JP4726643B2 - Transplanter - Google Patents

Description

  The present invention relates to a transplanter capable of adjusting the planting depth of a planted body.

  In a transplanting machine for upland fields where pot seedlings such as vegetables are transplanted, a traveling machine body is supported by a wheel so that it can be raised and lowered. A grounding member (ground leveling roller) that follows is attached, and the traveling machine body is provided with a movable frame that is pivotally attached to the front part so as to swing up and down and supported by a soil covering member whose rear part rolls on the top surface. The movable body supports the planting body, detects the change in the height of the cocoon by swinging the swing arm or the movable frame up and down, and maintains the planting depth of the planting body at a predetermined level. A planting depth adjustment lever that changes and adjusts the relative height of the soil covering member to the movable frame is provided so that the traveling aircraft can be raised and lowered in response to the height change and the planting depth of the planted body can be changed. (For example, Patent Document 1)

In this type of conventional transplanter, only the relative height of the soil covering member with respect to the movable frame is changed and adjusted by operating the planting depth adjustment lever, and the height change adjustment of the grounding member with respect to the traveling machine body is performed. A grounding member height adjustment lever is provided separately from the planting depth adjustment lever, and the height of the grounding member can be adjusted with respect to the traveling aircraft by operating the planting depth adjustment lever. There was not (for example, patent document 1).
Japanese Patent Laid-Open No. 10-243712

  Therefore, in the conventional transplanter, when the relative height of the soil covering member with respect to the movable frame is changed by the operation of the planting depth adjusting lever, either the leveling member or the soil covering member floats and does not function. For this reason, it is necessary to adjust the height of the grounding member with respect to the traveling aircraft with the grounding member height adjustment lever at the same time as adjusting the planting depth with the planting depth adjustment lever. Adjustment was troublesome.

  Therefore, it is conceivable to construct the grounding member so that the height of the grounding member can be adjusted with respect to the traveling aircraft in conjunction with the operation of the planting depth adjustment lever, but simply in conjunction with the operation of the planting depth adjustment lever. When the height of the grounding member is changed, depending on the field conditions, it may be necessary to relatively adjust the grounding member and the soil covering member relative to each other. Cause inconvenience.

  Therefore, in view of the above problems, the present invention eliminates the trouble of changing the grounding member up and down in response to the vertical adjustment of the soil covering member when changing the planting depth, and uses a single lever. The planting depth can be easily adjusted, and the grounding member and the soil covering member can be easily adjusted up and down relatively.

The technical means of the present invention for solving this technical problem is that a traveling machine body is supported by wheels so that it can be raised and lowered, and a swinging arm pivotally supported by the traveling machine body so as to swing up and down is grounded on the upper surface of the heel. A grounding member that follows is attached, and the traveling body is provided with a movable frame that is pivotally attached to the front part so as to swing up and down and supported by a covering member that rolls on the top surface of the saddle. The planted body is supported by the frame, and the height change of the cocoon is detected so as to keep the planting depth of the planted body by detecting the height change of the cocoon by vertically swinging the swing arm or the movable frame. The planting depth adjustment lever for changing and adjusting the relative height of the soil covering member with respect to the movable frame so that the planting depth of the planting body can be changed and the planting depth of the planting body can be changed is transplanted. In the machine
The swing arm is used as a planting depth adjustment lever so that the grounding member changes its height with respect to the traveling body in conjunction with a change in the relative height of the covering member with respect to the movable frame by the planting depth adjustment lever. A grounding member height adjustment lever that is interlocked and connected, and adjusts the height of the grounding member relative to the traveling machine body separately from the soil covering member ,
The planting depth adjustment lever and the grounding member height adjustment lever are supported so as to be swingable about the same support shaft, and the covering member is moved against the movable frame by swinging around the support shaft of the planting depth adjustment lever. In order to change the relative height, the planting depth adjustment lever is connected to the soil covering member, and the swinging arm swings up and down by swinging around the support shaft of the grounding member height adjustment lever. A height adjustment lever is connected to the swing arm, and a locking member for locking and fixing the grounding member height adjustment lever at a plurality of positions around the support shaft is supported swingably around the support shaft, The planting depth adjustment lever is fixed to the planting depth adjustment lever so as to swing around the support shaft .

According to another technical means of the present invention, the soil covering frame is supported by the movable frame so as to be swingable up and down, the soil covering member is supported on the free end side of the soil covering frame, and the planting depth adjusting lever around the support shaft. The planting depth adjusting lever and the free end side of the cover soil frame are connected via the locking member so that the cover soil frame swings up and down by swinging of the cover soil frame.
In addition, another technical means of the present invention is to detect a change in the height of the cocoon by swinging up and down the swing arm when the swing arm swings up and down within a predetermined range. When the traveling body is moved up and down in response to a change in the height of the kite to maintain a fixed depth, the height of the kite changes due to the vertical swinging of the movable frame when the swing arm swings down more than a predetermined level. , And the traveling machine body is moved up and down in response to a change in the height of the rod to keep the planting depth of the planted body constant.

