JP5548442B2 - Transplanter - Google Patents

Description

  The present invention relates to a transplanter.

  Conventionally, as a transplanting machine for planting seedlings on the heel while running across the heel by providing front and rear wheels on both the left and right sides of the traveling machine body, the traveling machine body is moved by moving the front and rear wheels provided on the left and right sides of the traveling machine body up and down simultaneously. The traveling machine body can be moved up and down by moving the left and right front and rear wheels up and down in the opposite directions by detecting the left and right inclination of the traveling machine body with respect to the vertical direction by a pendulum member that can be moved up and down and swingable to the left and right. There is a walking type transplanter that can be automatically adjusted (automatic horizontal control) to be approximately horizontal.

In this transplanter, when a seedling is planted in a ridge formed in a direction crossing in an inclined direction on an inclined land, the front and rear wheels on the mountain side rise and the front and rear wheels on the valley side move down and the traveling machine body becomes horizontal. It is automatically adjusted (corrected) so that
By the way, for example, when making a ridge in a direction crossing the inclination direction on an inclined land, the ridge is formed so that the center of the ridge width direction of the upper surface of the ridge is shifted from the center of the ridge width direction of the ridge to the mountain side. The For this reason, when a seedling is planted on the cocoon by straddling the heel with the transplanter (with the heel positioned between the left and right front and rear wheels of the transplanter), the transplanted body of the transplanter is centered in the lateral direction of the traveling body ( Therefore, there is a problem that seedlings cannot be planted at the center of the upper surface of the cocoon in the cocoon width direction.

Therefore, in such a case, the planting body is positioned at the center of the ridge width direction on the slope by manually tilting the traveling body left and right at an arbitrary angle so that automatic horizontal control of the traveling body does not occur. It is possible to plant seedlings at approximately the center of the upper surface of the cocoon.
Patent Document 1 discloses a walking type transplanter capable of manually adjusting the left and right inclination of the traveling machine body to an arbitrary angle.

The transplanter includes a lock pin that restricts the swinging of the pendulum member by detachably engaging with a pendulum member provided on the traveling machine body, an angle operation lever that operates the lock pin, and the angle operation. An interlocking mechanism for interlockingly connecting the lever and the lock pin is provided.
The transplanter capable of automatic horizontal control is configured to move the left and right front and rear wheels up and down in opposite directions by a rolling cylinder made of a hydraulic cylinder, and includes a rolling valve for controlling the rolling cylinder.

When the traveling machine body tilts to the left or right, the pendulum member swings in the tilted direction and the spool of the rolling valve is operated, whereby the rolling cylinder is actuated to correct the inclination of the traveling machine body (the traveling machine body is horizontal). The left and right front and rear wheels move up and down.
The angle operation lever is supported so as to be swingable up and down and left and right. By swinging the angle operation lever upward, the lock pin engages with the pendulum member and the pendulum member swings left and right. The lock pin is immovably locked, and the lock pin is separated from the pendulum member by swinging the angle operation lever downward, so that the pendulum member is allowed to swing left and right.

Further, the lock pin is swung left and right by swinging the angle operation lever left and right.
In this transplanter, in order to manually operate the right and left inclination of the traveling machine body to an arbitrary angle, the angle operation lever is swung upward to engage the lock pin with the pendulum member, and in this state, the angle operation lever Swinging from the neutral position to the left or right side, the traveling machine body tilts to the left or right side, and when the traveling machine body tilts to the desired angle, the angle control lever is returned to the neutral position to hold the traveling machine body at the tilted inclination angle. It is comprised so that.

Japanese Patent No. 3936807

In a walking type transplanter, after planting seedlings to the edge of the cocoon and then planting seedlings on the adjacent cocoon, turn on the headland, but at this time raise the traveling aircraft and be behind the traveling aircraft Push down on the steering handle to lift the front wheels and turn in this state.
In addition, when the transplanting machine described in Patent Document 1 is used to perform planting work by manually tilting the traveling machine body to the left and right at an arbitrary angle and aligning the planted body with the approximate center of the heel on an inclined ground, When turning the transplanter on the end side, the front and rear wheels on the mountain side and the front and rear wheels on the valley side are reversed. The member must be unlocked.

  Therefore, in the transplanter of Patent Document 1, in the case where a seedling is planted in a ridge formed in a direction crossing in an inclined direction on an inclined land, the traveling machine body is manually tilted to the left and right at an arbitrary angle, and the approximate center of the heel When the planting body is made to coincide with the planting body, in order to turn the transplanting machine on the end side of the heel, an operation to raise the traveling machine body and a swing operation of the angle operation lever downward are performed. An operation to separate from the pendulum member must be performed.

Therefore, in the transplanter described in Patent Document 1, the operation of unlocking the pendulum member at the time of turning is troublesome in the planting work on an inclined land, and there is a problem in operability at the time of turning.
Therefore, in view of the above problems, the present invention provides a transplanter with good operability when turning on an inclined ground while being a transplanter capable of manually adjusting the right and left tilt of the traveling machine body to an arbitrary angle. The task is to do.

The technical means taken by the present invention in order to solve the technical problem includes a traveling body that is supported by a propulsion mechanism provided on both the left and right sides of the traveling body so that the traveling body can travel. The left and right propulsion mechanisms can be moved up and down simultaneously by moving the left and right propulsion mechanisms up and down and the left and right propulsion mechanisms are detected by detecting the left and right inclinations of the traveling machine body with respect to the vertical direction by a pendulum member provided on the traveling body so as to be able to swing left and right Can be automatically adjusted so that the traveling aircraft is approximately horizontal by moving the up and down in opposite directions,
A rolling cylinder that moves the right and left propulsion mechanisms up and down in opposite directions is provided and a rolling valve that controls the rolling cylinder is provided,
A lock member is provided that locks the pendulum member so as not to swing by engaging with the pendulum member in a detachable manner,
Provided with a lock lever that is supported so as to be able to swing, and that engages and disengages the lock member with respect to the pendulum member by swinging operation,
Automatic unlocking that swings the lock lever so that the lock member is disengaged when the traveling body is raised while the lock lever is swung so that the lock member is engaged with the pendulum member Provided a mechanism,
The rolling valve can be operated so that the traveling body can be tilted left and right by a manual operation of the angle operation lever in a state in which the pendulum member cannot be swung with respect to the traveling body by the lock member. Provide a manual angle adjustment mechanism,
Attach the angle control lever to the lock lever to swing the lock lever with the angle control lever ,
The spool operating lever that operates the spool of the rolling valve by swinging, the swing transmission mechanism that transmits the swinging motion of the pendulum member to the spool operating lever, and the spool operating lever by operating the angle operating lever manually. And an engaging member that engages with the spool operating lever.
When the spool operation lever is operated by the angle operation lever in a state in which the pendulum member cannot be swinged by the lock member, the spool operation lever is allowed to swing.
A swing permission means is provided between the engagement member and the spool operation lever to permit swinging of the pendulum member within a predetermined range when the engagement member is not operated by the angle operation lever. .

