JP2009207503A - Rice transplanter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rice transplanter compactly installing a rolling controller on the back side of a seedling table, locating a transplanting part close to a traveling vehicle, compacting and lightening the machine body. <P>SOLUTION: Provided is the rice transplanter comprising a traveling vehicle 1 mounting an engine 2, a transplanting section 15 equipped with a seedling table 16 and seedling planting claws 17, a hitch device 24 to couple the transplanting section 15 to the traveling vehicle 1 through a link mechanism 27, and a rolling controller 151 controlling the transverse inclination of the transplanting section 15, wherein the transplanter is arranged to support the rolling controller 151 on the upper end side of the hitch device 24 in a tilting posture substantially parallel to the bottom of a higher position than a longitudinal belt 123 of the bottom of the seedling table 16. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rice transplanter that includes a seedling stage and a seedling planting claw and performs seedling planting work continuously.

  2. Description of the Related Art Conventionally, a structure in which a rice planting machine is provided with a rolling control device that performs horizontal horizontal control of a planting unit is known (Patent Document 1, etc.). In the prior art, in order to improve assembly and maintenance workability, it is necessary to secure a large installation space for the rolling control device between the machine and the seedling stage.

Japanese Patent Laid-Open No. 11-289825

  In the structure of the prior art, when a large distance (gap) between the seedling platform and the rolling control device is to be secured, the planting part is greatly separated from the machine, and the entire length of the machine body becomes long. Therefore, there is a problem that it is not possible to easily reduce the size and weight of the aircraft.

  The present invention solves the above-mentioned problem, and can be installed compactly with a rolling control device on the back side of a seedling stand, can be arranged with a planting part close to a traveling vehicle, and can be reduced in size and weight. Is to provide.

  In order to solve the above-mentioned problem, a rice transplanter according to the invention described in claim 1 includes a traveling vehicle equipped with an engine, a planting unit including a seedling table and a seedling planting claw, and a link mechanism on the traveling vehicle. In the rice transplanter provided with a hitch member for connecting the planting part via a rolling control device for adjusting the right and left inclination of the planting part, a position higher than the vertical feed belt in the bottom surface of the seedling platform The rolling control device is configured to be supported on the upper end side of the hitch member in a posture inclined in a direction substantially parallel to the bottom surface.

  The invention described in claim 2 is the rice transplanter according to claim 1, wherein left and right seedling support frames are erected on a horizontal frame of the planting portion, The rolling control device is arranged close to the upper guide rail, and the hitch member, the rolling control device, one of the seedling support frames, and the lateral frame are arranged in a loop shape with a four-sided view. The rolling control device is incorporated on the back side of the seedling mounting table, and a stopper member is provided for restricting the planting part from moving down more than a predetermined level.

  According to invention of Claim 1, the traveling vehicle carrying an engine, the planting part provided with a seedling stand and a seedling planting claw, and connecting the planting part to the traveling vehicle via a link mechanism. In a rice transplanter equipped with a hitch member and a rolling control device that adjusts the horizontal tilt of the planting part, it tilts in a direction that is substantially parallel to the bottom surface of the seedling platform that is higher than the vertical feed belt. The rolling control device is configured so as to support the rolling control device on the upper end side of the hitch member in a posture that has been made, so that the dead space on the back side of the seedling stage is effectively utilized, and the rolling control device is made compact. And the planting part can be arranged close to the traveling vehicle. In addition, since the rolling control device can be supported at a predetermined height position on the upper end side of the hitch member, the rolling control device is separated by a distance necessary for ensuring the rolling performance of the rolling control device, for example, the rolling fulcrum shaft or the like. The rolling control device can be separated, and the rolling control function of the rolling control device that adjusts the inclination angle in the left-right direction of the planting part can be improved.

  According to the second aspect of the present invention, the right and left seedling support frames are erected on the horizontal frame of the planting portion, and are arranged close to the guide rail on the upper side of the vertical feed belt. A rolling control device is arranged, and the hitching member, the rolling control device, one seedling support frame and the horizontal frame are arranged in a loop shape with a four-sided front view, and the rolling control device is placed behind the seedling mounting table. While installing the control device, provided with a stopper member that restricts the planting part to move down more than a predetermined value, the rolling control device is provided separated from the rolling fulcrum shaft by an appropriate distance for rolling performance. The rolling control function of adjusting the inclination angle of the planting part in the left-right direction can be improved by the rolling control device. The support strength can be improved while the structure for supporting the rolling control device is made compact. Even if the planting part is arranged close to the traveling vehicle, the planting part and its peripheral parts can be prevented from being damaged due to the planting part moving more than a predetermined amount.