  Another technical means of the present invention is to detect a change in the height of the cocoon by the vertical swing of the movable frame when the movable frame swings up and down within a predetermined range, and to plant the planting depth. In response to changes in the height of the kite to keep the height constant, when the movable frame moves down and swings more than the specified level, the height change of the kite is detected by the vertical swing of the swing arm. Then, in order to keep the planting depth of the planted body constant, the traveling machine body is moved up and down in response to the height change of the rod.

  According to the present invention, the swinging arm of the grounding member is interlocked to the planting depth adjustment lever, and the grounding member is interlocked with the change in the relative height of the covering member with respect to the movable frame by the planting depth adjustment lever. Since the height is changed with respect to the traveling machine body, when changing the planting depth, the trouble of changing the grounding member up and down in accordance with the vertical adjustment of the soil covering member becomes unnecessary, and one planting depth The planting depth can be easily adjusted with the height adjustment lever. Further, since the grounding member height adjustment lever for changing the height of the grounding member with respect to the traveling machine body is provided separately from the soil covering member, the grounding member, the soil covering member, and the earthing member are operated by operating the grounding member height adjustment lever. It is also possible to easily adjust the relative up and down.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a transplanter 1 for transplanting seedlings of vegetables or the like to a ridge R. In the figure, the transplanter 1 is a walking type having a transplanter 3 and a steering handle 4 behind a traveling body 2, The soil block seedling is automatically planted at a predetermined interval on the ridge R while traveling in the longitudinal direction across R.

In addition, the advancing direction of the transplanter 1 is called the front-back direction, and the horizontal direction orthogonal to the advancing direction is called the left-right direction.
The traveling body 2 has a traveling machine body 8 mainly configured by mounting and fixing the mount 6 shown in FIG. 2 on the front portion of the transmission case 5 in a protruding manner and mounting an engine 7 and the like on the mount 6. The traveling machine body 8 is supported by a front wheel 10 and a rear wheel 11 provided on the left and right sides so as to be able to travel.

  The transplanting device 3 is provided on a transplanting frame 12 mounted on the rear side of the traveling machine body 8, a planting body 13 for planting seedlings on the heel R, and a seedling supply device 14 for supplying seedlings to the planting body 13. , Mainly composed of a soil cover to the root side of the planted seedling and a soil covering member (soil covering roller) 15 for suppressing the root portion, and when the ridge R is covered with a multi film, A drilling means for forming a planting hole is provided.

  The transplant frame 12 includes a fixed frame 12A having a front portion attached and fixed to the mission case 5, and a movable frame 12B having a front portion pivotally attached to the mission case 5 about the left and right axis 5A. The seedling supply device 14 is provided on the frame 12A, the steering handle 4 is attached to the rear end of the fixed frame 12A, and the planting body 13 and the soil covering member 15 are supported by the movable frame 12B.

  The planting body 13 is supported on the movable frame 12B side, and the planting body 13 swings back and forth while swinging up and down, so that the planting body 13 is vertically long with respect to the traveling body 2. It moves so as to draw a substantially elliptical orbit. Moreover, the planting body 13 is formed with a cylindrical body having an upper and lower opening at the top, and has an opener that can be opened and closed at the bottom. The planting body 13 is supplied with seedlings dropped at the upper end side of the track, and is lowered with the opener closed, and the lower part of the opener enters the ridge R on the lower side of the track. The planting hole is formed in the ridge R, and the seedling stored in the planting body 13 is dropped and released into the planting hole, whereby the seedling is planted in the ridge R.

The seedling supply device 14 is disposed on the front side of the seedling mounting base 25 and a seedling mounting base 25 that intermittently moves in the left-right direction so as to laterally feed a seedling tray provided with a large number of pot portions containing the soil block seedlings in the vertical and horizontal directions. And a seedling feeding device 26 that takes out the seedlings one by one from the seedling tray and transports them to the planting body 13.
In addition, the seedling placing stand 25 is provided with a vertical feed mechanism that vertically feeds the seedling tray by one pitch of the pot portion after the horizontal seedlings are taken out.

  As shown in FIGS. 1, 3 and 5, the soil covering member 15 is composed of a truncated cone-shaped roller, and a pair of right and left are disposed so as to sandwich the seedling planting portion on the rear side of the planting body 13. It rolls and moves on the upper surface of R, and the soil is pressed against the root side of the planted seedling from both the left and right sides to bring the soil together, and at the same time the strain is pressed down. The soil covering member 15 is rotatably supported by a rear portion of the soil covering frame 28 that is pivotally supported around a left and right axis 29 by a bracket 27 fixed to the rear portion of the movable frame 12B. The soil covering frame 28 is connected to the movable frame 12B via the planting depth adjusting mechanism 30, and the rear portion of the movable frame 12B is supported by the soil covering member 15. Therefore, the soil covering frame 28 is supported on the movable frame 12B so as to be swingable up and down, and the soil covering member 15 is rotatably supported on the free end side of the soil covering frame 28.