The swing transmission mechanism is configured to transmit the swing motion of the pendulum member to the spool operation lever via the spring member ,
The spring member to operate the spool operating lever by an angle lever is adapted to swing the spool operating lever is permitted by elastic deformation in a state where the locking member is a pendulum member is impossible swing It is good to be.

  In addition, a pair of contact portions is provided on one of the engagement member or the spool operation lever, and a contact portion located between the pair of contact portions is provided on the other, and is engaged by the angle operation lever. When the member is operated, the contact portion and the contact portion come into contact with each other so that the operation force of the angle operation lever is transmitted to the spool operation lever, and between the pair of contact portions. The interval may be formed to allow the swinging of the pendulum member within a predetermined range.

  According to the present invention, in the transplanter capable of automatically adjusting the traveling aircraft body to be horizontal by detecting the left and right inclination of the traveling aircraft body with the pendulum member and moving the left and right propulsion mechanisms up and down in opposite directions, The pendulum member can be locked so that the horizontal automatic control of the traveling machine body is not affected, and the traveling machine body can be manually tilted to any angle to the left and right, and the edge of the kite with the traveling machine body tilted to any angle When the traveling body is raised to turn the transplanter on the side, the pendulum member is automatically unlocked and the traveling body is automatically leveled.

As a result, it is possible to tilt the traveling machine body at an arbitrary angle to the left and right so that the pendulum member can be locked on a sloping ground and to plant seedlings at the approximate center of the top surface of the reed, and turn on a headland on the end of the reed. In doing so, it is possible to smoothly perform the turning operation because it automatically returns to the horizontal control state only by raising the traveling machine body without performing the unlocking operation of the pendulum member.
Therefore, it is possible to provide a transplanter with good operability during turning while being a transplanter capable of manually changing the right and left tilt angles of the traveling machine body.

In addition, since the traveling machine body can be tilted at an arbitrary angle by directly operating the rolling valve with the pendulum member being unable to swing (without swinging the pendulum member), the traveling machine body can be tilted at an arbitrary angle. Good operability when tilting.
Further, in the invention according to claim 2, a mechanism capable of manually tilting the traveling machine body to an arbitrary angle left and right by directly operating the spool of the rolling valve without swinging the pendulum member is easily constructed. can do.

  According to a third aspect of the present invention, the swing allowing means for allowing the swinging of the pendulum member within a predetermined range when the engaging member is not operated by the angle operating lever is provided between the engaging member and the spool operating lever. Easy to build.

It is a whole side view of a transplant machine. It is a top view of a traveling body. It is a side view of a traveling machine body. FIG. 3 is a side view of a portion of the transplant device. It is a front schematic diagram of the mechanism which carries out automatic level control of a run body. It is a schematic side view of a mechanism for automatically leveling a traveling machine body. It is the side schematic diagram of the mechanism which operates the spool of a rolling valve. It is a front schematic diagram of the mechanism which operates the spool of a rolling valve. It is a schematic plan view of a mechanism for operating the spool of the rolling valve. It is side surface sectional drawing of the principal part of the mechanism which operates the spool of a rolling valve. It is front sectional drawing of the principal part of the mechanism which operates the spool of a rolling valve. It is other front sectional drawing of the principal part of the mechanism which operates the spool of a rolling valve. FIG. 4 is a schematic side view of an elevating lever, a lock lever, a lock release lever, an angle operation lever, and the like. FIG. 5 is a schematic plan view of a lift lever, a lock lever, a lock release lever, an angle operation lever, and the like. It is a back schematic diagram, such as a raising / lowering lever, a lock lever, a lock release lever, and an angle operation lever. It is side surface enlarged views, such as a raising / lowering lever, a lock lever, a lock release lever, and an angle operation lever, at the time of unlocking a pendulum member. It is side surface enlarged views, such as a raising / lowering lever, a lock lever, a lock release lever, and an angle operation lever, at the time of locking of a pendulum member. (A) is a schematic side view of the angle operation lever and the like when the pendulum member is unlocked, and (b) is a schematic side view of the angle operation lever and the like when the pendulum member is locked. It is the schematic of the mechanism which locks a pendulum member. It is the schematic of the mechanism which adjusts a traveling body inclination manually. It is a top view of the guide member of a raising / lowering lever.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a walking type transplanter for moving seedlings 2 (soil block seedlings) such as vegetables at predetermined intervals while moving in the longitudinal direction of the basket R.
The transplanter 1 includes a traveling body 3 that travels in the longitudinal direction of the heel R across the heel R, a transplant device 4 provided on the rear side of the traveling body 3, and a support frame that supports the transplant device 4. 5 and a steering handle 7 for steering the traveling body 3.

As shown in FIGS. 1 to 3, the traveling body 3 includes a traveling machine body 9, a propulsion mechanism 10 that supports the traveling machine body 9 so as to travel, an engine 11 mounted on the traveling machine body 9, and the like.
The traveling machine body 9 includes a transmission case 12 and a base 13 attached and fixed to the front part of the transmission case 12 so as to project forward from the transmission case 12. The engine 11 is mounted on the front part of the base 13. Has been.

In this embodiment, the propulsion mechanism 10 includes a pair of left and right front wheels 14 (wheels, front infinite rotator) and a pair of left and right crawler belts 15 (rear infinite rotator) as an infinite rotator that rotates by moving the intercostal groove M. A wheel-crawler combined type infinite rotation propulsion mechanism having
The propulsion mechanism 10 includes a front wheel 14 and a crawler type traveling device 18 disposed on the rear side of the front wheel 14, and the front wheel 14 and the crawler type traveling device 18 are disposed on both the left and right sides of the traveling machine body 9.

