to an elevating mechanism) is swingably supported. An operation rod 78 (corresponding to an elevating mechanism) is connected between the bracket 70 a fixed to the sector gear 70 and the end of the operation arm 77, and extends between the end of the operation arm 77 and the support arm 58. The right operating rod 72 (corresponding to a lifting operating rod) is connected.
The right operating rod 72 functions as a part of an elevating mechanism by linking a support arm 58 serving as a right side portion of the leveling device 54 as a ground working device and the right operating arm 77. Is provided.
An operation rod 78 (corresponding to an interlocking operation rod) provided between the bracket 70a fixed to the sector gear 70 and the end of the operation arm 77 functions as a part of the lifting mechanism. Yes, it has a role as means for operating the left and right operation rods 72, 72 as lifting operation rods in conjunction with each other.

As shown in FIGS . 2, 3 , and 8 , when the sector gear 70 is driven to rotate counterclockwise in FIG. 3 and 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 left operating rod 72. The operation arm 77 is rotationally driven in the clockwise direction in FIG. 3 by the fan-shaped gear 70 via the operation rod 78, and the support arm 58 is raised by the right operation rod 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 operation rod 72. To do. 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 operation rod 72. Thereby, the leveling device 54 descends.

  In this case, as shown in FIG. 11, even if the seedling planting device 5 (center float 9 and side float 10) contacts the surface G, the rotating body 62 and the disk member 59 (leveling device 54) contact the surface G. When the upper position A3 and the seedling planting device 5 (center float 9 and side float 10) do not touch the surface G, the work position A4 where the rotating body 62 and the disk member 59 (leveling device 54) also contact 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.

[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 for leveling (scraping) by the rotating body 62 and the disk member 59 (leveling device 54) is the control device 40. Is set to 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.

  When the operation switch 80 is operated to the OFF position, the electric motor 73 is operated by the control device 40 regardless of the lifting / lowering operation lever 53 (regardless of the planting and fertilization clutches 23 and 37 being transmitted and disconnected). The leveling device 54 is raised to the upper position A3. For example, when the center float 9 and the side float 10 are in contact with the surface G and the center float 9 and the side float 10 are turning while leveling the surface G (sliding turn), the operation switch 80 is turned to the OFF position. It is effective to operate.

[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 82 is configured to bend the wire rod to have two loop portions, the support member 82 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 82. In this case, as shown in FIGS. 2, 3, 4, and 10, the connecting portions of the first and second hose portions 22 a and 22 b of the two transport hoses 22 on the center side are located below the operation rod 78. The first hose portions 22a of the two transport hoses 22 on the center side are located on the front side 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 22a and 22b are arranged at substantially the same position, and on the front side of the first and second hose portions 22a and 22b of the right and left two transport hoses 22 (the rear side of the machine body), Right and left operating rods 72 are disposed.

  As shown in FIGS. 3 and 4, the support member 83 is configured to bend the wire to have one loop portion, and the support member 83 is fixed to the right and left sides of the support frame 28, and The first hose portions 22 a of the left two transfer hoses 22 are passed through the loop portion at the top of the support member 83. Accordingly, the support member 83 prevents interference between the first hose portion 22a of the right and left two transfer hoses 22 and the right and left operation rods 72.

[First Alternative Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention], the grooving device 16 may be provided in the leveling device 54.
As shown in FIGS. 12 and 13, the rotating body 62 is removed from the leveling device 54 in correspondence with the position of the groover 16 (see FIG. 5) fixed to the center float 9 and the side float 11. A ring member 84 is fixed to the portion of the drive shaft 61 from which is removed. The grooving device 16 is provided with a boss portion 16a, and the boss portion 16a of the grooving device 16 is externally fitted to the ring member 84 of the drive shaft 61 so as to be relatively rotatable. ) Is supported. The lower portion of the second hose portion 22b of the transport hose 22 is connected to the groove generator 16, and the groove generator 16 is prevented from rotating by the second hose portion 22b of the transport hose 22.

  Accordingly, as described in [8] above, the dial setting device 79 adjusts the leveling set height A2 (leveling depth) to the low side (deep side) and the high side (shallow side), thereby forming the groove. The depth of penetration of the vessel 16 into the field G (fertilizer supply depth) can be changed to a low side (deep side) and a high side (shallow side).

[Second Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention] [First Alternative Embodiment], the electric motor 73 and the speed reduction mechanism 74 are abolished, and a lift lever (not shown) that is artificially operated is provided. You may comprise so that it may fix to the fan-shaped gear 70 and raise / lower the leveling apparatus 54 by operation of a raising / lowering lever.

  In the above-mentioned [Best Mode for Carrying Out the Invention] to [Second Another Embodiment of the Invention], as a paddy field work device and a ground work device, a fertilizer application device, a direct sowing device, which supplies paste-like fertilizer to the rice field, Drug spraying device and rice bran spraying device, grooving device (groove for no-tillage rice planting), grooving device (groove for drainage), sheet laying device (sheet rolled in roll shape (for weed prevention)) Laying while unfolding). Instead of supporting the ground working device on the paddy working device, the ground working device may be supported by a link mechanism (not shown) extending from the rear part of the machine body.

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 Plan view near the center float and side float Side view near the center float and planting depth lever Front view near the left side of the front end of the center float Front view of the left support frame, electric motor, reduction mechanism, and fan gear Perspective view of rotating body and disk member 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 The top view of the leveling apparatus in 1st another form of implementation of invention Longitudinal side view of the vicinity of the groove producing device according to the first embodiment of the invention

DESCRIPTION OF SYMBOLS 5 Paddy field work apparatus 13 Storage part 14 Feeding part 16 Supply part 22 Transfer hose 54 Ground work apparatus 70, 71, 72, 73, 74 , 77 , 78 Lifting mechanism
72 lifting rod
78 Interlocking operation rod G

Claims (2)

A paddy field work device is supported at the rear of the machine so that it can be raised and lowered.
A ground work device is provided between the paddy field work device and the machine body, and a lifting mechanism for raising and lowering the ground work device is provided on the front side of the paddy field work device,
A storage unit for storing the agricultural supply body and a supply unit for feeding out the agricultural supply body of the storage unit are provided in the machine body, and a supply unit for supplying the agricultural supply body to the rice field is provided, and the supply unit is provided between the supply unit and the supply unit. Connect the transfer hose,
The elevating mechanism includes elevating operation rods linked to the lateral side portions in the left-right direction of the ground work device on both left and right sides, and the elevating operation rods on the left and right side portions operate in conjunction with each other. It is equipped with an operating rod for interlocking that operates in conjunction with
The interlocking operation rod and the lifting operation rods on the left and right side portions are linked so that the interlocking operation rod is located on the rear side in the front-rear direction of the aircraft with respect to the lifting operation rods on the left and right side portions. , paddy working machine the conveyor hose of the right and left center side are then placed on the front side of the interlocking operation rod.   The paddy field machine according to claim 1, wherein the supply unit is provided in a ground work device.

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