JP6060519B2 - Walking rice transplanter - Google Patents

Description

  The present invention belongs to the technical field of walking type rice transplanters.

  Left and right wheels, left and right traveling transmission cases that support the wheels at the rear end and rotate in the vertical direction, left and right arms that rotate integrally with the traveling transmission case, and cylinder rods of the lifting cylinder A relay link member that moves back and forth following the movement in the front-rear direction, and left and right connecting rods that connect the left and right ends of the relay link member and the arm. It is configured to be able to rotate around the fulcrum shaft in the vertical direction arranged in between, and the left and right connecting rods are connected to the relay link member via a spring, following the change in the load sharing of the left and right wheels due to the left and right inclination of the aircraft There is a walking type rice transplanter configured to change the effective length of the left and right connecting rods by expanding and contracting the spring.

  In addition, this walking type rice transplanter transmits power from the prime mover into the main transmission case, transmits from the main transmission case to the left and right wheels via the left and right traveling transmission cases, and then transplants from within the main transmission case. The seedlings on the seedling stage are transmitted to the planting transmission case via the attached transmission shaft, transmitted from the planting transmission case to the plurality of seedling planting devices and the seedling stage, and moving the seedling stage left and right. The seedling planting device is configured to scrape one stock at a time and plant it in the field.

  In addition, this walking type rice transplanter has a prime mover and a main transmission case arranged in front of the axles of the left and right wheels, and a planting part including a planting transmission case, a plurality of seedling planting devices and a seedling mounting stand. A spare seedling stage that is arranged on the rear side of the axles of the left and right wheels and moves in the front-rear direction with respect to the airframe is arranged above the axles of the left and right wheels in a side view.

  Further, in this walking type rice transplanter, the seedling platform is configured to move left and right along the seedling receiving plate and supply seedlings one by one to the seedling inlet of each strip provided on the seedling receiving plate. The planting device is configured to scrape the seedling on the seedling outlet and plant it in the field, and to provide line drawing markers on both the left and right sides of the planting part to draw a line at the field position as an indicator of the next stroke travel, A seedling plate protection frame is provided to protect the seedling. The line drawing marker is configured to draw a line on the farm field with the tip portion in contact with the farm scene by switching from the standing posture to the lying posture lying on the side.

  In addition, this walking type rice transplanter supports a plurality of floats that are in contact with the farm scene so as to be pivotable up and down around the respective pivotal fulcrum shafts in the left and right directions, and each provided with a pivotal fulcrum shaft at the tip. The planting depth adjusting arm is fixed to the planting depth adjusting shaft and rotated up and down integrally with the planting depth adjusting shaft around the planting depth adjusting shaft. A planting depth adjusting lever for rotating the height adjusting shaft is provided (see Patent Document 1).

  And in the walking type rice transplanter, it is configured to transmit to a plurality of seedling planting devices through a plurality of planting transmission members from a transmission shaft extending in the left-right direction provided in the planting transmission case, and for a plurality of planting It transmits to the seedling planting device of 2 right and left center through the transmission member of the center of right and left among the transmission members, and via the transmission member of the left and right outermost of the plurality of transmission members for planting To the left and right outermost one seedling planting device, and to transmit from the transmission shaft to the left and right moving mechanism for moving the seedling platform left and right via the left and right moving transmission member, There is a configuration in which a plurality of safety clutches are provided on the lower side of the transmission than the planting transmission member and corresponding to a plurality of planting transmission members.

  In the walking type rice transplanter, in each of the left and right traveling transmission cases, a traveling output shaft and an axle projecting laterally from the main transmission case are inserted, and a main drive sprocket that rotates integrally with the traveling output shaft is provided. A counter driven sprocket and a counter driven sprocket that rotate integrally with each other on the counter shaft in the traveling transmission case, and the first transmission between the main driven sprocket and the counter driven sprocket. There is a configuration in which a chain is wound, a second transmission chain is wound between the counter drive sprocket and the main driven sprocket, and the transmission is decelerated in two stages in the traveling transmission case.

  Moreover, in the walking type rice transplanter, there is a configuration in which a steering handle provided at a rear end portion of the aircraft is provided so as to be able to be turned up and down, and the height of the steering handle can be changed according to the height of the operator.

  In addition, there is a stand that supports a walking type rice transplanter having left and right wheels in an inverted posture in which a front portion is downward. This stand has a width in the front-rear direction that is smaller than the full width of the walking-type rice transplanter that is in the up-down direction, that is, the front-rear direction when the walking-type rice transplanter is inverted with the walking-type rice transplanter inverted. The left and right ends are positioned inwardly in the left-right direction from the outer end.

  In addition, the stand includes a plurality of (two) front and rear frames extending in the front-rear direction, a plurality of (two) left and right frames extending in the left-right direction connecting the plurality of front and rear frames, and a lower part of the inverted walking rice transplanter. A lower support frame to be connected is provided. These frames are made of wood and are fixed to each other so that they cannot be attached or detached by nails (see Patent Document 2).

JP 2008-253231-A Japanese Utility Model Publication No. 5-54382

  An object of the present invention is to improve the support strength of a stand, prevent breakage, and reduce the cost required for a warehouse or transportation means in a walking type rice transplanter.

In order to solve the above problems, the following technical measures were taken.
That is, the invention according to claim 1 is arranged on the left and right wheels (5), the center float (12a) arranged between the left and right wheels (5), and the left and right outer sides of the left and right wheels (5). A walking type rice transplanter including a side float (12b) is provided with a stand (119) that supports an inverted posture in which the front of the machine body is downward, and the stand (119) is provided with a plurality of front and rear frames (120) extending in the front-rear direction. And the left and right frames (121) extending in the left-right direction connecting the front and rear frames (120). The front and rear frames (120) are configured to be longer than the front and rear width of the body in the inverted posture, and the stand (119). The left and right widths of the left and right wheels (5) are configured to be larger than the left and right distances of the left and right side floats (12b). A left and right extension (121a) that extends to the left and right outside of the plurality of front and rear frames (120) is formed on the frame (121), and a lower bent portion (121b) that is bent downward from the left and right extensions (121a) is formed. In addition, the front and rear frames (120) and the left and right frames (121) are connected by a frame connecting member (133), which is formed by the frame connecting member (133), the left and right extension (121a), and the lower bent portion (121b). The walking fork type rice transplanter is characterized in that a fork claw insertion portion (130) for inserting a lift fork claw is formed in the space to be formed.

Further, the invention according to claim 2 is characterized in that the fork claw insertion portion (130) is formed between right and left of the center float (12a) and the side float (12b). It was a type rice transplanter.

In the invention according to claim 3, the stand (119) is configured such that a protective frame (51) provided at the front part of the machine body is sandwiched between the front and rear frames (120) and fixed to the stand (119). The walking type rice transplanter according to claim 1 , further comprising an alignment portion (132) for aligning with another stand (119) .

The invention according to claim 4 is the walking type rice transplanter according to claim 1, characterized in that the left and right frames (121) are made of a rod having a circular cross section .