The traveling body 3 may be one that supports the traveling body 9 so that it can travel with a pair of left and right front and rear wheels (a rear wheel is used instead of the crawler traveling device 18).
Front wheel support arms 17 that support the front wheels 14 are disposed on the left and right sides of the traveling machine body 9, and the left and right front wheel support arms 17 are disposed in an inclined shape that moves upward as they go rearward. The rear end side (upper end side) is provided with a hexagonal cylindrical fixture 20 having a left and right axial center, and the front wheels 14 are arranged around the left and right axial centers on the front end side (lower end side) of each front wheel support arm 17. It is rotatably supported by.

  A cylindrical shaft support 22 having a left and right axial core is provided on the rear lower surface side of the gantry 13, and the shaft support 22 is attached to and fixed to the traveling machine body 9 (the transmission case 12 and the gantry 13). The left and right inner end sides of a pair of left and right front wheel support shafts 23 having left and right axial cores are inserted into the shaft support 22, and the left and right front wheel support shafts 23 are inserted into the shaft support 22. It is supported so as to be rotatable about a left and right axis.

The left and right outer end sides of the left and right front wheel support shafts 23 are arm attachment portions 24 formed of hexagonal cylinders having left and right axial cores. The front wheels on the same side in the left and right directions are located on the arm attachment portions 24. The front wheel support arm 17 is supported by the shaft support 22 so as to be swingable up and down around the axis of the front wheel support shaft 23 by fitting the fixture 20 of the support arm 17 so as to be integrally rotatable.
The position of the mounting tool 20 in the left-right direction with respect to the arm mounting part 17 can be freely changed. By changing the position of the mounting tool 20 in the left-right direction with respect to the arm mounting part 17, the tread of the front wheel 14 can be adjusted. ing.

  Transmission cases 19 are arranged on both the left and right sides of the mission case 12, and the left and right transmission cases 19 are arranged so as to extend rearward from the side surfaces of the mission case 12. The front end side (one end side) of each transmission case 19 is supported on the side surface of the transmission case 12 via a case support 25 so as to be rotatable around the axial center in the left-right direction. Can be swung. A crawler type traveling device 18 is provided on the rear end side (the other end side) of the transmission case 19.

Each of the left and right front wheel support shafts 23 is provided with a first interlocking bracket 26 that protrudes toward the rear side, and each of the left and right case supports 25 is provided with a second interlocking bracket 27 that protrudes toward the front side. The first and second brackets 26 and 27 on the same side in the left-right direction are interlocked and connected by an interlocking link 28.
The left and right case supports 25 are provided with third interlocking brackets 29 extending upward.

In addition, a shaft support 30 having a left and right axial core is supported in a front and rear direction guide groove formed on both left and right sides of the gantry 13 of the traveling machine body 9 so as to be movable in the front and rear direction. A rolling shaft 31 is supported on the shaft support 30. The rolling shaft 31 is inserted so as to protrude from both the left and right sides, and the shaft 31 is supported by the shaft support 30 so as to be rotatable around a left and right axis.
An upper lever 32 that protrudes upward is provided on the left and right sides of the rolling shaft 31, and a lower lever 33 that protrudes downward is provided on the left and right other sides of the rolling shaft 31. , 33 and the upper and lower levers 32, 33 and the third interlocking bracket 29 on the same side in the left-right direction are interlocked and connected by a connecting link 34.

Further, the gantry 13 is provided with an elevating cylinder 36 and a rolling cylinder 37, and the elevating cylinder 36 and the rolling cylinder 37 are constituted by hydraulic cylinders.
The tube 36 a of the elevating cylinder 36 is fixed to the gantry 13, and the piston rod 36 b protrudes rearward and is connected to the shaft support 30.

Further, the tube 37a of the rolling cylinder 37 is supported by the gantry 13 so as to be rotatable about the left and right axis around the pivot 46 on the front side, and the piston rod 37b protrudes toward the rear side. It is pivotally attached to an arm 39 provided on the left side so as to protrude downward.
When the piston rod 36b of the elevating cylinder 36 is moved back and forth, the shaft support 30 and the rolling shaft 31 move back and forth, the left and right third interlocking brackets 29 are pushed and pulled by the left and right connecting links 34, and both the left and right transmission cases 19 are moved together. While swinging up and down, the left and right second interlocking brackets 27 swing up and down and the left and right first interlocking brackets 26 are pushed and pulled via the left and right interlocking links 28 so that the left and right front wheel support arms 17 are both vertically moved. (The left and right front wheel support arms 17 swing up and down in conjunction with the vertical swing of the left and right transmission cases 19).

As a result, the left and right front wheels 14 and the left and right crawler type traveling devices 18 simultaneously move up and down relative to the traveling machine body 9 and the front wheels 14 and the crawler belt 15 are inevitably grounded. The traveling machine body 9 is configured to move up and down with respect to the ground plane.
Further, when the piston rod 37b of the rolling cylinder 37 is advanced and retracted, the rolling shaft 31 is rotated so that one connection link 34 pushes one third interlocking bracket 29 and the other connection link 34 is the other third link. The interlocking bracket 29 is pulled.

As a result, the left and right front wheels 14 and the crawler type traveling device 18 are raised relative to the traveling machine body 9, and the left and right other front wheels 14 and the crawler type traveling device 18 are lowered relative to the traveling machine body 9. And it is comprised so that the inclination with respect to the left-right direction of the traveling body 9 can be corrected automatically (automatic adjustment).
Therefore, for example, when the traveling machine body 9 is tilted upward to the right, the traveling machine body 9 is horizontally controlled so that the left front wheel 14 and the crawler traveling apparatus 18 are lowered and the right front wheel 14 and the crawler traveling apparatus 18 are raised. .

The support frame 5 is attached and fixed to the rear upper side of the mission case 12 and extends rearward from the mission case 12 and extends upward on the rear end side. A steering handle 7 is connected to the rear end side of the motor 5.
Output shafts for transmitting power from the engine 11 via a power transmission mechanism in the mission case 12 are provided on the left and right side portions of the mission case 12, and the rear end sides (the other end side) of the left and right transmission cases 19 are provided. ) Is supported by a drive shaft 40 for driving the crawler type traveling device 18 so as to be rotatable around a left and right axis, and is driven to the left and right through a power transmission mechanism provided in the transmission case 19 from the output shaft. The drive shaft 40 is driven to rotate by being transmitted to the shaft 40.