Whole side view of rice transplanter. Overall plan view of rice transplanter. The side view of a planting part. The top view of a planting part. Plane explanatory drawing of a planting part. The schematic front view of a planting part. The front view of a planting frame part. The side view of a planting frame part. Plan sectional drawing of a planting frame part. The planting frame left side top view. The right side top view of a planting frame. Cross-sectional explanatory drawing of a planting frame. The perspective explanatory view of a planting frame. Explanatory drawing of a seedling extraction part. Cross-sectional explanatory drawing of a seedling feeding case part. Explanatory drawing of a transmission shaft part. Explanatory drawing of a switching mechanism. Explanatory drawing of a planting claw unit clutch part. External appearance explanatory drawing of a planting claw unit clutch part. Explanatory drawing of a side bumper part. Front explanatory drawing of a rolling part. Side surface explanatory drawing of a rolling part. Side surface explanatory drawing of a rolling bracket part. Side surface explanatory drawing of a center return switch part. Plane explanatory drawing of a center return switch part. Explanatory drawing of a planting depth adjustment lever part. Side surface explanatory drawing of a hitch bracket part.

  Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of a riding rice transplanter, and FIG. 2 is a plan view thereof. In FIG. 1, reference numeral 1 denotes a traveling vehicle on which an operator is boarded. The front paddy field traveling wheel 6 is supported in front of the case 4 via the front axle case 5 and the rear axle case 7 at the rear of the transmission case 4 is supported by the rear wheel case 8 for paddy field traveling. The spare seedling platforms 10 are attached to both sides of the bonnet 9 covering the engine 2 and the like, and the mission case 4 and the like are covered by a vehicle body cover 11 on which an operator rides. A seat 13 is attached, and a steering handle 14 is provided at the rear of the bonnet 9 in front of the driver seat 13.

  In the figure, reference numeral 15 denotes a planting part having a seedling mounting table 16 for four-row planting and a plurality of seedling planting claws 17, and the like. The planting frame 20 is supported by the planting frame 20 through the lower rail 18 and the guide rail 19 so as to be slidable in the left and right directions, and a rotary case 21 that rotates at a constant speed in one direction is supported by the planting frame 20. A pair of nail cases 22 and 22 are arranged at symmetrical positions around the axis, and seedling planting nails 17 and 17 are attached to the tips of the nail cases 22 and 22. Further, left and right side frames 23 and 23 are erected on both the left and right ends of the planting frame 20 to support the seedling mounting table 16, and a hitch bracket 24 at the center of the planting frame 20 includes a top link 25 and a lower link 26. The hydraulic lifting cylinder 28 provided on the traveling vehicle 1 is connected to the lower link 26 via the lifting link mechanism 27, and the planting unit 15 is lifted and lowered via the link mechanism 27 when the lifting cylinder 28 is driven. When the planting part 15 is lowered, one seedling is taken out by the planting claws 17 from the seedling mount 16 that is reciprocated to the left and right, and the seedling planting operation is continuously performed.

  In the figure, 29 is a main speed change lever, 30 is a seedling lever that enables operations such as travel stop at the position where the aircraft is lowered as well as the boarding position, 31 is a planting lift lever, and 32 is a main clutch. Pedals 33 and 33 are left and right brake pedals, 34 is a center float for leveling two strips, 35 is a side float for leveling one strip, 36 is a side strip fertilizer for four strips, 37 and 37 are rear wheel 8 Auxiliary wheels to be deployed on the outside.

  The fertilizer for side strip 36 includes a fertilizer hopper 38 for feeding fertilizer, a fertilizer feed case 39 that is a fertilizer feed section for supplying fertilizer, and a flexible transport hose 41 to the side strip groover 40 of the floats 34 and 35. A blower 42 for discharging fertilizer and a cylindrical air tank 43, and a blower 42 is attached to the right end of the air tank 43, and four sets of four fertilizer feeding cases 39 are arranged above the air tank 43. The upper end of the seedling stage 16 is arranged close to the rear side of the fertilizer hopper 38.

  As shown in FIG. 3 to FIG. 12, the planting frame 20 includes left and right vertical frames 44a and 44b made of two pipes and a horizontal frame 45 made of pipe that connects the front ends of the left and right vertical frames 44a and 44b. A cruciform frame joint (cross pipe joint) 46 formed by bulging is welded and fixed to the distal ends of the vertical frames 44a and 44b, and the rotary case 21 is rotatably supported by the joint 46 via a rotary shaft 47; The left and right cruciform frame joints (cross pipe joints) 48a and 48b formed by bulging are welded and fixed to the vertical frames 44a and 44b and the horizontal frame 45, and these vertical and horizontal frames 44a, 44b, and 45 are integrally connected and lightweight. The planting frame 20 is formed at a low cost.

  In addition, a planting input shaft 49 is provided at the front end of the right frame joint 48b, and the driving force from the PTO shaft of the transmission case 4 is transmitted to the input shaft 49 via the universal joint shaft 50 and installed in the horizontal frame 45. The input shaft 49 is linked to the planting drive shaft 51 via bevel gears 49 a and 52, and the planting claw drive shaft 53 provided in the left and right vertical frames 44 a and 44 b is planted via the bevel gears 52 and 54 and the safety clutch 55. The seedling planting claw 17 is driven by being coupled to the drive shaft 51 and interlockingly coupled with the rotating shaft 47 via the bevel gears 56a and 56b and the planting claw unit clutch 57. ing.