The planting depth adjusting mechanism 30 includes a planting depth adjusting lever 31 that can be swung around the left and right axes, a locking member 32 that locks the planting depth adjusting lever 31, and a planting depth. It is mainly composed of a connecting member (locking member for a grounding member height adjusting lever 101 described later) 33 for connecting the adjusting lever 31 and the covering frame 28.
The locking member 32 is formed of a plate material, and is disposed forwardly inclined below the grip portion 4A of the steering handle 4 (see FIG. 4), and is fixed to a bracket 35. The bracket 35 is a rear end of the movable frame 12B. It is fixed to an attachment member 34 that is attached and fixed to the portion, and is projected rearward and then extends upward.

As shown in FIG. 5, the locking member 32 is formed with a guide groove 36 that allows the planting depth adjustment lever 31 to swing, and the guide groove 36 has a planting depth adjustment lever 31. A plurality of locking portions 36 a that regulate the swinging are formed at intervals in the swinging direction of the planting depth adjustment lever 31.
The connecting member 33 is fitted around a cylindrical shaft 37 that passes through a middle portion of the left and right bracket 35 in the left-right direction and is fixed (or rotatably supported) thereto, and rotates around a support shaft 103 in the left-right direction described later. It is supported freely. The lower portion of the planting depth adjustment lever 31 is fixedly attached to the tube shaft 37 via a mounting plate 37 a by bolts and nuts, and the planting depth adjustment lever 31 can be swung around the support shaft 103. ing. In addition, the planting depth adjustment lever 31 is provided with a locked portion 31 a that fits into the locking portion 36 a of the guide groove 36.

  The planting depth adjusting lever 31 is urged by an urging means such as a spring so that the locked portion 31a is fitted into the locking portion 36a, and its swinging is restricted. By swinging the planting depth adjusting lever 31 by gripping the gripping portion of the planting depth adjusting lever 31 and tilting the locked portion 31a away from the locking portion 36a against the urging force. It is configured to be operable.

  On the other hand, the front lower end side of the connecting member 33 is pivotally supported via a left and right support shaft 39 on a bracket 38 that is externally fitted around and supported by the center portion of the rear portion of the cover frame 28 in the left and right direction. It is connected. Therefore, the planting depth adjustment lever 31 and the free end side of the covering soil frame 28 are connected via the locking member 33 (connection member 33), and the planting depth adjustment lever 31 swings around the support shaft 103. Thus, the soil covering frame 28 swings up and down.

  Therefore, by swinging the planting depth adjustment lever 31 downward, the covering member 15 is lifted with respect to the movable frame 12B, and the distance from the movable frame 12B is narrowed. Swinging upward, the cover member 15 is lowered with respect to the movable frame 12B, and the distance from the movable frame 12B is increased (therefore, the vertical swing position of the cover member 15 with respect to the movable frame 12B can be adjusted). As a result, the movable frame 12B swings up and down, and the depth of penetration of the planted body 13 into the ridge R, that is, the seedling planting depth can be changed.

In the illustrated example, the height of the movable frame 12B increases as the locking position of the planting depth adjusting lever 31 with respect to the locking portion 36a increases, and the planting depth decreases, and the planting depth decreases as it goes downward. It is like that.
As shown in FIGS. 2 and 6, a support cylinder 54 having a horizontal axis is fixed to the front portion of the gantry 6 of the traveling body 2, and a pair of left and right front wheel support shafts 55 are fixed to the support cylinder 54. The inner end side in the left-right direction is inserted so as to be rotatable around the left-right axis, and a mounting cylinder 56 is fitted on the outer end side in the left-right direction of each of the left and right front wheel support shafts 55.

The upper end side of the front wheel support arm 57 is connected and fixed to each of the left and right mounting cylinders 56, and the front wheel 10 is attached to the lower end side of each front wheel support arm 57 so as to be rotatable around the left and right axis via an axle.
The outer end side of the left and right front wheel support shaft 55 and the mounting cylinder 56 are formed in a hexagonal cross section so as to rotate integrally, and the left and right front wheels 10 swing up and down around the front wheel support shaft 55. It is supposed to be free.

The outer end side of the left and right front wheel support shaft 55 and the mounting cylinder 56 are fixed by pins passing through both, and there are a plurality of pin insertion holes formed on the outer end side of the left and right front wheel support shaft 55 in the axial direction. The left and right positions of the front wheel 10 can be adjusted (that is, the distance of the front wheel 10 can be adjusted).
The rotational power of the engine 7 is input to the transmission case 5 and linked to the rear wheel 11 provided under the transmission case 59 via a chain winding transmission mechanism in the transmission case 59. Is driven to rotate.