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According to the first aspect of the present invention, when the front and rear frames (120) constituting the stand (119) are longer in the front and rear direction than the front and rear width of the airframe, the airframes come into contact with each other when the airframes in an inverted posture are arranged back and forth. Can be prevented.
Further, the left and right widths of the stand (119) are configured to be larger than the left and right distances of the left and right wheels (5) and smaller than the left and right distances of the left and right side floats (12b). Since it is possible to prevent the wheels (5) having a large front-rear width from interfering with each other when they are arranged, side floats (12b) having a small front-rear width can be placed one after the other in an inverted position, and can be placed in a warehouse or transported. The work efficiency when arranging a large number of aircraft in the storage space of the means is improved.
And the fork nail insertion part (130) surrounding the three sides of the upper side and the left and right sides of the fork claw can be made simple.

According to the invention according to claim 2, in addition to the effect of the invention according to claim 1 , the fork claw insertion portion (130) is formed between the left and right of the center float (12a) and the side float (12b). When the fork claw is inserted into the claw insertion portion (130), the fork claw can be prevented from interfering with the center float (12a) and the side float (12b), so that the center float (12a) and the side float (12b) are damaged. Is prevented .

According to the invention of claim 3, in addition to the effect of the invention of claim 1 , the protective frame (51) is sandwiched and fixed between the left and right front and rear frames (120), so that the airframe can be securely attached to the stand (119). Can be supported .
In addition, by providing the alignment unit (132) for aligning the position of the other stand (119) with the stand (119), it is possible to arrange the aircraft in an inverted posture, so that the storage in the warehouse or transportation means Work efficiency when placing a large number of aircraft in the space is improved.

According to the invention of claim 4, in addition to the effect of the invention of claim 1, the left and right frames (121) are made of bars having a circular cross section, so that the operator can use the left and right frames (121) as fulcrums. Thus, it is possible to change the inverted posture and the working posture by rotating the aircraft, so that the labor required for changing the posture of the aircraft is reduced .

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Side view showing walking rice transplanter Top view showing walking rice transplanter Plan view showing relay link member and connecting rod Side view showing main frame and planting transmission case Cross-sectional plan view showing planting transmission case Perspective view showing planting depth adjustment mechanism Front view showing the stand Side view showing the stand Front view showing different stands Side view showing different stands Top view showing different stands

One embodiment of the present invention will be described below. The following embodiment is merely an embodiment and does not restrict the scope of the claims.
FIG.1 and FIG.2 is the whole side view and top view of walking type rice transplanter (1). This walking type rice transplanter (1) includes an engine (2) serving as a prime mover provided at the front end of the aircraft, a main transmission case (3) provided on the rear side of the engine (2), and the main transmission case ( 3) A traveling transmission case (4) serving as a traveling support member provided on each of the left and right sides, wheels (5) serving as left and right traveling bodies driven by power from the traveling transmission case (4), and a main transmission case (3) A main frame (6) extending rearward from the rear side surface, a planting transmission case (7) fixed to the rear end of the main frame (6), and a rear side surface of the planting transmission case (7) A rear frame (8) that is curved and extends obliquely rearward and upward, and a steering handle (9) attached to the rear end of the rear frame (8) are provided. The steering handle (9) is fixed to the rear frame (8) and cannot be repositioned. A plurality of (four) seedling planting devices (10) are attached to the lower part of the planting transmission case (7), and the seedlings supported on the front side of the rear frame (8) so as to be movable left and right. A platform (11) is provided. Therefore, this walking type rice transplanter (1) has a four-row planting configuration in which four rows of seedlings are planted simultaneously in the field while running. The engine (2), the main transmission case (3), the traveling transmission case (4), the wheels (5) and the like constitute a traveling section (traveling vehicle body), and a planting transmission case (7) and a seedling planting device. The planting part is constituted by (10), the seedling stage (11) and the like. In addition, this walk type rice transplanter (1) does not provide a line drawing marker that draws a line at an agricultural field position that serves as an indicator of travel in the next stroke.

  Moreover, the float (12) used as the several (3 pieces) grounding body which contacts a farm scene is provided in the lower part of the body, and this float (12) slides on a farm scene and leveling by the driving | running | working of a body. Among the floats (12), the center float (12a) at the center of the left and right sides of the aircraft leveles the planting position of the two seedling planting devices (10) on the left and right inner sides, and the side floats (12b) on the left and right outer sides of the aircraft. Levels the planting position of one seedling planting device (10) on each of the left and right outer sides. The center float (12a) has a front end located on the front side of the front end of the side float (12b), is longer in the front / rear length than the side float (12b), is wider in the left / right width than the side float (12b), and is wider than the side float (12b). Wide grounding area. The center float (12a) and the side float (12b) are supported so as to be pivotable up and down around their respective pivotal pivot shafts (13) arranged in the same position in a side view. It is configured to move up and down following the unevenness of the field scene.

  The output shaft of the engine (2) enters the main transmission case (3), and the power from the engine (2) is transmitted into the main transmission case (3). In the main transmission case (3), there is a main clutch that can cut off all transmission to the wheels (5), the seedling planting device (10) and the seedling mount (11), and power from the main clutch. A power branching portion that branches into a transmission path to the wheels (5) and a transmission path to the seedling planting device (10) and the seedling mounting table (11), the seedling planting device (10), and the seedling mounting table (11 ) On the transmission path to the seedling planting device (10) and the seedling mounting stand (11), and a switching of the gear meshing on the transmission path to the wheel (5) Can change gears by switching between a forward high speed state for road traveling, a forward low speed state for planting work, a neutral state where gears do not mesh and become non-transmission, and a reverse state, and a lower transmission of the transmission unit Left and right that can switch the transmission to the left and right wheels (5) to the non-transmission state on the side It is provided and the side clutch. Therefore, it is transmitted to the left and right traveling output shafts (101) protruding left and right from the main transmission case (3) via the transmission and the side clutch. The travel output shaft (101) is inserted into the travel transmission case (4), and the drive sprocket (102) provided on the travel output shaft (101) and the axle (14) are provided in the travel transmission case (4). An axle that has a transmission chain (104) wound around a driven sprocket (103) and protrudes left and right outward from the traveling transmission case (4) by the drive sprocket (102), the driven sprocket (103), and the transmission chain (104). (14) is transmitted, and the wheel (5) is driven to rotate. The traveling transmission case (4) is provided so as to be rotatable up and down around the traveling transmission shaft located at the front end, and the wheel (5) is moved up and down by moving the axle (14) located at the rear end. Move up and down. Further, the planting clutch is transmitted to the planting transmission case (7) through the planting transmission shaft (15) extending rearward from the main transmission case (3). The engine (2) and the main transmission case (3) are arranged in front of the axles (14) of the left and right wheels (5), so that the planting transmission case (7) and a plurality of seedling planting devices (10 ) And the seedling mount (11) are arranged on the rear side of the axles (14) of the left and right wheels (5).