  Further, a seedling feed shaft 58 for laterally feeding the seedling stage 16 in the horizontal direction and vertical feeding of the seedlings on the seedling stage 16 is linked to the left end of the planting drive shaft 51 through a seedling feeding case 59 made of aluminum die cast. The one end side flange portion 61 of the seedling feeding case 59 is bolted and fixed to the flange portion 60 which is the left end mounting portion of the left frame joint 48a, and the left end of the seedling feeding shaft 58 is inserted into the other end side of the case 59. A speed change mechanism 64 formed by two sets of high and low speed change gears 62 and 63 is interposed between the drive shaft 51 and the seedling feed shaft 58 in the case 59, and the left side of the seedling feed shaft 58 with respect to the substantial center of the machine body. Half of the seedling vertical feed camshaft 65 and the right half of the seedling stand horizontal feed screw shaft 66 are provided so that the seedling feed base 58 can be fed laterally when the seedling feed shaft 58 is driven to rotate at high and low speeds. It is configured to feed seedlings vertically.

  10 and 11, a planting depth adjustment fulcrum shaft 67 is pivotally supported on the lower side of the front end of the planting frame 20, and brackets 68 and 69 on the upper surfaces of the rear ends of the floats 34 and 35 are mounted. Is connected to the fulcrum shaft 67 through the planting depth adjustment links 70 and 71, and a change in the float inclination angle (planting depth) is detected by the elevating link 72 coupled to the front end of the center float 34, and the fulcrum A reference planting depth is adjusted by a planting depth adjusting lever 73 having a base end fixed to the shaft 67.

  Note that L-shaped left and right side bumpers 74 are provided on the left and right ends of the fulcrum shaft 67 so as to be foldable outwardly through mounting members 75.

  As shown in FIGS. 8, 10, and 11, the base end of the left and right marker support stay 77 that supports the left and right muscle pulling marker 76 so as to be foldable (cantilever) is welded and fixed to the outer upper surface of the left and right frame joints 48 a and 48 b. The stay 77 is formed of an L-shaped pipe, and the longitudinal stay 77a in the front-rear direction is welded and fixed to the substantially same height surface in the longitudinal direction at the joints 48a and 48b by line contact, and the lateral stay 77b is secured to the longitudinal frame. 44a and 44b are faced to the left and right outwards, the marker 76 is supported by the mounting shaft 78 at the end of the lateral stay 77b via a marker base 79, and the lateral stay 77b of the left stay 77 is fed as a seedling feeding case. The case 59 is constructed so as to be positioned in front of 59.

  Further, as shown in FIG. 13, the support stay 77 is welded at the base end of the vertical stay portion 77a to the inner surfaces of the left and right reinforcing members 80 and 81 for attaching the base ends of the left and right side frames 23 and 23 to the joints 48a and 48b. The support strength of the side frame 23 and the stay 77 is improved by being fixed.

  As shown in FIG. 14, a seedling adjustment plate 83 that adjusts the amount of seedling removal by moving the seedling extraction plate 82 at the lower end of the seedling mounting table 16 is moved up and down via a guide rod 85 on the guide member 84 of the planting frame 20. An engagement plate 87 that is movably supported and engaged with the hook 86 of the adjustment plate 83 is provided on the left and right seedling collection amount adjusting shaft 88, and is connected to the left end side of the seedling collection amount adjustment shaft 88. The operation of 89 is to adjust the amount of seedlings for one stock taken out by the seedling planting claws 17. The bearing plate 90 fixed to the seedling feeding case 59 and the right reinforcing member 81 are provided with a seedling amount adjusting shaft 88. The left and right ends of the horizontal shaft portion 88a are rotatably supported, and the left end side of the horizontal shaft portion 88a is bent forward at approximately 90 degrees outward from the seedling feeding case 59 to form a vertical axis portion 88b in the front-rear direction. Then, in front of the seedling feeding case 59, the front end of the vertical axis 88b is folded inward at approximately 90 degrees. Then, the lever mounting portion 88c is formed, and the base end of the L-shaped adjustment lever 89 is fixed to the mounting portion 88c with two bolts 91, and the tip of the lever 89 is extended upward and obliquely forward via the lever guide 92. It is provided so as to face between the left rear wheel 8 and the auxiliary wheel 37 and surrounds and protects the seedling feeding case 59 with each part 88a, 88b, 88c, and a gap 93 between the case 59 and the seedling amount adjustment shaft 88 is provided. The conveyance hose 41 is configured to be positioned.

  The hitch bracket 24 has upper and lower link shafts 94 and 95 that connect the top link 25 and the lower link 26, and a fulcrum member 96 that is held and fixed to the approximate center of the horizontal frame 45 of the planting frame 20 by a lower end of the bracket 24. And a hydraulic rolling cylinder 99 is attached to a mounting seat 98 at the upper end of the bracket 24, and the tip of the piston rod 100 of the cylinder 99 is connected to the fixed bracket 101 at the upper end of the right side frame 23. A gear pump 102 that reciprocates the double-acting cylinder 99, a reversible electric motor 103 that drives the pump 102 in the forward and reverse directions, and an oil tank 104 are integrally provided in the cylinder 99, and are fixed to the upper surface of the mounting seat 98. Rolling correction spring between the receiving plate 105 to be provided and the left and right brackets on the back side of the seedling table 16 When the pendulum type rolling sensor 108 provided on the sensor base 107 of the lateral frame 45 on the left side of the hitch bracket 24 detects the inclination of the planting portion 15, the piston rod 100 of the cylinder 99 is controlled to advance and retract. The planting part 15 is swung left and right around the fulcrum shaft 97 so that the planting part 15 is horizontally held.