The left and right transmission cases 59 can be independently moved in two positions in the left-right direction, and the distance of the rear wheel 11 can be adjusted by moving the transmission case 59 left and right. It can cope with the difference (growth and narrow) of the ridge width between the ridge and the open-air high ridge.
A rolling shaft 61 arranged in the left-right direction is supported at the front-rear intermediate portion of the gantry 6 via a bearing body 62 so as to be rotatable around the left-right axis and to be movable back and forth. A lifting cylinder 63 made of a hydraulic cylinder is disposed in front and fixed to the gantry 6. The piston rod 63A of the elevating cylinder 63 is connected to the rolling shaft 61 via a cylindrical body or the like that is externally fitted to the shaft 61 so that the rolling shaft 61 can be moved forward and backward by the piston rod 63A. It can be moved.

The rolling shaft 61 can be fixed to the gantry 6 by fixing means.
As shown in FIGS. 2 and 6, brackets 64L and 64R are fixed to the left and right sides of the rolling shaft 61, and front connection brackets 65L and 65R are fixed to the left and right front wheel support shafts 55. The rear connection brackets 66L and 66R are fixed, the right bracket 64R protrudes downward, and the left bracket 64L and the front and rear connection brackets 65L, 65R, 66L, and 66R protrude upward. Yes.

The brackets 64L and 64R and the rear connection brackets 66L and 66R are connected by a connection link 67, and the front connection brackets 65L and 65R and the rear connection brackets 66L and 66R are connected by a connection rod 68.
Note that a pair of left and right connection portions of the brackets 64L and 64R and the front side connection brackets 65L and 65R are provided so that the left and right positions of the transmission case 59 can be adjusted.

  Then, by moving the piston rod 63A of the elevating cylinder 63 back and forth, the left and right connecting links 67 are pushed back and forth so that the transmission case 59 is relative to the traveling machine body 8 via the rear connecting brackets 66L and 66R. In addition, the connecting rod 68 is pushed back and forth, and the front wheel support arm 57 is moved relative to the traveling machine body 8 via the front connecting brackets 65L and 65R, the front wheel support shaft 55 and the mounting cylinder 56. The left and right front and rear wheels 10 and 11 are moved up and down relative to the traveling machine body 8 at the same time and the front and rear wheels 10 and 11 are grounded. The transplanter 3 can be moved up and down with respect to the heel R so as to follow the change in the height of the upper surface of the heel R.

  A rolling cylinder 69 made of a hydraulic cylinder is attached to the gantry 6 so as to move along with the rolling shaft 61. A piston rod 69 A of the rolling cylinder 69 is pivotally attached to a bracket 70 fixed to the rolling shaft 61. Therefore, by moving the piston rod 69A of the rolling cylinder 69 back and forth, the rolling shaft 61 rotates about the left and right axis, and the one right and left connection link 67 is pulled forward and the one right and left connection rod 68 moves forward. The left and right other connecting links 67 are pushed rearward and the left and right other connecting rods 68 are pulled rearward, thereby maintaining the traveling body 8 and the transplanting device 3 in a horizontal state even on an inclined ground. Can be done.

  As shown in FIGS. 1, 3, and 4, the rear surface of the transmission case 5 is located below the front side of the planting body 13, and the upper surface of the ridge R is rolled to detect the height change of the ridge R. In addition, a grounding member (leveling roller) 71 composed of a roller for suppressing the upper surface of the ridge R is disposed. On both the left and right sides of the grounding member 71 and the left and right sides of the transmission case 5, the swinging arms 72 are moved upward as they move forward. It is arranged in a forward inclined shape so as to shift to

  Further, the swing arm 72 is supported so as to be swingable around the left and right axes by a support shaft 73 that has a front portion passing through the swing arm 72 and screwed into the transmission case 5, and a pivot at the rear portion. A grounding member 71 is rotatably attached to the left and right axes via 74, and the rear ends of the left and right swing arms 72 are connected to each other by a connecting member 75. Therefore, when the grounding member 71 follows the height change of the top surface of the heel R, the swing arm 72 swings around the support shaft 73 and detects the height change of the heel R.

A locking arm portion 76 extending forward is integrally formed at the front portion of the left swing arm 72, and the left support shaft 73 is interlocked and connected to a control valve 77 that controls the elevating cylinder 63. An interlocking member 78 is supported so as to be swingable relative to the swing arm 72 around the left and right axis.
Spring engaging portions 76a and 78a are provided at the front portions of the locking arm portion 76 and the interlocking member 78, respectively, and biasing means 79 made of a tension coil spring is interposed between the spring engaging portions 76a and 78a. The swing arm 72 and the grounding member 71 are biased in the grounding direction. Further, an attachment portion 81 is provided at the rear portion of the interlocking member 78 to attach the front end side of the outer cable 80A of the Bowden cable (regulating means) 80 so that the attachment in the length direction can be adjusted. Further, the front end side of the inner cable 80B of the Bowden cable 80 is inserted into the insertion hole formed in the locking portion 82 provided in the swing arm 72 so as to be movable in the longitudinal direction, and is inserted into the distal end portion of the inner cable 80B. By fixing the contact member 107 that does not pass through the hole, the inner cable 80B is locked to the locking portion 82, and the swinging arm 72 swings around the support shaft 73 by the biasing force of the biasing means 79. Is regulated.