  A hydraulic pump is fixed to the left side of the main transmission case (3), and a hydraulic valve unit is fixed to the rear of the main transmission case (3). The cylinder (16) is fixed. The hydraulic elevating cylinder (16) includes a cylinder rod (17) serving as a moving member that moves in the front-rear direction, and is disposed above the main frame (6). Accordingly, when the hydraulic pressure from the hydraulic pump is supplied to the hydraulic lift cylinder (16) by switching the hydraulic valve unit, the cylinder rod (17) moves backward. Further, when the hydraulic pressure in the hydraulic lifting cylinder (16) is switched back to the state of returning to the main transmission case (3) serving as a hydraulic tank, the cylinder rod (17) moves forward due to the weight of the machine body. Accordingly, the hydraulic elevating cylinder (16) and the cylinder rod (17) serve as actuators. A relay link member (18) serving as a relay member is rotatably connected to a rear end portion of the cylinder rod (17) via a vertical fulcrum shaft (19). The relay link member (18) is connected to the fulcrum shaft (19) in the vertical direction at the left and right center, and has a symmetrical shape. In addition, a spring receiving part (18b) is provided in the left and right center part of the relay link member (18), and a compression spring (22) provided on the cylinder rod (17) is in contact with the spring receiving part (18b). Therefore, the compression spring (22) provides a rotational resistance around the fulcrum shaft (19) of the relay link member (18), and the relay link member (18) rotates to the neutral position and returns in an unloaded state. It has become.

  The left and right end portions of the relay link member (18) are connected to the rear end portions of the left and right connecting rods (20) via the left and right vertical connecting shafts (23). The front end of the connecting rod (20) is connected to the left and right arms (21) fixed to the upper side of the traveling transmission case (4). Therefore, the relay link member (18) receives the ground load of the wheel (5) through the traveling transmission case (4), the arm (21), and the connecting rod (20).

  An expansion / contraction part (24) for changing the effective length of the connection rod (20) is formed in the middle part of the right connection rod (20). The expansion / contraction part (24) is comprised by the external thread formed in the front part of the connection rod (20), and the internal thread formed in the rear part of the connection rod (20), and has fitted the external thread to the internal thread. Accordingly, the length of the connecting rod (20) is changed and adjusted by relatively rotating the front and rear portions of the connecting rod (20) around the axis of the connecting rod (20). Yes. In addition, the lock nut (24a) which fixes so that the front part and rear part of a connection rod (20) may not rotate relatively in the state which set the connection rod (20) to desired length is provided. On the other hand, the left connecting rod (20) is composed of an integral shaft member, has no expansion / contraction part (24), and cannot be changed in length.

  A plate-shaped restricting tool (26) serving as a restricting member is fixed to the middle portion of the connecting rod (20). The restricting tool (26) of the right connecting rod (20) is provided at the front of the connecting rod (20).

  Therefore, when the hydraulic valve unit is switched to supply the hydraulic pressure from the hydraulic pump into the hydraulic lifting cylinder (16), the cylinder rod (17) moves rearward, the relay link member (18) moves rearward, The relay link member (18) pulls the left and right connecting rods (20) to the rear side via the connecting shaft (23) and rotates the left and right arms (21) to the rear side, thereby moving the left and right traveling transmission cases ( 4) rotates downward, and the left and right wheels (5) move downward to raise the aircraft relative to the field. Conversely, when the hydraulic valve unit is switched to return the hydraulic pressure in the hydraulic lift cylinder (16) to the main transmission case (3), the left and right arms (21) are connected to the left and right arms by the ground load of the left and right wheels (5). The cylinder rod (17) is returned to the front through the rod (20), the relay link member (18), etc., and the left and right wheels (5) are moved upward to lower the aircraft relative to the field. Further, when the cylinder rod (17) moves rearward to the end of the operation stroke in order to move the left and right wheels (5) most downward to raise the airframe, the left and right restrictors (26) are moved from the front side to the frame (25 ), The rotation of the relay link member (18) around the fulcrum shaft (19) is restricted, and the left and right wheels (5) are restricted from moving up and down in a reciprocal manner.

  The relay link member (18) is temporarily turned around the fulcrum shaft (19) against the compression spring (22) so that the left and right wheels (5) follow the left and right inclination of the field cultivator and the unevenness of the field cultivator. The relay link member (18) is rotated by the compression spring (22) to return to the neutral position, and the left and right rolling posture of the aircraft is maintained, and the left and right inclined posture of the aircraft is unstable. Is prevented. In addition, the left-right inclination posture of the airframe can be adjusted by changing and adjusting the length of the right connecting rod (20) by the expansion / contraction part (24).

  The seedling planting device (10) and the seedling mount (11) are operated by power from the planting transmission case (7). The seedling mount (11) is supported from both left and right ends of a left and right moving shaft (29) protruding left and right of the planting transmission case (7) via left and right connecting members (30). It moves back and forth along (27) and supplies seedlings one by one to the seedling inlet (28) of each strip provided on the seedling receiving plate (27). A left / right moving rail (34) is fixedly provided on the upper part of the seedling stage (11), and the left / right moving rail (34) is supported from the upper part of the rear frame (8). 33) and supported so as to be movable left and right. Accordingly, the seedling stage (11) is supported by the seedling receiving plate (27) so as to be movable left and right at the lower part and supported by the support roller (33) so as to be movable left and right at the upper part. It is configured to reciprocate to the left and right via the left and right moving shaft (29) by power. In addition, the seedling stage (11) is provided with a seedling feeding belt (35) for each strip for transferring seedlings to the seedling outlet (28) side (lower side) at the left and right moving ends. The seedling feeding belt (35) is operated by the power from the planting transmission case (7), transfers one mat seedling at the left and right moving ends of the seedling mounting base (11), and transfers the seedling to the seedling outlet (28 ).

  The seedling planting device (10) is a crank type that is attached to the lower portion of the planting transmission case (7) and is operated by power from the planting transmission case (7), and the separation claw (31) is a seedling outlet. (28) The upper seedling is scraped off and the scraped seedling is pushed out by the pushing tool (32) toward the field scene to plant the seedling in the field.

  By the way, the left and right seedling receiving plate protection frames (105) for protecting the seedling receiving plate (27) are provided on the left and right outer sides of the seedling receiving plate (27). The seedling plate protection frame (105) is formed to be bent in a U shape in plan view. The left and right ends of the left and right seedling receiving plate protection frames (105) are the left and right outermost ends of the aircraft. In addition, in order to narrow the left-right width | variety of a body, it is good also as a structure which does not mount | wear with the right and left seedling receiving plate protection frame (105).