  Also, a bracket 109 that is welded and fixed to the horizontal frame 45 and the right end of the fulcrum member 96 is provided, and the bracket 109 and the bracket 101 at the upper end of the right side frame 23 are reinforced and connected by an oblique stay 110, so that it has the lightest structure. Thus, the rigidity of the right side frame 23 is improved to ensure the rolling performance.

  Further, the bracket 109 is used to rotatably support substantially the middle of the seedling feed shaft 58, and the both ends of the lateral feed screw shaft 66 are interposed between the bearing plate 111 fixed to the right support stay 77 and the bracket 109 via a bearing 112. The vertical feed cam shaft 65 and the screw shaft divided into the left and right are supported and supported by connecting the right end of the vertical feed cam shaft 65 to the left end of the screw shaft 66 via the joint 113 and the left end to the seedling feed case 59. 66 has a double-supported structure to improve the support strength, and the right end of the longitudinal feed cam shaft 65 is connected to the screw shaft 66 with the same axis to improve the longitudinal feed accuracy. The cam shaft 65 is an iron hollow pipe and the screw shaft 66 is made of solid iron material. The seedling feeding case 59 and the cam shaft 65 are arranged on the left side of the center of the machine body, and the heavy screw shaft 66 is arranged on the right side. The left and right balance is made good.

  Further, a slider 114 is screwed to the screw shaft 66, and the slider 114 is connected to the seedling mounting table 16 via a slider receiver 115, so that the seedling mounting table 16 is rotated when the screw shaft 66 rotates in one direction. The vertical feed cam shaft 65 has left and right vertical feed cams 116. When the seedling stage 16 moves to the left and right moving ends, the vertical feed cam 116 contacts the driven cam 117 in one direction. A longitudinal feed belt 123 wound around the longitudinal feed rollers 121 and 122 of a pair of upper and lower roller shafts 119 and 120 provided on the lower end side of the seedling stage 16 by rotating the longitudinal feed roller shaft 119 in one direction via the clutch 118. It is comprised so that it may move to the lower end direction for 1 seedling.

  As shown in FIGS. 15 to 17, the frame joint 48 a for connecting the seedling feeding case 59 is provided with a flange portion 60 for attaching and fixing the seedling feeding case 59 on one end side of the frame joint 48 a, and has a fixed length from the flange portion 60. An inlay fitting portion 124 that fits to the outer end of the frame joint 48 a that protrudes is provided on the inner surface of one side of the seedling feeding case 59, and a tapered surface 125 is formed on the outer end of the fitting portion 124. Is interposed between the tapered surface 125 and the joint 48a so that the airtightness between the joint 48a and the case 59 can be maintained by a simple and low-cost means when the flanges 60 and 61 are fixed by the bolts 127.

  The seedling feeding case 59 is provided with a transmission shaft 128 separate from the planting drive shaft 51, a spline hole 129 is formed inside the bevel gear 52, and the left end of the drive shaft 51 and the transmission shaft 128 are formed in the spline hole 129. The transmission shaft 128 is integrally connected to the drive shaft 51 by fitting with the right end so that the transmission shaft 128 can be easily and integrally removed when the seedling feed case 59 is removed.

  Further, a bearing 130 is interposed between the joint 48a and the bevel gear 52, the bevel gear 52 is rotatably supported at one end of the joint 48a, and a flange portion 60 is provided on the outer surface of the joint 48a at the outer end from the bearing 130 position. The inner diameter b of the inner peripheral surface of the joint 48a for welding the flange portion 60 is larger than the inner diameter a of the fitting surface of the joint 48a to which the bearing 130 is fitted and fixed (a <b). Even if the joint 48a is slightly deformed by welding distortion, the assembly of the bearing 130 is not adversely affected.

  Further, the seedling feeding case 59 is formed in an L shape having a vertical case portion 59a and a horizontal case portion 59b, a flange portion 61 is formed at the right end of the horizontal case portion 59b, and the switching gears 62 and 63 are formed in the vertical case portion 59a. The transmission mechanism 64 is formed by incorporating a transmission switching mechanism 131 into the lateral case portion 59b. The switching gears 62 and 63 are driven-side gears 62a and 63a that are idle-supported on the transmission shaft 128, and a longitudinal feed cam shaft 65. The switching mechanism 131 is embedded in the key groove 132 of the transmission shaft 128 and the tip thereof is selected by the force of the seat spring 133 as the key groove 134 of the gears 62a and 63a. And a shift lever 138 connected to the shift key 135 via a shift ring 136 and a shifter 137. -The left end operation portion 138a of 138 is projected to the front left side of the seedling feeding case 59, and the lateral feed speed of the high / low / second speed is switched by pushing and pulling the switching lever 138 in the left / right direction. .