The urging force of the urging means 79 does not extend due to the pressing force from the ground acting on the grounding member 71 during normal planting work, and therefore swings when the grounding member 71 follows the upper surface of the ridge R. The arm 72 and the interlocking member 78 are integrally swung around the support shaft 73.
An arc-shaped elongated hole 83 is formed in the front upper portion of the interlocking member 78, and a pin 84 is slidably fitted into the elongated hole 83. It is pivotally connected to one end.

  A middle portion of the lift valve arm 85 is supported by a body of the control valve 77 fixed to the upper portion of the mission case 5 via a support shaft 86 so as to be rotatable about a lateral axis. 4 can be swung downward, neutral, and raised, and an engagement groove 87 is formed at the other end of the lift valve arm 85. The engaging groove 87 is engaged with a pin 88 a provided on one end side of an operation lever 88 constituted by a bell crank, and a middle portion of the operation lever 88 is attached to a rotary spool 89 of the control valve 77. Yes.

  Therefore, when the grounding member 71 is lowered, the swinging arm 72 and the interlocking member 78 swing around the support shaft 73 in the clockwise direction in FIG. 1, and the lift valve arm 85 is rotated around the support shaft 86 in the counterclockwise direction in FIG. As a result, one end of the operation lever 88 is pulled up, and the rotary spool 89 of the control valve 77 is operated in a direction to lower the traveling machine body 8, and the piston rod 63A of the elevating cylinder 63 operates in the retracting direction. The traveling machine body 8 is lowered until the rotary spool 89 returns to the neutral position.

  When the grounding member 71 is raised, the swing arm 72 and the interlocking member 78 are rotated in the counterclockwise direction in FIG. 1 around the support shaft 73, and the lift valve arm 85 is rotated in the clockwise direction in FIG. As a result, one end of the operation lever 88 is pulled down, and the rotary spool 89 of the control valve 81 is operated in a direction to raise the traveling machine body 8, and the piston rod 63A of the elevating cylinder 63 operates in the protruding direction. The traveling machine body 8 is raised until the rotary spool 89 returns to the neutral position.

The arc shape of the long hole 83 is an arc having a radius such that the swinging motion of the lifting / lowering valve arm 85 about the support shaft 86 is proportional to the swinging motion of the swinging arm 72 about the support shaft 73. The height change of the ridge R is accurately transmitted to the control valve 77. The radius of the long hole 83 is determined by simulation by CAD or by calculation.
One end side of a sensitivity spring 90 made of a tension spring is hooked to the other end side of the operation lever 88, and the other end side of the sensitivity spring 90 is hooked to a hook member attached and fixed to the fixed frame 12A side. By changing the latching position of the sensitivity spring 90 to the latching member, the pressing force of the grounding member 71 against the upper surface of the heel R can be changed, and thereby the follow-up sensitivity of the grounding member 71 with respect to the upper surface of the heel R can be adjusted. It has become.

  As shown in FIGS. 3 and 4, the movable frame 12 </ b> B and the lift valve arm 85 are interlocked and connected by an interlocking mechanism 92. The interlocking mechanism 92 includes a bell crank 93 pivotally attached to the fixed frame 12A so as to be rotatable around the left and right axes, a link 94 that interlocks and connects one end of the bell crank 93 and the movable frame 12B, and a bell crank 93. The other end side and the interlocking rod 96 for interlockingly connecting the connecting plate 95 fixed to the lift valve arm 85, and the middle part of the interlocking rod 96 has a turnbuckle structure.

  The interlocking rod 96 and the connecting plate 95 are configured such that a pin 97 pivotally attached to the connecting plate 95 is slidable in the front-rear direction in a longitudinal hole 99 formed in a connected plate 98 fixed to the interlocking rod 96. It is interlocked and connected by fitting. As a result, even if the grounding member 71 moves up and down during the planting operation, the pin 97 slides relatively in the elongated hole 99, allowing the grounding member 71 to move up and down and the planting depth. Even when the movable frame 12B swings up and down during adjustment, the control valve 77 is not affected. Further, when planting near the exit of the ridge R (the end in the planting direction), when the grounding member 71 is detached from the ridge R, the pin 97 is locked to the front end of the long hole 99. Thus, the grounding member 71 is suspended, and the soil covering member 15 serves as a detection roller for detecting the height of the upper surface of the basket R so as to control the elevation of the traveling machine body 8.

  As shown in FIGS. 1, 3, and 5, the ground member 71 can be adjusted in height relative to the mission case 5 by the vertical adjustment mechanism 100. This vertical adjustment mechanism 100 is mainly composed of a grounding member height adjusting lever 101 that can be swung around a left and right axis, a locking member 33 (the connecting member 33), and the Bowden cable 80. By swinging the member height adjusting lever 101, the relative height of the grounding member 71 with respect to the transmission case 5 (the traveling machine body 8) can be easily adjusted.