  The transmission configuration in the planting transmission case (7) will be described. The plant is transmitted to the bevel gear (107) via the safety clutch (106) on the planting transmission shaft (15). The safety clutch (106) is a clutch that cuts off transmission when overloaded, and is configured to adjust the load when the clutch is disengaged by adjusting the spring load of the clutch. Power is transmitted to the transmission shaft (108) extending in the left-right direction via the bevel gear (107), and a plurality of sets (three sets) of planting drive sprockets (109), a planting chain (110), and It transmits to a several seedling planting apparatus (10) via the planting transmission member (112) which consists of a driven sprocket (111) for planting. The plurality of planting transmission members (112) are transmitted to the seedling planting device (10) at the center of the left and right through the planting transmission member (112) at the left and right center among the plurality of planting transmission members (112). The left and right outermost planting transmission members (112) of (112) are transmitted to the left and right outermost one seedling planting device (10). Further, the seedling platform (11) is connected to the transmission shaft (108) via a left / right movement transmission member (115) comprising a plurality of (two pairs) left / right movement drive gears (113) and a left / right movement driven gear (114). ) Is transmitted to a left / right moving mechanism (116) that moves the left / right. The left-right movement transmission member (115) is a gear train that is transmitted from a plurality of pairs of gear trains composed of a plurality of pairs (two pairs) of left-right movement drive gears (113) and a left-right movement driven gear (114). Alternatively, the transmission ratio can be switched. The left / right moving mechanism (116) is driven by power from the left / right moving transmission member (115) (rotates integrally with the left / right moving driven gear (114)) and extends in the left / right direction, and a lead cam shaft. A lead cam (118) that moves left and right by the rotation of (117) and a left and right moving shaft (29) that moves left and right integrally with the lead cam (118) are provided. The lead cam shaft (117) has a well-known configuration having an oblique lead groove. The left and right end portions of the left and right moving shaft (29) protrude to the left and right outside of the planting transmission case (7) and are connected to the seedling table (11) via the connecting member (30). Accordingly, the seedling stage (11) is configured to reciprocate left and right integrally with the left and right moving shaft (29) as the left and right moving shaft (29) moves left and right. In addition, it has the structure which transmits to the seedling feed belt (35) of each strip | line through the seedling feed drive shaft which rotates integrally with a lead cam shaft (117).

  The planting transmission shaft (15) is arranged immediately on the right side of the left and right center planting transmission member (112), and the left and right movement transmission member (115) is on the left side of the middle planting transmission member (112). Is arranged. Further, the planting transmission shaft (15) and the left-right movement transmission member (115) are arranged in the left-right direction closest to the planting transmission member (112) at the center of the left and right of the plurality of planting transmission members (112). Placed in position. Therefore, the planting transmission shaft (15) and the left-right movement transmission member (115) are arranged separately on the left and right of the planting transmission member (112) at the center of the left and right. Further, the centering left and right planting transmission member (112) and the planting transmission shaft (15) are larger than the space between the left and right centering planting transmission member (112) and the left and right moving transmission member (115). ) Between the left and right directions.

  A main clutch that can cut off transmission to the wheel (5), the seedling planting device (10), and the seedling stage (11) on the front side of the steering handle (9) and on the rear side of the seedling stage (11). Lever (36), planting lifting lever for switching the oil passage of the hydraulic valve unit to cut off transmission to the seedling planting device (10) and seedling mounting base (11) and to operate the hydraulic lifting cylinder (16) (37). The main clutch lever (36) is configured to be operated in two operation positions, an on position and a disengagement position. The main clutch lever (36) is operated by operating the main clutch in the main transmission case (3) to be in a transmission state and a non-transmission state. Switch to. The planting lifting / lowering lever (37) is configured to be operated in four operation positions including a planting position, a lowered position, a neutral position, and a raised position, and operates a planting clutch in the main transmission case (3). Then, the planting transmission shaft (15) is switched between a driving state and a non-driving state, and the hydraulic lifting cylinder (16) is operated to move the left and right wheels (5) up and down. That is, when operated to the planting position, the planting clutch (10) and the planting platform (11) are operated with the planting clutch in the transmission state, and the left and right wheels (5) are brought into contact with the ground due to their own weight. As a result, the hydraulic pressure in the hydraulic lift cylinder (16) is returned to the main transmission case (3), the left and right wheels (5) are moved up, the aircraft is lowered, and the float (12) is brought into a grounded state. When operated to the lowered position, the planting clutch is brought into a non-transmission state in a state where the machine body is lowered as described above, and the operations of the seedling planting device (10) and the seedling placing stand (11) are stopped. When operated to the neutral position, the hydraulic passage is closed by shutting off the oil passage to the hydraulic lifting cylinder (16) with the operation of the seedling planting device (10) and the seedling mounting stand (11) stopped as described above. The operation of the cylinder (16) is fixed, and the left and right wheels (5) are fixed at an arbitrary vertical position to stop the elevation of the aircraft. When operated to the raised position, hydraulic pressure is supplied into the hydraulic lifting cylinder (16) with the operation of the seedling planting device (10) and the seedling mounting stand (11) stopped as described above, and the left and right wheels (5) is moved downward to raise the fuselage, and the float (12) is in a non-grounded state. Moreover, it is the structure which switches the oil path of a hydraulic valve unit via the rod connected with the front part of this center float (12a) by the vertical motion of a center float (12a), and the front part of a center float (12a) When the motor moves upward, the hydraulic pressure is supplied into the hydraulic lifting cylinder (16) to move the left and right wheels (5) downward. Therefore, when the planting lift lever (37) is in the planting position and the lowered position, the center float (12a) contacts the field scene and moves up and down to bring the center float (12a) into a desired front and back posture. The left and right wheels (5) move up and down so that the aircraft is controlled to rise and fall to a predetermined ground height.

  On the front side of the steering handle (9) and the seedling platform (11), there are a transmission lever (38) for operating the transmission section in the main transmission case (3), and a recoil knob (for starting the engine (2)) ( 39). The engine (2) and the recoil knob (39) at the front end of the machine body are connected by a recoil rope (40). The left and right side clutch levers (41) are provided below the left and right handle grips (9a) of the steering handle (9), and the left and right side clutch levers (41) are provided in the main transmission case (3). The side clutch is operated. A planting depth adjusting lever (42) is provided on the left side of the rear frame (8) on the diagonally lower front side of the steering handle (9), and the lever (42) is operated by operating the planting depth adjusting lever (42). 42) the planting depth adjusting shaft (53) in the left-right direction rotating integrally with the planting depth adjusting shaft (53), and each planting depth adjusting arm (54) rotating together with the planting depth adjusting shaft (53). By changing the vertical position of the rotation fulcrum shaft (13) of each float (12) with respect to the machine body, the planting depth of the seedlings by the seedling planting device (10) can be changed and adjusted. . The pivot fulcrum shaft (13) is welded and fixed to the planting depth adjusting arm (54). A seedling collection amount adjusting lever (65) is provided on the right side of the rear frame (8) on the diagonally front lower side of the steering handle (9), and the seedling receiving plate (27) is operated by operating the seedling collection amount adjusting lever (65). ) To the seedling planting device (10) is changed, and the amount of seedlings per strain by the seedling planting device (10) can be changed and adjusted.