  Further, the switching gears 62 and 63 are formed of a metal material such as iron in the gears 62a and 63a on the side engaged with the shift 135 and the gears 62b and 63b on the other side are formed of a resin material to reduce weight and durability. It is configured to improve both.

  As shown in FIGS. 18 and 19, the planting frame 20 is compactly assembled with the bevel gears 49a, 52, and 54 in the front frame joints 48a and 48b, and the bevel gears 56a are compactly incorporated into the rear frame joint 46. 56b and planting claw unit clutch 57 are incorporated so as to simplify the structure and reduce the cost. The planting claw unit clutch 57 has a fixed clutch portion 139 on a bevel gear 56b that is loosely supported on a rotating shaft 47. The movable clutch portion 141 is formed on the slide body 140 that is spline-fitted to the rotary shaft 47 so as to be slidable to the left and right, and the clutch portion 139 and 141 are normally coupled by pressing the slide body 140 by the clutch spring 142 (ON). And the clutch operating member 143 for retracting the sliding body 140 against the force of the spring 142 is provided with the frame joint 46. The operation member 143 is provided so as to be able to advance and retreat, and the planting claw unit clutch 57 is turned on and off by operating the clutch lever by connecting the operation member 143 to a unit clutch lever (not shown) on the back side of the seedling table 16 via a lever 144 or the like. It is configured as follows.

  As shown in FIGS. 20 (1) and 20 (2), the side bumper 74 is mounted by inserting a bumper bent vertical portion 74a vertically movable into a U-shaped mounting member 75 fixed to both ends of the fulcrum shaft 67. A compression spring 146 is interposed between the spring seat 145 of the vertical portion 74a projecting downward from the member 75 and the mounting member 75, and an L-shaped position restricting plate 147 that abuts on the left end surface and the front surface of the mounting member 75 is vertical. A stopper portion 148 that is fixed to the portion 74a and prevents the regulating plate 147 from rotating backward is provided on the mounting member 75, and the bumper horizontal portion 74b is supported at the fulcrum shaft at the contact position between the regulating plate 147 and the left end surface of the mounting member 75. 67, the seedling extraction plate 82 and the like are protected in a protruding state, while the bumper 74 is pulled up against the spring 146 and the horizontal portion 74b is rotated forward by approximately 90 degrees to thereby restrict the plate 147 and the mounting member. 7 Are configured to front and enables easily loading and storage of the transport vehicle by reducing the body width when the bumper storage position to abut.

  By the way, the inside of the seedling feeding case 59 is composed of two shafts 65 and 128, and covers the two transmission gears 62 and 63 and the simple transmission mechanism 64 and the switching mechanism 131 of the shift key 135, so that the mold cost is kept low. Low cost, small size and light weight, and the case lid 150 on the left side surface fixed to the case body via the bolt 149 is removed to facilitate the replacement and inspection of the gears 62 and 63, thereby improving maintenance. be able to.

  In addition, when using the tools for attaching and detaching the bolt 127 by making the horizontal case portion 59b into a long shape and increasing the distance between the vertical case portion 59a and the flange portion 61, the tools are used. The case 59 can be easily inserted up to the position of the bolt 127 so that the case 59 can be easily attached and detached.

  As described above, the planting portion 15 is formed by forming the planting frame 20 with a pipe frame to simplify the configuration and reduce the weight. The planting frame 20 that drives the seedling planting claws 17 and the left and right muscles And a marker support member 77 that is a marker support stay that supports the pull marker 76 in a foldable manner. The rear end of the marker support stay 77 is fixed to the planting frame 20, and the front end side is bent outward from the body. Thus, without changing the support angle of the marker 76 every time the planting depth is adjusted as in the past, and during the storing operation of the marker 76, the fertilizer that is a fertilizer applied to the seedling table 16 and the machine Without the inconvenience of bringing the marker 76 into contact with the device 36, the marker 76 is incorporated into the planting part 15 in a compact manner to shorten the front and rear length of the machine body so that the front and rear balance of the machine body is good, and the storing posture of the marker 76 is improved. Compared to the conventional posture, the muddy soil adhering to the marker 76 is prevented from scattering to the operator side during the marker storing operation, and the planting frame 20 is used by appropriately changing the bending position of the marker support stay 77. Costs can be reduced by making it possible to expand to other models and specifications that share parts.