  Similar to the locking member 32, a guide groove 102 that allows the grounding member height adjustment lever 101 to swing is formed in the locking member 33 on the left side of the guide groove 36. A plurality of locking portions 102a for restricting the swing of the grounding member height adjusting lever 101 are formed at intervals in the swinging direction of the grounding member height adjusting lever 101, and the locking member 33 is configured by the grounding member height adjusting lever 101. 101 is guided around the support shaft 103, and the grounding member height adjusting lever 101 is locked and fixed at a plurality of positions around the support shaft 103.

  The grounding member height adjusting lever 101 is disposed on the left side of the planting depth adjusting lever 31 of the planting depth adjusting mechanism 30 and is fixed to the support shaft 103 that is inserted in the cylinder shaft 37 so as to be relatively rotatable. It is fixedly attached to the relay lever 104 and is supported so as to be swingable around the support shaft 103. Further, the grounding member height adjusting lever 101 is provided with a locked portion 101 a that fits into the locking portion 102 a of the guide groove 102.

  As with the planting depth adjustment lever 31, the grounding member height adjustment lever 101 is urged by an urging means such as a spring so that the locked portion 101a is engaged with the locking portion 102a. Oscillation is restricted, and the gripping portion of the grounding member height adjusting lever 101 is gripped and tilted so that the locked portion 101a is disengaged from the locking portion 102a against the urging force. The grounding member height adjusting lever 101 can be swung.

The rear end side of the outer cable 80A of the Bowden cable 80 is attached to the attachment member 34 and the like so that the position in the length direction can be adjusted, and the rear end side of the inner cable 80B is pivotally attached to the relay lever 104.
Therefore, the planting depth adjustment lever 31 and the grounding member height adjustment lever 101 are supported so as to be swingable around the same support shaft 103. The planting depth adjusting lever 101 is connected to the soil covering member 15, and the soil covering member 15 changes the relative height with respect to the movable frame 12 </ b> B by swinging the planting depth adjusting lever 31 around the support shaft 103. The locking member 33 is supported by the planting depth adjustment lever 31 so as to swing around the support shaft 103 and swings around the support shaft 103 together with the planting depth adjustment lever 31. Thus, the grounding member height adjusting lever 101 to the swing arm 72 are interlocked and connected to the planting depth adjusting lever 31 via the locking member 33, and the soil covering member 15 by the planting depth adjusting lever 31 is connected. The ground contact member 71 changes the height relative to the traveling machine body 8 in conjunction with the change in the relative height with respect to the movable frame 12B. In the present embodiment, since the vertical swing range of the grounding member 71 is regulated to a predetermined width by the Bowden cable 80, the relative height of the soil covering member 15 relative to the movable frame 12B by the planting depth adjustment lever 31 is adjusted. In conjunction with the change, the upper limit height of the vertical swing range of the grounding member 71 is changed.

  Further, a grounding member height adjusting lever 101 for changing the height of the grounding member 71 relative to the traveling machine body 8 separately from the soil covering member 15 is provided, and the grounding member height adjusting lever 101 swings around the support shaft 103. Accordingly, the grounding member height adjusting lever 101 is connected to the swing arm 72 so that the swing arm 72 swings up and down. Therefore, by swinging the grounding member height adjusting lever 101 downward, the inner cable 80B is pulled, and the swing arm 72 moves around the support shaft 73 against the biasing force of the biasing means 79 as shown in FIG. The ground contact member 71 moves upward relative to the mission case 5. At this time, since the interlocking member 75 is interlocked and connected to the control valve 77, the swing arm 72 swings relative to the interlocking member 75. In the state where the grounding member 71 is in contact with the upper surface of the heel R, the rotary spool 89 of the control valve 77 is moved in the direction of lowering the traveling machine body 8 in accordance with the amount of the swinging arm 72 swinging. Airframe 8 descends.

  In the state where the traveling machine body 8 is raised and the grounding member 71 is lifted from the upper surface of the heel R, the biasing force of the biasing means 79 is reversed by swinging the grounding member height adjustment lever 101 upward. As a result, the inner cable 80B is pulled, the swing arm 72 swings in the clockwise direction in FIG. 1, and the grounding member 71 moves downward relative to the mission case 5. When the grounding member 71 is in contact with the upper surface of the heel R, the rotary spool 89 of the control valve 77 is moved in the direction of raising the traveling machine body 8 in correspondence with the swinging movement of the swinging arm 72. Airframe 8 rises.

  In the above configuration, as described above, the biasing means 79 does not extend by the pressing force from the ground during normal planting work, and the swing arm 72 and the interlocking member 78 swing integrally. However, when the traveling machine body 8 is lowered with the engine 7 turned off (that is, when the hydraulic pump is not operating), when the interlocking member 78 does not swing due to the restriction on the control valve 77 side, The swing arm 71 swings upward relative to the interlocking member 78 against the urging force of the urging means 79 with respect to the pushing up. At this time, since the inner cable 80A is movable in the length direction in the insertion hole of the locking portion 82, the locking portion 82 moves along the length direction with respect to the inner cable 80A. Allow swinging.