A bonnet cover (43) is provided above the engine (2) and the main transmission case (3). A fuel tank (44) is provided above the engine (2).
A preliminary seedling stage (45) on which a preliminary seedling is placed is provided at a position extending from above the rear part of the bonnet cover (43) to above the front part of the planting transmission case (7). This preliminary seedling stage (45) is composed of a frame that combines rods, and is fixed to and supported by the preliminary seedling stage support frame (46). Therefore, the preliminary seedling stage (45) is configured not to move back and forth. Rising parts (47) are provided on the front, rear, left and right sides of the preliminary seedling stage (45) so that the seedlings mounted by the rising parts (47) do not fall off. The preliminary seedling stage (45) has a width of about 60 cm in front and rear and a width of about 120 cm in width so that four mat seedlings with a length of about 60 cm and a width of about 30 cm can be placed. Therefore, the preliminary seedling mounting table (45) can be mounted by arranging four mat seedlings with the longitudinal direction in the front-rear direction. In order to facilitate seedling transportation, seedlings may be handled in the form of rolled seedlings wound with matted seedlings, but these rolled seedlings can also be placed on the spare seedling stage (45). At this time, since the rising parts (47) on the four sides are set relatively high, it is possible to prevent the rolled seedlings placed on the preliminary seedling placing table (45) from falling off and falling. In addition, the preliminary seedling stage (45) is disposed above the axles (14) of the left and right wheels (5) in a side view, and the front and rear center of the preliminary seedling stage (45) and the axle (14) are the same front and rear. The position is set.

  The preliminary seedling support frame (46) is disposed between the bonnet cover (43) and the planting transmission case (7) (planting section). A bonnet cover support member (50) extending obliquely forward and upward to support the rear part of the bonnet cover (43) is fixed to the fixing member (49) for fixing the preliminary seedling stage support frame (46) with the main frame (6). It is stuck. Thereby, the support intensity | strength of a bonnet cover support member (50) improves, and a bonnet cover (43) can be supported firmly reliably. Even if the bonnet cover support member (50) is supported from the main frame (6) without the fixing member (49), the bonnet cover support member (50) is supported near the fixing member (49). If comprised, the support strength of a bonnet cover support member (50) can be improved. Further, if the bonnet cover support member (50) is supported from the preliminary seedling support base frame (46), the bonnet cover support member (50) is improved while improving the support strength of the bonnet cover support member (50). It can be shortened and made compact, reducing the weight and cost.

  A protective frame (51) for protecting the engine (2), the main transmission case (3), the bonnet cover (43) and the like from obstacles ahead of the aircraft is provided at the front of the aircraft. The protective frame (51) includes left and right attachment portions (51a) extending from the left and right side surfaces of the main transmission case (3) to the front side, and a protection portion (a front end portion of the machine body connecting the left and right attachment portions (51a)). 51b). The protective portion (51b) is configured in a horizontal shape extending straight from side to side.

  When loading and fixing the airframe on the truck bed, the ropes are hung on the left and right ends of the left and right central parts of the protective part (51b), and the ropes are hung on the hooks (52) fixed to the upper part of the rear frame (8). The three parts of the fuselage are fixed and firmly fixed to the loading platform.

  In this walking type rice transplanter (1), the operator holds the left and right handle grips (9a) of the steering handle (9) and operates the planting lift lever (37) to the planting position to lower the aircraft. By putting the planting part into an operable state and operating the main clutch lever (36) to the on position to operate the planting part while driving the aircraft, four seedlings are planted simultaneously in the field. When reaching the edge of the field, the planting lift lever (37) is operated to the raised position to stop the operation of the planting unit, the machine body is raised, and the side clutch lever (41) inside the turn is operated to turn. The side clutch of the inner wheel (5) is disconnected and the aircraft is turned. When the aircraft is turning, the aircraft is raised by operating the planting lift lever (37) to the raised position. When the aircraft is raised to a desired height, the planting lift lever (37) is operated to the neutral position. For example, the aircraft can be fixed at the height, and the operator can easily turn the aircraft. Thereafter, similarly, the planting lift lever (37) is operated to the planting position to perform the planting operation in the next step, and planting seedlings in the field. When traveling on the road or the like, the body is raised and travels by appropriately operating the speed change lever (38).

  Next, the stand (119) that supports the walking type rice transplanter (1) in an inverted posture with the front portion facing downward will be described. The stand (119) includes a plurality of (two) front and rear frames (120) extending in the front-rear direction, a plurality of (two) left and right frames (121) extending in the left-right direction connecting the plurality of front and rear frames (120), and an inverted position. Left and right lower support frames (122) connected via bolts to the main transmission case (3) which is the lower part of the walking type rice transplanter in the posture, and the planting transmission case (the upper part of the walking type rice transplanter in the inverted posture) 7) is provided with left and right upper support frames (123) connected via bolts. In addition, lower support bolt holes (124) that penetrate the bolts are formed in the upper end portions of the left and right lower support frames (122) in the front-rear direction, and the upper support portions of the left and right upper support frames (123) are formed at the upper end portions. Is provided with a planting transmission case connecting member (125), and the planting transmission case coupling member (125) is formed with a plurality (two) of upper support bolt holes (126) that penetrate the bolts in the left-right direction. doing. The front and rear frames (120) and the left and right frames (121) are fixed by welding, and the lower ends of the left and right lower support frames (122) are fixed to the left and right inner sides of the left and right front and rear frames (120) by welding. The lower ends of the left and right upper support frames (123) are configured to be detachably attached to the mounting plates (127) fixed to the left and right ends of the front left and right frames (121) by welding with bolts, A first attaching / detaching hole (128) into which a bolt can be inserted in the left-right direction is formed in the lower end portion of the upper support frame (123) and the mounting plate (127). The upper and lower ends of the left and right upper support frames (123) and the planting transmission case connecting member (125) are formed with second attachment / detachment holes (129) into which bolts can be inserted in the left-right direction. Accordingly, the upper support frame (123) can be removed by removing the bolts from the first attachment / detachment hole (128) and the second attachment / detachment hole (129).

  Fork claw insertion portions (130) for inserting lift fork claws are formed at the left and right ends of the front and rear left and right frames (121). The fork claw insertion portion (130) extends from the upper surfaces of the left and right ends of the left and right frames (121) to the left and right sides, bends downward, and further bends to the left and right sides to be fixed to the left and right outer surfaces of the front and rear frames (120). It is formed of a U-shaped plate, and is configured by a rectangular space surrounded on all sides by the plate, the left and right frames (121) and the front and rear frames (120). The fork claw insertion portions (130) are configured at four positions on the front, rear, left, and right, but the front and rear fork claw insertion portions (130) are arranged at the same position in front view. Accordingly, by inserting the left and right lift fork claws such as forklifts over the front and rear fork claw insertion portions (130) and raising the fork claws, the stand (119) and the walking type rice transplanter ( 1) is raised.