  In addition, the planting frame 20 that drives the seedling planting claws 17, the seedling feeding case 59 that is arranged on one side of the planting frame 20 to drive the seedling feeding shaft 58, and the left and right muscle pulling marker 76 are freely foldable. A marker support stay 77 for supporting the marker support stay 77, the rear end of the marker support stay 77 is fixed to the planting frame 20, the front end is bent outward from the machine body, and the marker support stay 77 is a bent portion. By arranging the horizontal stay portion 77b in front of the seedling feeding case 59, the support angle of the marker 76 is not changed every time the planting depth is adjusted as in the conventional case, and also during the storing operation of the marker 76. In addition, without the inconvenience of bringing the marker 76 into contact with the fertilizer 36 that is installed in the machine, the marker 76 is incorporated in the planting portion 15 in a compact manner to shorten the longitudinal length of the machine body and to improve the longitudinal balance of the machine body. In both cases, the storage position of the marker 76 is set to an upright position as compared to the prior art to prevent the mud soil adhering to the marker 76 from scattering to the operator side during the marker storage operation, and the bending position of the marker support stay 77 is appropriately set. By changing, it is possible to expand to other models and other specifications that use parts such as planting frames in common, and cost reduction is achieved. Furthermore, the front of the seedling feeding case 59 is protected by the marker support stay 77 and the seedling feeding case 59 can be prevented from being damaged and durability can be improved.

  Further, a planting frame 20 that drives the seedling planting claws 17, a seedling feeding case 59 that is arranged on the left and right sides of the planting frame 20 and drives the seedling feeding shaft 58, and a seedling amount of the seedling mounting table 16 A seedling amount adjusting shaft 88 that is a seedling amount adjusting member for adjusting the seedling amount, by detouring the side from the rear of the seedling feeding case 59 and projecting the front end side of the seedling amount adjusting shaft 88 forward, The outside of the seedling feeding case 59 is protected by a seedling feeding amount adjusting shaft 88 to improve the durability of the seedling feeding case 59, and the seedling feeding amount adjusting shaft 88 is used as a guide member for the fertilizer hose 41 when the fertilizer 36 is mounted. By utilizing this, it is possible to enable good support without damage to the hose 41.

  In addition, a seedling amount adjustment lever 89 that is a seedling amount adjustment operation member for adjusting the seedling amount of the seedling mount 16 is provided on the side of the planting portion 15, and outward of the rear wheel and toward the front of the body. By projecting the operation portion of the adjustment lever 89, the amount of twisting of the operator's body from the driver's seat position is suppressed as much as possible to improve the operability of the seedling collection amount adjustment lever 89, and the amount of seedling adjustment is adjusted. The arrangement can be facilitated by increasing the degree of freedom of the rotation angle of the lever 89.

  Further, the seedling amount adjusting lever 89 is disposed between the rear wheel 8 and the auxiliary wheel 37 on the outside, so that the limited space between the rear wheel 8 and the auxiliary wheel 37 is effectively used, and the seedling amount adjusting lever 89 is used. It is possible to make it possible to easily incorporate a compact into the planting part 15.

  Furthermore, a seedling adjustment lever 89 is arranged on one side of the rear wheel 8, and a planting depth adjustment lever 73, which is a planting depth adjusting operation member that adjusts the planting depth on the other side by holding the rear wheel 8. Accordingly, these levers 73 and 89 that require an operation during work can be arranged close to the same side with respect to the center of the machine body, thereby improving their operability.

  Further, the seedling feed shaft 58 has a longitudinal feed cam shaft 65 formed on one end side and a lateral feed screw shaft 66 formed on the other end side, and the cam shaft 65 and the screw shaft 66 are arranged separately from the center of the machine. Thus, the right and left weight balance of the planting part 15 is made good and the seedling planting accuracy is stably maintained, and the longitudinal feed cam 116 of the longitudinal feed cam shaft 65 and the slider 114 of the lateral feed screw shaft 16 are moved from the center of the machine body to the left and right. These maintenances can be made easy.

  21 to 25, the rolling cylinder 99, the gear pump 102, the electric motor 103, the oil tank 104, and the like constitute a rolling control unit 151, and the hitch bracket 24 and the right side frame are provided behind the seedling table 16. 23, a unit 151 is incorporated, and the hitch bracket 24, the control unit 151, the right side frame 23, and the horizontal frame 45 are formed in a loop shape with a four-sided front view, and are separately installed such as a support arm for rolling control. It is not necessary to use the original bracket 24 and the side frame 23, and the unit 151 is assembled compactly with good support strength without protruding from the bracket 24 and the frame 23. Prevents air from getting caught and keeps performance stable It is configured to achieve.

  In addition, the control unit 151 is inclined to a forward and downward (forward tilt) posture and is arranged on the back side of the seedling stage 16 substantially along the front and rear inclination (approximately 57 degrees) of the seedling stage 16, and the top link 25 in a side view. The swing range of the unit 151 is provided so as to wrap the unit 151 and is compactly assembled between the machine and the planting part 15 to reduce the overall length of the machine body. The lower left end of the unit 151 and the mounting seat 98 A rolling bracket 152 is interposed therebetween. The bracket 152 has a gate-shaped main body portion 154 fixed to the lower left end portion of the unit 151 with a bolt 153, and a gate-shaped mounting portion 156 connected to the mounting seat 98 via a pivot shaft 155 so as to be swingable up and down. Then, the mounting portion 156 is fixed to the main body portion 154 by changing the angle of the forward downward inclination, and the unit 151 is connected to the hitch bracket 24 in the forward downward posture, and the pivot shaft 155 is closest to the hitch bracket 24. The unit 151 is provided at a position that is offset from the link shaft 94 that serves as a pivot point of the top link 25 to improve the rigidity of the bracket 24 and avoid interference with the top link 25, so that the unit 151 is compactly assembled. It is configured to improve performance.