  The crawler type traveling device 18 includes an upper drive wheel 41 (sprocket) driven by the drive shaft 40, a front idler 42 disposed on the front side and the lower side of the drive wheel 41, and a rear side of the drive wheel 41. The rear idler 43 disposed on the lower side and the drive wheel 41, the endless belt-like crawler belt 15 wound around the front and rear idlers 42, 43, and the front and rear idlers 42, 43 are attached and A swing frame 44 that can swing back and forth around the axis X of the drive shaft 40 is provided.

When the drive wheel 41 is rotationally driven by the drive shaft 40, the crawler belt 15 engaged with the drive wheel 41 is circulated (rotated) in the circumferential direction (longitudinal direction), and the crawler traveling device 18 moves forward or forward. It is configured to reverse.
The transplanting device 4 includes a seedling placing table 46 on which the seedling tray is placed and supported, a seedling removing device 47 that takes out the seedling 2 from the seedling tray on the seedling placing table 46, and a seedling supplied from the seedling removing device 47. Rolling the upper surface of the ridge R on the front side of the planted body 48, a planting body 48 for planting 2 on the ridge R, a pressure ring 49 (covering ring) for suppressing the left and right sides of the seedling 2 planted on the ridge R And a leveling roller 50 (detection roller).

The seedling tray is made of plastic and is thin, flexible, and has a large number of pot parts arranged in a grid pattern at a predetermined pitch in the vertical and horizontal directions. The opening edge of each pot part is a flat plate. Are connected to each other by thin wall portions.
In this seedling tray, seedlings 2 (soil block seedlings) grown by seeding on the floor soil supplied to each pot portion are grown.

The seedling mount 46 is located on the front side of the steering handle 7, and is provided in an inclined shape that moves downward as it goes forward, and the bottom of the seedling tray is placed thereon to support the seedling tray. It has a mounting plate and is supported by the support frame 5 so as to be movable in the left-right direction.
The seedling table 46 can be intermittently reciprocated in the horizontal direction by one pitch in the horizontal direction of the pot portion of the seedling tray by the horizontal feeding mechanism. A vertical feed mechanism that vertically feeds the seedling tray by one pitch in the vertical direction of the pot portion is provided at the left and right ends of the moving area.

  The seedling extraction device 47 includes a seedling extraction claw 51 that extracts the seedling 2 from the pot portion, and includes an exercise mechanism that is driven by power from the planting power transmission mechanism in the mission case 12 to operate the seedling extraction claw 51. The seedling extraction claw 51 is advanced from the front side with respect to the floor soil in the section, and the floor soil is stabbed and pierced, and then the seedling extraction claw 51 is retracted so that the seedling 2 can be taken out from the pot portion.

In addition, the seedling 2 taken out from the pot portion is transported above the planting body 48 located at the seedling receiving position and can be released to the planting body 48.
The planted body 48 has an open upper end so that the seedling 2 can be supplied from the upper side, and a lower portion can be opened and closed so that the seedling 2 can be held inside and the seedling 2 can be released downward.
As shown in FIG. 4, the planting body 48 is supported by an elevating mechanism 53 supported by the planting frame 52 so that the planting body 48 can freely move up and down. It is supported so that it can rotate freely and can swing up and down.

  The transmission case 12 is provided with a power take-off shaft 54 concentrically with the pivot shaft at the front end of the planting frame 52, and power is transmitted from the planting power transmission mechanism to the power take-out shaft 54. Power is transmitted from the power take-out shaft 54 to the elevating mechanism 53 via a chain winding transmission mechanism in a transmission case 55 provided in the planting frame 52, and the elevating mechanism 53 is driven.

The planting body 48 is supplied with the seedling 2 from the seedling picking device 47 in a closed state at the top dead center at or near the top dead center of the vertical movement range, descends while holding the seedling 2 inside, and moves up and down. By entering and opening the heel R on the bottom dead center side, a planting hole is formed in the heel R and the seedling 2 is discharged into the planting hole. Thereby, the seedling 2 is planted in the cocoon R.
A pair of left and right pressure wheels 49 are provided on the rear side of the planting body 48, roll on the left and right sides of the planting position of the seedling 2 on the upper surface of the heel R, and are put into the planting hole formed by the planting body 48. Press the soil on the left and right sides of the seedling 2.

Further, the pressure-reducing wheel 49 is supported on the rear side of the planting frame 52 via a support mechanism 56, and the rear side of the planting frame 52 is supported by the pressure-reducing wheel 49. The planting depth can be changed by changing the distance in the vertical direction from the frame 52.
The leveling roller 50 rolls the upper surface of the ridge R on the front side of the planting body 48 to level the upper surface of the ridge R and detects the height of the ridge R.

On the lower end side of the front part of the transmission case 12, a swing arm 58 is provided whose front part is pivotally supported around a shaft center in the left-right direction via a support shaft 57 and is swingable up and down. A leveling roller 50 is supported on the rear side of the swing arm 17 so as to be rotatable about a left and right axis, and rolls on the upper surface of the heel R following the upper surface of the heel R.
The vertical movement of the leveling roller 50 with respect to the transmission case 12 is transmitted to the lift valve 61 provided on the upper surface side of the transmission case 12 by the first and second sensor arms 59 and 60 that swing together with the swing arm 58. By controlling the elevating cylinder 36 by the elevating valve 61, the traveling machine body 9 is controlled to move up and down so that the distance from the upper surface of the eaves R is kept constant, whereby the planting frame 52 is adjusted to the eaves R height. It is configured such that the seedling 2 is planted at a planting depth set by following up and down.

  On the other hand, the vertical movement of the pressure reducing wheel 49 relative to the mission case 12 is transmitted from the planting frame 52 to the lift valve 61 via the interlocking mechanism 62, and the distance from the upper surface of the heel R is also constant by the movement of the pressure reducing wheel 49. Although it is configured so that the traveling machine body 9 can be controlled to be lifted and maintained, the movement of the pressure reducing wheel 49 is not transmitted to the lifting valve 61 when the leveling roller 50 detects the height of the heel R. It has become.

  In the transplanter 1 having the above-described configuration, when the seedling 2 is planted to the end of the ridge R, the seedling 2 is planted on the adjacent ridge R by turning around the headland in the field and making the traveling direction reverse. . When turning on a headland in an agricultural field, the traveling machine body 9 is raised, the steering handle 7 is pushed down to lift the front wheel 14 off the ground, the crawler type traveling device 18 on the side to turn is turned off, and the brake is applied. It turns by running.