  Further, the lower support frame (122) is disposed at a position closer to the rear portion of the stand (119), and is in a tilted posture in which the lower support frame (122) is located forward as it goes upward. On the other hand, the upper support frame (123) is disposed at a position closer to the front portion of the stand (119), and is in a tilted posture that is tilted backward as it goes upward. The upper support frame (123) has its front and rear inclined postures restricted by the front edge of the lower end contacting the plate constituting the fork claw insertion portion (130). Accordingly, the direction in which the lower support frame (122) and the upper support frame (123) are tilted back and forth so that the distance in the front-rear direction between the lower support frame (122) and the upper support frame (123) is reduced. It is configured for. In addition, the lower support frame (122) or the upper support frame (123) is configured to extend in the vertical direction in the front view without being inclined left and right. A reinforcing frame (131) is fixed between the upper portion of the lower support frame (122) and the front and rear frames (120). The reinforcing frame (131) is in a tilted posture of rearward tilting toward the rear side as it goes upward. Accordingly, the reinforcing frame (131) is inclined forward and backward to the opposite side of the lower support frame (122), whereby the load received by the lower support frame (122) can be dispersed to improve the support strength.

  Moreover, the front-rear frame (120) is configured to be longer than the full width in the vertical direction when the walking type rice transplanter (1) is not inverted, that is, the full width in the front-rear direction in the inverted posture of the walking type rice transplanter (1). The left and right widths of the stand (119), which is the distance between the left and right outer ends of the left and right fork claw insertion portions (130), is the distance between the left and right outer ends of the left and right wheels (5) of the walking type rice transplanter (1). Larger than the distance between the left and right outer ends of the left and right side floats (12b). Further, the left and right fork claw insertion portions (130) are positioned below the space between the center float (12a) and the side float (12b) of the walking type rice transplanter (1) in an inverted posture in front view.

  At the front end of each of the left and right front and rear frames (120), an alignment portion (132) for alignment with another stand (119) is fixedly provided. This alignment part (132) is comprised by the upper surface part welded to the upper surface of the front-and-rear frame (120), and the side part bent and extended below from the outer end of an upper surface part, and one part is the front-rear frame (120). It protrudes from the front end of the front side. The side portions are located slightly outside the left and right sides of the left and right front and rear frames (120). Therefore, the upper surfaces of the left and right alignment portions (132) are placed on the upper side of the rear ends of the left and right front and rear frames (120) of another stand (119), and the left and right front and rear frames ( 120) The side portions of the left and right alignment portions (132) are positioned on the left and right outer sides of the rear end portion, and the stand (119) is aligned. Accordingly, the left and right positions of the stands (119) and the left and right positions of the walking rice transplanter (1) in the inverted posture can be aligned and arranged.

  Next, a different form of the stand (119) will be described. Only the configuration different from the above-described stand (119) will be described below, and the description of the same configuration will be omitted. In the stand (119) of this different form, the left and right frames (121) are formed of a bar having a circular cross section. The left and right frames (121) include a left and right extension (121a) that extends outward from the left and right front and rear frames (120), and a lower bent portion (121b) that is bent downward following the left and right extension (121a). And is arranged apart from the front and rear frames (120). Accordingly, frame connecting members (133) for connecting the front and rear frames (120) and the left and right frames (121) are provided on the left and right inner sides of the left and right front and rear frames (120), respectively. The frame connecting member (133), the left and right extension (121a), and the lower bent portion (121b) form a fork claw insertion portion (130) by a space surrounded by the upper side and the left and right sides. Further, the front and rear frame (120) and the frame connecting member (133) are fixed by bolts inserted into the frame connecting member bolt holes (134) in the left and right direction, and the bolts are removed to remove the front and rear frames (120) and the frame connecting member ( 133) and the left and right frames (121) can be separated. Further, the above-described reinforcing frame (131) and upper support frame (123) are not provided, and the lower support frame (122) is moved forward and backward by bolts inserted into the lower support frame bolt holes (135) in the left-right direction. The frame (120) is detachably attached. Further, a protective frame (51 provided at the front end of the walking type rice transplanter (1) is located at a position rearward of the left and right frames (121) on the front side of the front and rear frames (120) and in front of the lower support frame (122). ) Are provided with fixing holes (136) in the left-right direction for fixing the left and right end portions to match.

  Therefore, with the front and rear frames (120) and the left and right frames (121) separated, the fixing holes (136) are aligned with the left and right ends of the protective frame (51) of the walking type rice transplanter from the left and right sides, and the protective frame (51 ) Is sandwiched between the left and right front and rear frames (120), and the front and rear frames (120) and the left and right frames (121) are coupled by bolts.

  The walking type rice transplanter (1) according to the embodiment of the present invention includes left and right wheels (5), and left and right traveling transmission cases that support the wheels (5) on the rear end and rotate in the vertical direction ( 4), the left and right arms (21) that rotate together with the traveling transmission case (4), and the forward / backward movement of the cylinder rod (17) of the elevating cylinder (16) to move back and forth. A relay link member (18) and left and right connecting rods (20) for connecting the left and right ends of the relay link member (18) and the arm (21) are provided, and the relay link member (18) is connected to the left and right. It is configured to be rotatable around a fulcrum shaft (19) in the vertical direction arranged between the rods (20), and one of the connecting rods (20) on the left and right is fixed with a length adjusted by expansion and contraction by an expansion / contraction part (24). The left and right connecting rods (20) are long. It has a structure that can not be changed.

  Accordingly, the relay link member (18) rotates around the fulcrum shaft (19) in the vertical direction following the left-right inclination of the farm cultivator and the unevenness of the farm cultivator, and the left and right wheels (5) conflict. Then, it moves up and down to maintain the left and right tilting posture of the aircraft in a desired posture. Since the length of one of the left and right connecting rods (20) can be adjusted by the telescopic part (24), the left and right wheels such as the relay link member (18), the left and right connecting rods (20), and the left and right arms (21). Regardless of the assembly error of the vertical movement mechanism of (5) or the secular change of the vertical movement mechanism, the left and right wheels (5) can be evenly linked, and the vertical movement of the left and right wheels (5) is balanced. It is possible to perform right and left rolling of the aircraft properly and maintain the seedling planting posture and planting depth appropriately. In addition, since the length of the other connecting rod (20) on the left and right cannot be changed and the length of only the one connecting rod (20) on the left and right is adjusted, the relative upper and lower sides of the left and right wheels (5) can be adjusted. The position can be easily adjusted, and the structure can be simplified and the cost can be reduced by providing the expansion / contraction part (24) only on the left and right connecting rods (20).

  The left and right connecting rods (20) are each provided with a restricting member (26), and the right and left restricting members (26) are moved as the elevating cylinder (16) is operated to lower the left and right wheels (5). Is configured to restrict the left and right wheels (5) from moving up and down reciprocally in contact with the frame (25) of the fuselage.

  Therefore, when the aircraft is traveling on the road or when the aircraft is loaded onto a truck, if the left and right wheels (5) are lowered and the aircraft is raised, the right and left wheels (5) are moved up and down by the restricting member (26). Since it is regulated, it can travel with the attitude of the airframe stabilized, and the operability and safety are improved.