  The hydraulic rolling cylinder 99 provided on the upper end side of the bracket 24 is disposed at a position higher than the vertical feed belt 123 on the bottom surface of the seedling stage 16 and is brought close to the guide rail 19 on the upper side of the seedling stage 16. By disposing the hydraulic rolling cylinder 99 at a high position on the back side of the seedling table 16, the hydraulic rolling cylinder 99 and the fulcrum shaft 97 are separated from each other by an appropriate distance to ensure the rolling performance. Since the control unit 151 is provided on the hitch bracket 24 in a posture that substantially follows the front-back inclination of the seedling stage 16, even if the control unit 151 is disposed on the upper end side of the hitch bracket 24, the front and rear postures are low. The seedling mounting table 16 can be disposed close to the traveling vehicle 1 while avoiding interference with the control unit 151.

  24 and 25, a central return switch 157 for detecting the central return during the rolling control of the planting part 15 is installed on the switch base 158 below the tip of the rolling cylinder 99, and the switch base 158 has an arm A switch operation arm 161 that is swingably supported via a shaft 159 and a torsion spring 160, and an arm operation plate 162 that fixes a proximal end to the bracket 101 and extends a distal end side to the vicinity of the arm 161, are planted. When the portion 15 rotates from the substantially horizontal to the right-down state about the fulcrum shaft 97, the operating plate 162 is in a free state and the arm 161 is brought into contact with the actuator 157a of the switch 157 with the spring 160 force to turn on the switch 157. On the other hand, when the planting part 15 rotates from a substantially horizontal state to an upper right state, the tip of the operating plate 162 is brought into contact with the arm 161. The switch 157 is turned off against the force of the spring 160 to turn off the switch 157. When the planting part 15 returns to the center from the right-down state, the switch 157 is turned off from the upper-right state. When returning to the center, the switch is turned from OFF to ON, and the center return (horizontal) of the planting unit 15 by the switch 157 is detected. In the case of this configuration, the switch base 158 on the non-control side is provided with both the switch 157 and the operation arm 161, so that the mounting accuracy can be improved and the performance of the switch 157 can be stably maintained and the durability can be improved. .

  As shown in FIG. 26, heavy objects such as a planting depth adjusting lever 73, a seedling amount adjusting lever 89, and related accessories are arranged on the left side of the hitch bracket 24 with the fulcrum shaft 97 as the center. The balance with the rolling control unit 151 disposed on the right side is substantially balanced, and the center of gravity of the planting part 15 is also located near the center. The planting depth adjusting lever 73 is provided with an adjusting plate 163 that is detachably connected. It is linked to a speed-synchronized planting depth correction motor 166 via a screw coupling body 164 and a screw shaft 165 to manually adjust the planting depth, and when the traveling speed changes, planting is performed with the correction motor 166. The depth reference correction is automatically performed.

  Further, as described above, in the configuration in which heavy objects such as the planting depth adjusting lever 73 and the seedling harvesting amount adjusting lever 89 are arranged on the left side of the hitch bracket 24, the control unit 151 is not installed (no horizontal control). The planting input shaft 49 installed on the right frame joint 48b rotates counterclockwise (in the direction of the arrow) when viewed from the front in FIG. Even if a moment in the left-down direction) is generated, a counterweight is generated by a heavy object such as the levers 73 and 89 on the opposite side so that the moment is canceled and the right and left balance of the planting portion 15 is achieved. Can keep good.

  As shown in FIG. 27, the U-shaped left and right frames 26a at the rear end of the lower link 26 are integrally connected by a reinforcing pipe 167 to improve rigidity, and a triangular shape is formed at a substantially middle portion of the front side surface of the hitch bracket 24. The lower movement stopper member 168 is fixed, and when the planting portion 15 moves down more than necessary, the stopper member 168 is brought into contact with the reinforcing pipe 167 to restrict further downward movement of the planting portion 15 and to plant the planting portion 15. It is configured to prevent inconveniences such as damage to the attaching portion 15.

  As is clear from the above, a rolling control unit 151 that is a rolling control device that adjusts the horizontal inclination of the planting unit 15 and a seedling amount adjustment that adjusts the amount of seedlings to be taken out from the seedling stage 16 A seedling amount adjusting lever 89 as a member and a planting depth adjusting lever 73 as a planting depth adjusting member for adjusting the planting depth of the seedling are provided, and a rolling control unit 151 is provided on one side with respect to the center of the machine body, and the other side. Since the seedling amount and planting depth adjustment levers 89 and 73 are distributed and arranged, the rolling control unit 151 and the adjustment levers 73 and 89 are incorporated in the planting part 15 with a good balance between the left and right sides, and the overall balance of the aircraft is good. Thus, stable running can be achieved and planting accuracy can be improved.