As shown in FIGS. 1 and 5 to 12, the rolling cylinder 36 is controlled by a rolling valve 63 disposed on the upper side of the mission case 12.
Further, a pendulum member 66 that detects the inclination of the traveling machine body 9 when the traveling machine body 9 tilts to the left and right is disposed on the front side of the transmission case 12, and the movement of the pendulum member 66 is a swing transmission mechanism 67. It is comprised so that it may transmit to the rolling valve 63 via.

The rolling valve 63 includes a four-port three-position switching valve and the like, and is provided with a spool 68 that is attached and fixed to the transmission case 12 (the traveling machine body 9 side) and protrudes forward.
The pendulum member 66 is disposed at the center in the left-right direction of the traveling machine body 9, and includes a pendulum plate 69, a weight 70 attached and fixed to the lower portion of the pendulum plate 69, and a cylinder portion 71 fixed to the upper portion of the pendulum plate 69. The pendulum member 66 is supported on the traveling machine body 9 side via a pendulum support bracket 72.

The pendulum support bracket 72 includes a left and right side wall 72a whose lower part is attached and fixed to the gantry 13, an upper wall 72b that connects the upper ends of the left and right side walls 72a, and a support that is fixed to the upper rear end side between the left and right side walls 72a. The support plate 73 is provided with a support shaft 74 having a front and rear axial center so as to protrude forward.
The pendulum member 66 is disposed between the left and right side walls 72 a of the pendulum support bracket 72, and the cylinder portion 71 is arranged around the axis of the support shaft 74 at the top of the pendulum support bracket 72 through a bearing provided in the cylinder portion 71. It is supported rotatably.

Therefore, the pendulum member 66 is swingable to the left and right around the axis of the support shaft 74 with respect to the traveling machine body 9. When the traveling machine body 9 is tilted to either the left or right, the pendulum member 66 swings and travels. The left / right inclination of the body 9 is detected.
A lever support bracket 76 is attached and fixed to the front side of the rolling valve 63, and a spool operating lever 77 for operating the spool 68 of the rolling valve 63 by swinging is supported on the lever support bracket 76.

The lever support bracket 76 includes a mounting wall 76a that is fixedly mounted on the front surface side of the rolling valve 63, and left and right support walls 76b that extend forward from the left and right ends of the mounting wall 76a.
The lever support bracket 76 is located on the right side of the spool 68 of the rolling valve 63, the right support wall 76b is formed from the upper end to the lower end of the mounting wall 76a, and the left support wall 76b is formed at the lower part of the mounting wall 76a. , Located below the spool 68.

Between the left and right support walls 76b of the lever support bracket 76, a pair of left and right rotating cylinders 78 and 79 (rotating members) having left and right axial cores are disposed. The left and right support walls 76b of the support bracket 76 and the left and right rotation cylinders 78 and 79 are supported by a pivot shaft 80 penetrating the left and right axial centers.
The pivot shaft 80 is fixed to the lower portion of a mounting plate 81 disposed on the right side surface of the right support wall 76b of the lever support bracket 76, and the upper portion of the mounting plate 81 is bolted and nuted to the right support wall 76b. It is fixed by mounting.

The spool operating lever 77 is composed of the left rotating cylinder 78 and a lever main body 82 fixed to the rotating cylinder 78, and swings around the axis of the pivot shaft 80 with respect to the lever support bracket 76. It is supported freely.
The lever main body 82 extends upward from the left rotating cylinder 78 and is positioned on the right side of the spool 68, and the lower part of the first arm 83 and the left rotating cylinder 78 obliquely upward in the front direction. The extending second arm 84, the engaging wall 85 located on the left side of the spool 68, and the connecting wall 86 that connects the engaging wall 85 and the upper ends of the first arm 83 are formed integrally with a plate material. Has been.

A connecting pin 87 is penetrated in the left-right direction across the first arm 83, the spool 68, and the engaging wall 85. When the spool operating lever 77 swings around the axis of the pivot shaft 80, the spool 68 is pushed back and forth. It is configured to be pulled.
An insertion hole 88 for inserting the connecting pin 87 formed in the first arm 83 and the engagement wall 85 is formed as a long hole that is long in the vertical direction.

Further, an engaging pin 89 (contacted portion) having a left and right axial core is provided on the extending end side of the second arm 84 so as to protrude leftward.
The swinging transmission mechanism 67 transmits the swinging motion of the pendulum member 66 to the spool operating lever 77, and includes a first swinging member 91 that swings integrally with the pendulum member 66, and the right rotating cylinder 79. A second swinging member 92 that pivots integrally with the pivot shaft 80, an interlocking rod 93 that transmits the swinging motion of the first swinging member 91 to the second swinging member 92, and a spool operation. A third swinging member 94 that swings integrally with the lever 77 and a transmission means 95 that transmits the swinging motion of the second swinging member 92 to the third swinging member 94 are provided.

The first swinging member 9157 is formed of a plate material that is long in the left-right direction, and the right end side is fixed to the cylindrical portion 71 of the pendulum member 66 and protrudes leftward from the cylindrical portion 71.
The interlocking rod 93 is arranged in the vertical direction, and is provided with ball joints 96 on the upper and lower sides and is adjustable in length. The ball joint 96 on the lower end side of the interlocking rod 93 is connected to the protruding end side (left end side) of the first swing member 91.

The second swinging member 92 is formed of a plate material, and swinging arm part 97 projecting forward from right turn cylinder 79, and extending upwardly from the front and rear halfway part of swinging arm part 97. The wall 98 and a shaft support wall 99 extending leftward from the upper end of the extension wall 98 are provided.
A ball joint 96 on the upper end side of the interlocking rod 93 is connected to the protruding end side of the swing arm portion 97.

The third swing member 94 has a U-shape in a side view from an upper wall 94a, a lower wall 94b positioned below the upper wall 94a, and a back wall 94c connecting the rear ends of the upper and lower walls 94a and 94b. Is formed.
The third swing member 94 is disposed below the shaft support wall 99 and on the right side of the first arm 83 of the spool operation lever 77, and is fixed to the first arm 83 or the left rotation cylinder 78 (therefore, accordingly). The third swinging member 94 can swing up and down around the pivot shaft 80).

The transmission means 95 has an upper end fixed to the shaft support wall 99 of the second swinging member 92 and a support pin 100 penetrating the upper and lower walls of the third swinging member 94 and is fitted on the upper and lower sides of the support pin 100. A spring receiving member 101 and a spring member 102 provided between the upper and lower spring receiving members 101.
A male screw 100a is formed on the lower end side of the support pin 100, and a pair of nuts 103 are screwed into the male screw portion 100a.