  Further, the power from the prime mover (2) is transmitted into the main transmission case (3), and transmitted from the main transmission case (3) into the planting transmission case (7) via the planting transmission shaft (15). And it is set as the structure transmitted to a some seedling planting apparatus (10) via the some transmission member (112) from the transmission shaft (108) provided in the planting transmission case (7) extended in the left-right direction. The plurality of planting transmission members (112) are transmitted to the seedling planting device (10) at the center of the left and right through the planting transmission member (112) at the center of the left and right. Each of the members (112) is transmitted to the outermost right and left outermost seedling planting device (10) via the left and right outermost planting transmission member (112), and moved left and right from the transmission shaft (108). Is transmitted to the left-right movement mechanism (116) for moving the seedling stage (11) to the left and right via the transmission member (115). It is set as the structure, and it is set as the structure which a seedling planting apparatus (10) scrapes the seedlings on a seedling mounting stand (11) one by one at a time, and is planted in a farm field. Of the plurality of planting transmission members (112) at a position in the left-right direction closest to the central planting transmission member (112) in the left and right, and the planting transmission member (112) in the middle of the left and right A safety clutch (106) that is arranged to be distributed to the left and right and cuts off the transmission due to overload is provided on the planting transmission shaft (15).

  Therefore, the mechanical lock can be prevented from occurring in the plurality of seedling planting devices (10) by the common safety clutch (106). Moreover, since the common safety clutch (106) is disposed near the planting transmission member (112) that is transmitted to the two seedling planting devices (10) in the center of the left and right, a plurality of seedling planting devices (10 ) Can be efficiently received and the operation can be ensured, and the plurality of seedling planting devices (10) and the transmission mechanism to the plurality of seedling planting devices (10) can be reliably prevented.

  Further, the centering left and right planting transmission member (115) and the planting transmission shaft (15) are larger than the space between the left and right centering planting transmission member (112) and the left and right movement transmission member (115). ) Between the left and right directions.

Therefore, the drive resistance of a plurality of seedling planting devices (10) can be received efficiently, and the operation can be ensured.
Further, the power from the prime mover (2) is transmitted into the main transmission case (3) and transmitted from the main transmission case (3) to the left and right wheels (5) via the left and right traveling transmission cases (4). Then, a plurality of seedling planting devices are transmitted from the main transmission case (3) to the planting transmission case (7) through the planting transmission shaft (15), and transmitted from the planting transmission case (7). (10) and the seedling mounting table (11) are configured to transmit, and the seedling planting device (10) for each strain of seedlings on the seedling mounting table (11) while moving the seedling mounting table (11) left and right. Scraping and planting in the field, the prime mover (2) and the main transmission case (3) are arranged in front of the axles (14) of the left and right wheels (5), and the planting transmission case (7), multiple The seedling planting device (10) and the seedling mounting stand (11) are connected to the axles (14) of the left and right wheels (5). Arranged on rear side, disposed above each of the axles of the left and right wheels preliminary seedling load platform which does not move in the longitudinal direction relative to the body (45) in side view (5) (14).

  Therefore, the prime mover (2) and the main transmission case (3), which are heavy objects, and the planting part are arranged separately on the front and rear of the axle (14), and the spare seedling platform (45) that becomes heavy by placing seedlings is viewed from the side. Therefore, the front / rear weight balance of the airframe can be improved, and the driving propulsion force by the left and right wheels (5) can be improved. Moreover, since the preliminary seedling stage (45) does not move in the front-rear direction with respect to the airframe, it is possible to prevent the front-rear weight balance of the airframe from being lost and further improve the running performance.

  Further, in each of the left and right traveling transmission cases (4), a traveling output shaft (101) and an axle (14) protruding laterally from the main transmission case (3) are inserted and provided on the traveling output shaft (101). The transmission chain (104) is wound around the drive sprocket (102) and the driven sprocket (103) provided on the axle (14).

  Therefore, since the traveling propulsion force by the left and right wheels (5) is improved, the traveling transmission case (4) can be transmitted to the wheels (5) with a small reduction ratio by the single transmission chain (104). The transmission configuration can be simplified and the cost can be reduced.

In addition, the steering handle (9) provided at the rear end of the aircraft is fixed to the aircraft so that the position cannot be changed.
Therefore, the operation load applied to the steering handle (9) can be properly maintained, and the operability is improved. Further, the mechanism for changing the position of the steering handle (9) can be omitted, and the cost can be reduced.

  The seedling stage (11) moves left and right along the seedling receiving plate (27) and supplies seedlings one by one to the seedling inlet (28) of each strip provided on the seedling receiving plate (27). The seedling planting device (10) is configured to scrape the seedling on the seedling outlet (28) and plant it in the field, and is provided with a line-drawing marker that draws a line at the field position that serves as an indicator for the next stroke. The right and left ends of the seedling receiving plate (27) or the left and right ends of the seedling receiving plate protection frame (105) that protects the seedling receiving plate (27) are the left and right outermost ends of the aircraft.

  Therefore, conventionally, the drawing marker located on the left and right outermost sides of the airframe can be omitted even in a standing state that generally does not draw, so the left-right width of the airframe can be reduced, and the airframe can be made compact and the cost can be reduced.

  The seedling stage (11) moves left and right along the seedling receiving plate (27) and supplies seedlings one by one to the seedling inlet (28) of each strip provided on the seedling receiving plate (27). The seedling planting device (10) is configured to scrape the seedling on the seedling outlet (28) and plant it in the field without providing a seedling receiving plate protection frame for protecting the seedling receiving plate (27). The left and right ends of the seedling receiving plate (27) are the left and right outermost ends of the aircraft.

  Therefore, since the seedling receiving plate protection frame (105) for protecting the seedling receiving plate (27) can be omitted, the left and right widths of the aircraft can be reduced, the aircraft can be made compact, and the cost can be reduced.

  Further, a plurality of floats (12) that come in contact with the farm scene are supported so as to be pivotable up and down around each of the left and right pivot points (13), and the pivot point (13) is welded to the tip. Each planting depth adjusting arm (54) fixed in this manner is fixed to the planting depth adjusting shaft (53) and the planting depth adjusting shaft is centered on the planting depth adjusting shaft (53). The planting depth adjusting lever (42) for rotating the planting depth adjusting shaft (53) is provided so as to rotate up and down integrally with (53).

Therefore, since the rotation fulcrum shaft (13) is welded and fixed to the planting depth adjusting arm (54), the structure can be simplified and the cost can be reduced.
The stand (119) of the walking type rice transplanter (1) includes left and right wheels (5), a center float (12a) disposed between the left and right wheels (5), and left and right wheels (5). A stand for supporting a walking type rice transplanter having a side float (12b) arranged on the outside in an inverted posture with the front part downward, and in a state where the walking type rice transplanter is not inverted, the vertical type, i.e., the walking type rice transplanter The width in the front-rear direction is larger than the full width of the walking type rice transplanter that is in the front-rear direction in an inverted state, and is inward in the left-right direction with respect to the left and right outer ends of the left and right side floats (12b) at the left-right outer position The left and right ends are located in the position.