  In addition, a planting input shaft 49 that is a planting input unit for turning on and off the planting driving force to the planting unit 15 is provided on one side from the center of the machine body, and a rolling fulcrum that is a rolling fulcrum by rotation of the planting input shaft 49. By providing the adjustment levers 73 and 89 on the side opposite to the direction in which the planting part 15 rotates around the shaft 97, planting around the rolling fulcrum shaft 97 by the rotation of the planting input shaft 49. The moment when the part 15 rotates to the left and right is offset by the adjusting levers 73 and 89, and the center of gravity of the planting part 15 is brought close to the position of the rolling fulcrum shaft 97 at the center of the body, enabling highly accurate rolling control. It can be made.

  Furthermore, a hitch bracket 24 that is a hitch member that is connected to the machine via a link mechanism 27 so as to be movable up and down, and a rolling control that is interposed between the planting part 15 and the hitch bracket 24 to hold the planting part 15 horizontally. Provided with a unit 151, and provided with a bracket 152 which is a pivotal support member that tilts the rolling control unit 151 in a forward and downward posture and is connected to and supported by the hitch bracket 24, thereby tilting the seedling table 16 in the front-rear direction (approximately 57 degrees). The rolling control unit 151 is effectively arranged in a state substantially along the axis, the dead space on the back side of the seedling table 16 is reduced, and the rolling control unit 151 can be incorporated into the planting portion 15 in a compact manner, thereby reducing the overall length of the aircraft. To reduce the size of the aircraft.

  Further, by wrapping the rolling control unit 151 in the up-and-down swing range of the link mechanism 27 in a side view, the rolling control unit 151 is moved closer to the main unit side and the planting part 15 is disposed as far forward as possible. This makes it possible to easily reduce the overall length of the aircraft.

  As is clear from the above embodiments, the present invention includes the traveling vehicle 1 equipped with the engine 2, the planting part 15 including the seedling mount 16 and the seedling planting claws 17, and the traveling vehicle 1 via the link mechanism 27. In the rice transplanter provided with the hitch member 24 for connecting the planting part 15 and the rolling control device 151 for adjusting the horizontal inclination of the planting part 15, the vertical feed belt 123 in the bottom surface of the seedling platform 16. Since the rolling control device 151 is supported on the upper end side of the hitch member 24 in a posture inclined in a direction substantially parallel to the bottom surface at a higher position, By effectively utilizing the dead space on the back side, the rolling control device 151 can be incorporated in a compact manner, and the planting part 15 can be disposed close to the traveling vehicle 1. Further, since the rolling control device 151 can be supported at a predetermined height position on the upper end side of the hitch member 24, the rolling control device 151 is separated by a distance necessary for ensuring the rolling performance of the rolling control device 151, for example, a rolling fulcrum shaft 97 or the like. The rolling control device 151 can be separated from the rolling control device 151, and the rolling control function of the rolling control device 151 that adjusts the horizontal inclination angle of the planting unit 15 can be improved.

  In addition, the right and left seedling support frames 23 are erected on the horizontal frame 45 of the planting unit 15, and the rolling control device 151 is brought close to the guide rail 19 on the upper side of the vertical feeding belt 123. The hitch member 24, the rolling control device 151, one seedling support frame 23 and the horizontal frame 45 are arranged in a loop shape with a four-sided front view, While the rolling control device 151 is incorporated, the stopper member 168 that restricts the planting portion 15 from moving down more than a predetermined value is provided, so that the rolling control device 151 is suitable for rolling performance with respect to the rolling fulcrum shaft 97. The rolling control device 151 adjusts the inclination angle of the planting part 15 in the left-right direction. Can be improved-ring control function. The support strength can be improved while the structure for supporting the rolling control device 151 is made compact. Even if the planting part 15 is arranged close to the traveling vehicle 1, it is possible to prevent the planting part 15 and its peripheral parts from being damaged by the planting part 15 moving down more than a predetermined level.

DESCRIPTION OF SYMBOLS 1 Traveling vehicle 2 Engine 15 Planting part 16 Seedling stand 17 Seedling planting claw 24 Hitch member 27 Link mechanism 97 Rolling fulcrum shaft 123 Vertical feed belt 151 Rolling control unit (control device)

Claims (2)

A traveling vehicle equipped with an engine, a planting part having a seedling stand and a seedling planting claw, a hitch member for connecting the planting part to the traveling vehicle via a link mechanism, and a right and left inclination of the planting part Rice transplanter equipped with a rolling control device to adjust
The rolling control device is configured to be supported on the upper end side of the hitch member in a posture that is inclined in a direction substantially parallel to the bottom surface of the seedling stage at a position higher than the vertical feed belt. Characteristic rice transplanter. It is a structure in which left and right seedling support frames are erected on the horizontal frame of the planting part, and the rolling control device is disposed close to the guide rail on the upper side of the vertical feed belt, and the hitch member The rolling control device, the one seedling support frame and the horizontal frame are arranged in a loop shape with a four-sided front view, and the rolling control device is assembled on the back side of the seedling mounting table, while the planting unit The rice transplanter according to claim 1, further comprising a stopper member for restricting the lowering to a predetermined level or more.

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