  The spring receiving member 101 includes a cylindrical portion 101a that is externally fitted to the support pin 100 so as to be movable in the axial direction, and a spring receiving portion 101b that extends radially outward from the end of the cylindrical portion 101a. The upper spring receiving member 101 is positioned below the shaft support wall 99 of the second swing member 92, the lower spring receiving member 101 is positioned above the nut, and the upper and lower spring receiving members 101 are spring receivers. The parts 101b are provided so as to face each other.

The spring member 102 is formed of a coil spring, is fitted onto the support pin 100 between the upper and lower spring receiving portions 101b, and is interposed between the upper and lower spring receiving portions 101b in a compressed manner.
The insertion hole 104 for inserting the support pin 100 formed in the upper and lower walls 94a and 94b of the third swing member 94 can be inserted into the cylindrical portion 101a of the spring receiving member 101, and the spring receiving portion 101b is inserted therethrough. It is impossible and is formed in the shape of a long hole in the front and rear.

When the traveling machine body 9 is in a horizontal state, the spool 68 of the rolling valve 63 is located at the neutral position.
When the traveling machine body 2 tilts to the left or right, the pendulum member 66 swings in the tilted direction, and when the pendulum member 66 swings to the left or right, the first swing member as shown by arrows in FIGS. 91 swings up and down, and the swing arm 97 of the second swing member 92 swings up and down via the interlocking rod 93.

When the swing arm portion 97 of the second swing member 92 swings up and down, the third swing member 94 swings up and down around the pivot shaft 80 via the transmission means 95, and the spool operating lever 77 It swings integrally with the third swing member 94. Thereby, the spool 68 of the rolling valve 63 is pushed and pulled in the front-rear direction, and the rolling cylinder 36 is controlled so as to return the traveling machine body 9 to the horizontal.
An engagement hole 105 is formed through the pendulum plate 69 in the front-rear direction. The lower part of the engagement hole 105 is a long groove 105a having a constant width in the left-right direction, and the upper part is formed so as to gradually spread outward in the left-right direction as it goes upward.

A rotating shaft 106 arranged in the left-right direction is provided in front of the lower portion of the engagement hole 105. The rotation shaft 106 is supported on the left and right side walls 72a of the pendulum support bracket 72 so as to be rotatable around the axis in the left-right direction.
Further, the pivot shaft 106 is inserted into the long groove 105a of the engagement hole 105 so as to be detachable by pivoting the pivot shaft 106, and the swinging of the pendulum member 66 around the support shaft 74 is restricted. A lock pin 107 (lock member) (which locks the pendulum member 66 so that it cannot swing left and right) is fixed.

Therefore, when the pendulum member 66 is locked so as not to swing left and right by the lock pin 107, the 9 automatic horizontal control of the traveling machine body cannot be performed.
The lock pin 107 is used for restricting the swinging of the pendulum member 66 when the vehicle travels on the road or manually adjusts the inclination of the traveling machine body 9 to an arbitrary angle.
A crank handle portion 108 is formed on a portion of the rotating shaft 106 protruding from the right side wall 72a of the pendulum support bracket 72, and the lock pin 107 is erected on the outer surface of the right side wall of the pendulum support bracket 72 ( A receiving member 109 that restricts the downward swing of the crank handle portion 108 in a state where the crank handle portion 108 is detached from the engagement hole 105 is provided.

Further, the crank handle portion 108 is biased by a spring in a direction in contact with the receiving member 109.
As shown in FIGS. 13 to 18, on the right side portion of the steering handle 7, a lift lever 116 that lifts and lowers the traveling body 9, a lock lever 117 that operates the lock pin 107, and a lock of the lock lever 117. Are provided with an unlock lever 118 and an angle operation lever 119 for manually adjusting the inclination of the traveling machine body 9 to an arbitrary angle.

Further, on the right side portion of the steering handle 7, a rotation support shaft 121 having a left and right axial core is supported by a lever bracket 120 fixed to the steering handle 7 so as to be rotatable around the axial center. .
A pair of left and right cylindrical boss portions 122 and 123 are externally fitted concentrically on the left side of the rotation support shaft 121. The left boss portion 122 is supported by the rotation support shaft 121 so as to be relatively rotatable, and the right boss portion 123 is fixed to the rotation support shaft 121 via a pin and rotates integrally with the rotation support shaft 121.

A support cylinder 124 having a horizontal axis is disposed below the rotation support shaft 121, and the support cylinder 124 is fixed to a stay 125 fixed to the lever bracket 120.
The elevating lever 116 is supported at its lower end side by a mounting bracket 126 that is fixedly attached to the right side of the rotating support shaft 121 so that it can swing left and right, and can be swung back and forth around the axis of the rotating support shaft 121. In addition, it can be swung freely to the left and right.

Further, the elevating lever 116 is inserted through a guide groove 128 of a guide member 127 provided on the steering handle 7, and the elevating lever 116 is placed in the guide groove 128 shown in FIG. D, a fixed position F, a first raised position U1, and a second raised position U2 are configured to be movable.
The elevating lever 116 is interlocked and connected to the elevating valve 61 side via a cable, a connecting rod or the like, and when the elevating lever 116 is operated to the fixed position F, the spool of the elevating valve 61 is switched to the neutral position.

  Further, when the elevating lever 116 is operated to the ascending side, that is, the first ascending position U1 or the second ascending position U2, the spool of the elevating valve 61 is switched to the ascending position. Further, when the elevating lever 116 is operated to the lower side, that is, the planting position P or the lowering position D, the spool of the elevating valve 61 is in a state where it can freely move in the descending, neutral, and ascending directions. For this reason, the movement of the leveling roller 50 and the pressure reducing wheel 49 is transmitted to the lift valve 61, and the spool of the lift valve 61 is switched to the raised position, the neutral position, and the lowered position in accordance with these movements.

  Therefore, when the elevating lever 116 is operated to the fixed position F, the elevating cylinder 36 does not expand and contract, and the traveling machine body 9 is fixed so that it cannot be raised and lowered. When the elevating lever 116 is operated to the first ascending position U1 or the second ascending position U2, the elevating cylinder 36 is extended by the control of the elevating valve 61, and the traveling machine body 9 is raised. When the elevating lever 116 is operated to the planting position P or the lowered position D, the spool of the elevating valve 61 is first switched to the lowered position, and the elevating cylinder 36 is contracted by the control of the elevating valve 61, and the traveling machine body 9 is lowered. Thus, the leveling roller 50 and the pressure reducing wheel 49 are grounded, and then the spool of the lift valve 61 is switched to the neutral position.