  Therefore, the width of the stand in the front-rear direction is larger than the full width of the walk-type rice transplanter in the front-rear direction when the walking-type rice transplanter is inverted. It is possible to prevent the machines from being damaged due to interference. In addition, since the left and right ends of the stand are positioned in the left and right ends of the left and right side floats (12b) in the left and right outer ends of the left and right wheels, and the left and right wheels, the left and right wheels are arranged side by side. In the inverted posture, the side floats (12b) having a small front-rear width can be arranged overlapping each other in the inverted posture without causing the wheels (5) having a large front-rear width to interfere with each other. It is possible to efficiently arrange the walking type rice transplanters and reduce the cost required for warehouses and transportation means.

  Moreover, the walk type rice transplant provided with the center float (12a) arrange | positioned between the left and right wheels (5), the left and right wheels (5), and the side float (12b) arranged on the left and right outer sides of the left and right wheels (5). A stand that supports the machine in an inverted position with the front part downward, and is used for lifting at a lower position between the center float (12a) and the side float (12b) of the walking type rice transplanter in the inverted position in front view. A fork claw insertion portion (130) for inserting a fork claw was configured.

  Therefore, when the fork claw is inserted into the fork claw insertion portion (130), the fork claw can be prevented from being accidentally interfered with the center float (12a) and the side float (12b). It is possible to prevent the side float (12b) from being damaged.

  In addition, it is a stand that supports the walking type rice transplanter in an inverted posture in which the front part is downward, and a plurality of front and rear frames (120) extending in the front-rear direction and a right and left extending in the left-right direction connecting the plurality of front and rear frames (120). A frame (121), a lower support frame (122) connected to the lower part of the walking type rice transplanter in the inverted posture, and an upper support frame (123) connected to the upper part of the walking type rice transplanter in the inverted posture, The support frame (123) was configured to be detachable.

  Therefore, since the upper part and the lower part of the walking type rice transplanter in the inverted posture are supported, the walking type rice transplanter in the inverted posture can be stably supported. Moreover, since it connects with the upper part of the walking type rice transplanter of an inverted posture, and comprised the upper support frame (123) which becomes long so that attachment or detachment was possible, the upper support frame (123) can be removed and a stand can be stored compactly. .

Further, the lower support frame (122) or the upper support frame (123) is configured to face in the vertical direction in front view.
Therefore, the lower support frame (122) or the upper support frame (123) facing the vertical direction in front view can accurately receive the support load from above, and the support strength is improved.

  Further, the lower support frame (122) and the upper support frame (123) are arranged so that the distance in the front-rear direction between the lower support frame (122) and the upper support frame (123) becomes narrower toward the upper side in a side view. Was configured in a direction inclined forward and backward.

Therefore, the walking type rice transplanter can be stably supported by the lower support frame (122) and the upper support frame (123) inclined forward and backward, and the support strength is improved.
In addition, a reinforcing frame (131) inclined forward and backward on the side opposite to the support frame was connected to the lower support frame (122) or the upper support frame (123).

Therefore, the support strength of the lower support frame (122) or the upper support frame (123) can be improved by the reinforcing frame (131).
Also, a plurality of left and right frames (121) are provided, and fork claw insertion portions (130) for inserting lift fork claws are formed at the left and right ends of each left and right frame (121).

Therefore, the fork claw insertion portion (130) can be configured with a simple structure.
The left and right frames (121) include a left and right extension (121a) extending outward in the left and right directions than the plurality of front and rear frames (120), and a lower bent portion (121b) bent downward following the left and right extensions (121a). ), The frame connecting member (133) for connecting the front and rear frame (120) or the front and rear frame (120) and the left and right frames (121), the left and right extension (121a), and the lower bent portion (121b), And the fork claw insertion part (130) was comprised by the space enclosed by three sides of the right-and-left side.

Therefore, the fork claw insertion portion (130) can be configured with a simple structure surrounding the upper side and the left and right sides.
The left and right frames (121) are configured to be detachable from the plurality of front and rear frames (120).

Therefore, the left and right frames (121) can be removed and the stand can be stored compactly.
Further, the left and right frames (121) were made of bars having a circular cross section.

  Therefore, a stand can be attached to the front end of the walking type rice transplanter in the normal state, and the walking type rice transplanter can be inverted with the left and right frame (121) as a fulcrum by placing the foot on the left and right frame (121). The left and right frames (121) of the stand of the walking type rice transplanter in the inverted posture can be put on the left and right frames (121) as a fulcrum to return the walking type rice transplanter to the original posture in which the walking type rice transplanter is not inverted. The attitude of the machine can be changed easily.

Moreover, it was set as the structure which pinches | interposes and fixes the protective frame (51) provided in the front-end part of a walk type rice transplanter with the right and left front-and-rear frames (120).
Therefore, since the protective frame (51) is sandwiched and fixed between the left and right front and rear frames (120), the walking type rice transplanter can be reliably supported by the stand.

In addition, a stand for supporting the walking type rice transplanter in an inverted posture in which the front portion is downward is provided with an alignment portion (132) for aligning with another stand.
Therefore, when arranging the walk-type rice transplanters in an inverted posture, the position alignment unit (132) can be aligned and arranged, and a large number of walk-type rice transplanters can be efficiently arranged in the storage space of the warehouse or transportation means. Costs required for warehouses and transportation can be reduced.

Claims (4)

Walking type rice transplanter comprising left and right wheels (5), a center float (12a) disposed between the left and right wheels (5), and a side float (12b) disposed on the left and right outer sides of the left and right wheels (5) In the machine
A stand (119) is provided to support the machine body in an inverted posture with the front part of the aircraft facing downward.
The stand (119) includes a plurality of front and rear frames (120) extending in the front-rear direction and left and right frames (121) extending in the left-right direction connecting the front and rear frames (120).
The front / rear frame (120) is configured to be longer than the front / rear width of the body in the inverted posture, and the left / right width of the stand (119) is configured to be greater than the left / right spacing of the left / right wheels (5); The left and right side floats (12b) are configured to be smaller than the left-right distance,
The left and right frame (121) is formed with left and right extension portions (121a) extending outward from the left and right sides of the plurality of front and rear frames (120), and the lower bent portion (121b) is bent downward from the left and right extension portions (121a). And the front and rear frames (120) and the left and right frames (121) are connected by a frame connecting member (133),
A fork claw insertion portion (130) for inserting a lift fork claw is formed in a space formed by the frame connecting member (133), the left and right extension (121a), and the lower bent portion (121b). A walking type rice transplanter. The walking type rice transplanter according to claim 1, wherein the fork claw insertion part (130) is formed between the left and right of the center float (12a) and the side float (12b) . The stand (119) has a structure in which a protective frame (51) provided at the front of the fuselage is sandwiched between the front and rear frames (120) and fixed.
The walking type rice transplanter according to claim 1 , wherein the stand (119) is provided with an alignment portion (132) for aligning with another stand (119) . The walk type rice transplanter according to claim 1, wherein the left and right frames (121) are made of a rod having a circular cross section .

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