The swing arm 71 swings to prevent damage to the rotary spool 89, the pins 84 and 88a, the support shaft 86, and the like of the control valve 77.
Moreover, in the thing of the said structure, since the earthing | grounding member height adjustment lever 101 thru | or the rocking | swiveling arm 72 are interlockingly connected with the planting depth adjustment lever 31 via the locking member 33, one By swinging the planting depth adjusting lever 31, the relative height of the covering member 15 with respect to the movable frame 12B can be changed, and at the same time, the height of the grounding member 71 with respect to the traveling machine body 8 can be changed. When changing the planting depth, there is no need for troublesome adjustment of the grounding member 71 in correspondence with the covering member 15, and the planting depth by the planting body 13 is adjusted by the single planting depth adjusting lever 31. Can be adjusted easily. In addition, by swinging the grounding member height adjusting lever 101, the grounding member 71 can be adjusted to change the height separately from the soil covering member 15 with respect to the traveling machine body 8, and the grounding member height adjusting lever 101 can be adjusted. By the above operation, the grounding member 71 and the soil covering member 15 can be easily adjusted up and down relatively. For this reason, since the phase of the grounding member 71 and the covering member 15 can be set by shifting with one touch, it is possible to cope with various conditions, which is very convenient.

  FIGS. 7 and 8 illustrate another configuration of the transplant height adjusting mechanism portion of the transplanter, in which the planting depth adjusting lever 31, the Bowden cable 80, and the L-shaped interlocking member 78 are omitted and interlocked. Instead of the member 78, a vertical interlocking member 121 that connects the swing arm 72 and the lift valve arm 85 is provided. The upper end portion of the interlocking member 121 is connected to the lower end portion of the elevating valve arm 85 so as to be swingable around the left and right axis, and a vertical hole 122 is formed in the lower end portion of the connecting member 121. The engaging pin 123 protruding from the moving arm 72 is fitted so as to be slidable in the vertical direction. As a result, even when the grounding member 71 moves up and down within a predetermined range during the planting operation, the engaging pin 123 is a long hole. The lift valve arm 85 is configured to slide relative to the inner surface 122 and not move in conjunction with the vertical movement of the grounding member 71. Further, a coil spring 125 is interposed between the spring hooking portion 76a of the locking arm portion 76 and the traveling machine body 8 side, and the swing arm 72 and the grounding member 71 are urged by the coil spring 125 in the grounding direction.

Further, a round hole 127 is formed in the coupled plate 98 in place of the long hole 99, and the interlocking rod 96 and the coupling plate 95 are arranged so that the pin 97 of the coupling plate 95 is inserted back and forth in the round hole 127 of the coupled plate 98. It is interlocked and connected by being fitted so that it cannot slide in the direction. The other points are the same as those in the above embodiment.
Thus, when the movable frame 12B swings up and down within a predetermined range, the height change of the heel is detected by the vertical swing of the movable frame 12B, and the planting depth of the planting body 13 is kept constant. When the traveling machine body 8 is moved up and down in response to the change in the height of the kite and the movable frame 12B is lowered and swung more than a predetermined level, the swing arm 71 detects the change in the height of the kite by swinging up and down. In order to keep the planting depth of the planting body 13 constant, the traveling machine body 8 is moved up and down in response to a change in the height of the heel, so that the grounding member 71 moves up and down during the planting operation. Even if it moves, the engaging pin 123 slides relatively in the elongated hole 122, and the vertical movement of the grounding member 71 is allowed, and the covering member 15 senses the height of the ridge, and the upper limit of the movable frame 12B. The traveling machine body 8 rises near and the traveling machine near the lower limit of the movable frame 12B. 8 is lowered. At the intermediate position, the unevenness of the heel R is followed by the swing of the movable frame 12B, and the height of the traveling machine body 8 is held by the leveling member 71 at the beginning of the heel so that planting is possible from the beginning of the heel. Moreover, the planting depth by the planting body 13 can be adjusted with one planting depth adjusting lever 31, which is convenient. Since the soil covering member 15 closer to the planting body 13 than the grounding member 71 senses the change in the height of the cocoon, it responds sensitively to the unevenness of the cocoon and makes the planting depth by the planting body 13 more accurate and constant. Can be held in. In addition, the height of the traveling machine body 8 can be held by the ground contact member 71 at the beginning of the cocoon, and can be planted from the beginning of the cocoon.

  In the above embodiment, when the swing arm 71 swings up and down within a predetermined range, a change in the height of the ridge is detected by swinging the swing arm 71 up and down, and the planting body 13 is planted. When the traveling machine body 8 is moved up and down in response to a change in the height of the kite to keep the depth constant, and the swing arm 71 descends and swings more than a predetermined level, the height of the kite is increased by the vertical swing of the movable frame 12B. In order to keep the planting depth of the planted body 13 constant by detecting the change in height, the traveling machine body 8 is raised and lowered in response to the height change of the heel. Similarly to the example of the transplanter shown in FIG. 8, when the movable frame 12B swings up and down within a predetermined range, the height change of the heel is detected by the vertical swing of the movable frame 12B, and the planting body 13 is detected. In order to keep the planting depth constant, the traveling body 8 is moved up and down in response to the height change of the heel, When the moving frame 12B descends and swings more than a predetermined value, a change in the height of the heel is detected by swinging the swing arm 71 up and down, so that the planting depth of the planting body 13 is kept constant. You may make it raise / lower the traveling body 8 corresponding to the height change.