Further, when the elevating lever 116 is operated to the planting position P, the planting clutch is connected, and in conjunction with the traveling of the traveling machine body 9, the planting body 48 moves up and down to plant seedlings in the field. When the elevating lever 116 is disengaged from the planting position P, the planting clutch is disengaged, and the planting body 48 is stopped and does not perform the planting operation.
The lock lever 117 is fixed to the boss 122 on the left side, is supported so as to be swingable about the axis of the rotation support shaft 121, and is rotated about the axis of the rotation support shaft 121, whereby FIG. Can be swung between a lock position shown in FIG. 16 and a lock release position shown in FIG.

The lock lever 117 is formed of a plate material, and is arranged with the plate thickness direction aligned with the left-right direction and fixed to the left boss portion 122, and a mounting extending from the lever body 129 to the left. Wall 130.
The mounting wall 130 is provided so that the plate thickness direction is orthogonal to the axis Y of the rotation support shaft 121.
As shown in FIG. 19, the lever main body 129 of the lock lever 117 is connected to the crank handle portion 108 of the rotating shaft 106 via the interlocking member 131 and the operation cable 132.

The rear end side of the interlocking member 131 is pivotally connected to the lever main body 129 of the lock lever 117, and one end side (rear end side) of the lock lever biasing member 133 made of a tension coil spring is hooked on the front end side of the interlocking member 131. The other end side (front end side) of the lock lever urging member 133 is hooked on an outer receiver 134 provided on the rear end side of the support frame 5.
When the interlocking member 131 is pulled forward by the lock lever urging member 133, the lock lever 117 is set to the unlock position.

The operation cable 132 is configured by a Bowden cable, and one end side of the inner cable 132 a of the operation cable 132 is connected to the front end side of the interlocking member 131.
The other end side of the inner cable 132 a of the operation cable 132 is connected to the crank handle portion 108 of the rotating shaft 106.
One end side of the outer cable 132 b of the operation cable 132 is attached and fixed to the outer receiver 134 on the rear end side of the support frame 5, and the other end side of the outer cable 132 b is attached and fixed to the outer receiver 135 fixed to the pendulum support bracket 72. ing.

  Therefore, when the lock lever 117 is swung from the unlock position shown in FIG. 16 to the lock position shown in FIG. 17, the interlocking member 131 moves backward as shown by the arrow in FIG. When the cable 132a is pulled and the crank handle portion 108 of the rotating shaft 106 is pulled by the operating cable 132, the lock pin 107 is rotated rearward and inserted into the engagement hole 105 of the pendulum plate 69, and the pendulum member 66 is locked so that it cannot swing left and right.

On the other hand, when the lock lever 117 is swung from the lock position to the lock release position, the interlocking member 131 moves forward, the operation force of the operation cable 132 is released, and the lock pin 107 rotates forward to rotate the pendulum plate. The pendulum member 66 is allowed to swing left and right by disengaging from the engagement hole 105 of 69.
Further, the lock lever 117 is provided with an engaging portion 136 constituted by a pin that engages with the lock releasing lever 118.

The lock release lever 118 is supported by the support cylinder 124 via a pivot shaft 137 so as to be swingable around a horizontal axis.
The lock release lever 118 includes an operation lever portion 138 extending rearward from the pivot shaft 137 and an engagement lever portion 139 extending obliquely upward and forward from the pivot shaft.
Further, the lock release lever 118 is urged counterclockwise in FIG. 16 by release lever urging means 140 comprising a torsion coil spring fitted into the support cylinder 124.

The lock release lever 118 can be swung clockwise from the position shown in FIGS. 16 and 17 against the urging force of the release lever urging means 140. When the operation force is released, the release lever urging means 140 is released. It is configured to return to the original position by the urging force.
Further, the engagement lever portion 139 of the lock release lever 118 locks the lock lever 117 and the first engagement portion 141 that engages the engagement portion 136 of the lock lever 117 to hold the lock lever 117 in the locked position. A second locking portion 142 that locks the engaging portion 136 of the lock lever 117 is provided to be held in the release position.

  When the lock lever 117 is swung from the unlock position to the lock position, the lock lever 117 is pressed while the engagement portion 136 presses the engagement lever portion 139 of the lock release lever 118 as shown by an arrow in FIG. 17 and the lock lever 117 is positioned at the lock position, as shown in FIG. 17, the lock release lever 118 is restored and the engaging portion 136 is locked by the first locking portion 141 so that the lock lever 118 is Held in the locked position.

  Then, in a state where the lock lever 117 is located at the lock position and the engaging portion 136 is locked to the first locking portion 141, the operation lever portion 138 of the lock releasing lever 118 is pushed down (indicated by an arrow in FIG. 17). The engagement portion 136 of the lock lever 117 is disengaged from the first locking portion 141, and the lock lever urging means 153 urges the lock lever 117 to the lock release position. Thus, the engaging portion 136 of the lock lever 117 is configured to engage with the second locking portion 142 of the lock releasing lever 118.

The right boss 123 is provided with an interlocking piece 143 protruding outward in the radial direction, and one end side of a connecting member 144 is pivotally connected to the protruding end side of the interlocking piece 143.
On the other end side of the connecting member 144, an arc-shaped long hole 145 centering on the axis of the rotation support shaft 121 is formed, and an engagement pin 146 provided on the lock release lever 118 is formed in the long hole 145. Has been inserted.

Therefore, when the raising / lowering lever 116 is swung to the raised position side (the first raised position U1 or the second raised position U2, the direction indicated by the arrow in FIG. 17), the connecting member 144 is interposed via the engaging pin 146. The lock release lever 118 is swung in a release direction (a direction in which the operation lever portion 138 of the lock release lever 118 is pushed down).
That is, when the lifting lever 116 is swung to the lifted position while the lock lever 117 is in the locked position, the traveling machine body 9 is lifted and the lock lever 117 is automatically unlocked in conjunction with this. It is configured to swing to a position and unlock the pendulum member.