It is a side view of the transplanter which shows one Embodiment of this invention. It is a top view of the traveling body of the transplanter. It is a side view of the raising / lowering mechanism and heel height detection mechanism part of the transplanter. It is a side view of the heel height detection mechanism part of the transplanter. It is a top view of the planting depth adjustment lever and the grounding member height adjustment lever part. It is a side view of the raising / lowering mechanism part of the transplanter. It is a side view of the raising / lowering mechanism and heel height detection mechanism part which show other embodiment. It is a side view of the same raising / lowering valve arm part.

Explanation of symbols

8 traveling machine body 10 front wheel 11 rear wheel 12B movable frame 13 planting body 15 soil covering member (soil covering roller)
28 Covering frame 31 Planting depth adjusting lever 33 Locking member 71 Grounding member (leveling roller)
72 Swing arm 101 Grounding member height adjustment lever 103 Support shaft

Claims (4)

The traveling machine body (8) is supported by the wheels (10, 11) so as to be able to move up and down. The swinging arm (72) pivotally supported by the traveling machine body (8) is grounded on the upper surface of the heel and follows. A grounding member (71) is attached, and a movable part supported by a soil covering member (15) whose front part is pivotally attached to the traveling body (8) so as to swing up and down and whose rear part rolls on the top surface. A frame (12B) is provided, and the planted body (13) is supported on the movable frame (12B), and a change in the height of the heel is detected by vertically swinging the swing arm (72) or the movable frame (12B). In order to keep the planting depth of the planted body (13) at a predetermined level, the traveling machine body (8) is raised and lowered in response to the height change of the heel, and the planting depth of the planted body (13) is increased. In order to be able to change the phase of the cover member (15) relative to the movable frame (12B) In the planting depth adjustment lever (31) is provided transplanter for changing adjusting the height,
The height of the grounding member (71) is changed with respect to the traveling machine body (8) in conjunction with the change of the relative height of the soil covering member (15) with respect to the movable frame (12B) by the planting depth adjusting lever (31). Thus, the swing arm (72) is interlocked with the planting depth adjustment lever (31), and the grounding member (71) is raised with respect to the traveling machine body (8) separately from the soil covering member (15). A grounding member height adjusting lever (101) to be adjusted is provided ,
The planting depth adjusting lever (31) and the grounding member height adjusting lever (101) are supported so as to be swingable around the same support shaft (103), and the support shaft of the planting depth adjusting lever (31) is supported. (103) The planting depth adjustment lever (31) is connected to the soil covering member (15) so that the soil covering member (15) changes the relative height with respect to the movable frame (12B) by swinging around. The grounding member height adjusting lever (101) is pivoted so that the swinging arm (72) swings up and down by swinging around the support shaft (103) of the grounding member height adjusting lever (101). , And a locking member (33) for locking and fixing the grounding member height adjusting lever (101) at a plurality of positions around the support shaft (103) is supported swingably around the support shaft (103). And support shaft (with planting depth adjustment lever (31)) 03) transplanter, characterized in that it is fixed to the planting depth adjustment lever so as to swing around (31). The cover frame (28) is supported by the movable frame (12B) so as to swing up and down, the cover member (15) is supported on the free end side of the cover frame (28), and the planting depth adjustment lever (31) The planting depth adjusting lever (31) and the free end side of the covering soil frame (28) are connected to the locking member (so that the covering soil frame (28) swings up and down by swinging around the support shaft (103). 33. The transplanter according to claim 1, wherein the transplanter is connected via 33) . When the swing arm (72) swings up and down within a predetermined range, the swing arm (72) swings up and down to detect a change in the height of the heel, and the planting depth of the planting body (13) The movable frame (12B) swings up and down when the traveling machine body (8) is moved up and down in response to a change in the height of the kite and the swinging arm (72) swings down more than a predetermined level. By detecting the height change of the cocoon, the traveling body (8) is moved up and down in response to the height change of the heel so as to keep the planting depth of the planting body (13) constant. The transplanter according to claim 1 or 2 , characterized by the above. When the movable frame (12B) swings up and down within a predetermined range, the height change of the ridge is detected by the vertical swing of the movable frame (12B), and the planting depth of the planting body (13) is constant. When the traveling machine body (8) is moved up and down in response to the change in the height of the kite to hold it, and the movable frame (12B) is lowered and swung more than a predetermined level, the swing arm (72) swings up and down. The height of the vehicle is detected, and the traveling body (8) is raised and lowered in response to the height change of the ridge so as to keep the planting depth of the planting body (13) constant. The transplanter according to claim 1 or 2 .

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