The unlocking lever 118, the interlocking piece 143, the connecting member 144 and the like constitute an automatic unlocking mechanism.
The angle operation lever 119 is for manually adjusting the left and right inclination of the traveling machine body 9 to an arbitrary angle by remotely operating the spool operation lever 77.
The angle operation lever 119 is attached to the mounting wall 130 of the lock lever 117, and the lock lever 117 can be swung by the angle operation lever 119.

The mounting wall 130 is provided with a holding cylinder 147 having an axis in the plate thickness direction (an axis perpendicular to the axis of the rotation support shaft 121). The holding cylinder 147 is provided at the base of the angle operation lever 119. The fixed lever mounting member 148 is supported so as to be rotatable around the axis.
The lever mounting member 148 has a square block-shaped block portion 148a and a shaft portion 148b protruding from the block portion 148a, and the shaft portion 148b is inserted into the holding cylinder 147 so as to be rotatable around the axis. . A screw portion 149 is provided on the tip end side of the shaft portion 148b, and the nut portion 150 is screwed into the screw portion 149 to prevent the shaft portion 148b from coming off.

In a state where the lock lever 117 is located at the unlocking position shown in FIGS. 16 and 18A, the axis of the holding cylinder 147 is directed obliquely upward in the front, and the block portion 148a is connected to the lock lever 117. The base portion of the angle operation lever 119 is fixed to the front side of the block portion 148a.
In this state, the angle operation lever 119 passes from the base portion of the block portion 148a through the lower side of the block portion 148a, crosses the mounting wall 130, extends to the rear side of the mounting wall 130, and then extends obliquely upward. A grip portion 151 is provided on the distal end side so as to extend obliquely upward rearward.

When the angle control lever 119 is pushed down in the direction indicated by the arrow in FIG. 16 with the lock lever 117 positioned at the unlock position, the lock lever 117 is swung to the lock position.
The angle operation lever 119 is swingable left and right around the shaft center of the shaft portion 148b of the lever mounting member 148.

Further, a boss portion 153 of a spring hook member 152 is fitted on the holding cylinder 147 so as to be concentric, and the spring hook member 152 is rotatably supported around the axis of the holding cylinder 147.
One end side (right end side) of the first biasing member 154 made of a tension coil spring is hooked on the spring hooking member 152, and the other end side (left end side) of the first biasing member 154 is the mounting wall of the lock lever 117. It is hooked on a spring hook 155 provided on the left end side of 130.

The spring hook member 152 is in contact with the angle operation lever 119 from the right side in a state where the angle operation lever 119 is located at the neutral position, and in this state, the angle operation lever 119 is first biased. A contact portion 156 that contacts the mounting wall 130 is provided on the angle operation lever 119 so as not to rotate in the pulling direction of the member 154.
In the block portion 148 a of the lever mounting member 148, a rotation shaft 157 is penetrated concentrically with the axis of the rotation support shaft 121 and is supported so as to be rotatable around the axis. A cable connecting portion 158 is provided on the left side of the rotation shaft 157.

One end side of the inner cable 159a of the operation cable 159 composed of a Bowden cable is pivotally connected to the cable connecting portion 158 so as to be rotatable around an axis in a direction perpendicular to the axis of the rotating shaft 157. Yes.
One end side of the outer cable 159 b of the operation cable 159 is attached to an outer receiving member 160 provided on the steering handle 7, and the other end side of the outer cable 159 b is fixed to the rolling valve 63 with the lever support bracket 76. It is attached to the outer receiving member 161 that is fixedly attached to the outer member.

  The other end of the inner cable 159a of the operation cable 159 is pivotally connected to one end in the longitudinal direction of the engagement member 162 made of a rectangular plate, and the other end in the longitudinal direction of the engagement member 162 is pulled. One end side of the second urging member 163 made of a coil spring is hooked, and the other end side of the second urging member 163 is hooked on a spring receiving member 164 fixed to the upper surface of the upper wall 72b of the pendulum support bracket 72.

A circular engagement hole 165 is formed in the engagement member 162. The engagement hole 165 is formed between a portion where the inner cable 159a of the operation cable 159 is pivotally connected and a portion where the second urging member 163 is hooked (a central portion in the longitudinal direction of the engagement member 162). ing.
The engagement member 162 is located on the left side of the distal end side of the second arm 84 of the spool operation lever 77, and the engagement of the distal end side of the second arm 84 of the spool operation lever 77 in the engagement hole 165. A pin 89 is inserted.

  The pendulum member 66 is moved to the traveling machine body 9 by the lock pin 107 by the angle operation lever 119, the spring hook member 152, the first biasing member 154, the operation cable 159, the engagement member 162, the second biasing member 163, and the like. A manual angle adjustment mechanism capable of operating the rolling valve 63 is configured so that the traveling machine body 9 can be tilted to an arbitrary angle left and right by manual operation of the angle operation lever 119 in a state in which the swing is impossible. .

  In this manual angle adjustment mechanism, the urging force of the second urging member 163 is set to be weaker than the urging force of the first urging member 154, and thereby the position of the angle operation lever 119 is not operated ( In the neutral position), the spring 68 is held in contact with the spring receiving member 152 as shown in FIG. 14. In this state, the spool 68 of the rolling valve 63 is positioned in the neutral position and the engagement pin 89 is engaged with the engagement hole. It is located at the center of 165.

In addition, the engagement hole 165 is configured so that the spool operation lever 77 can be moved even when the spool operation lever 77 swings within a predetermined range in a state where the engagement member 162 is not operated (a state where the angle operation lever 119 is located at the neutral position). The engagement pin 89 is formed in such a size that it can move in the engagement hole 165 to allow the swing.
That is, the spool operating lever 77 can be swung in conjunction with the swinging of the pendulum member 66 in a state where the swinging of the pendulum member 66 is free (automatic horizontal control of the traveling machine body 9 is performed). Is possible).

Due to the relationship between the engagement hole 165 of the engagement member 162 and the engagement pin 89, a swing permission means for allowing the swinging of the pendulum member 66 within a predetermined range when the engagement member 162 is not operated by the angle operation lever 119. Is configured.
The engagement pin 89 may be provided on the engagement member 162 side and the engagement hole 165 may be provided on the second arm 84 side of the spool operation lever 77.

  In the case where the left and right inclination of the traveling machine body 9 is manually adjusted to an arbitrary angle by the manual angle adjustment mechanism, first, the angle operation lever 119 is in the neutral position and the lock lever 117 is locked. The angle control lever 119 is pushed down from the release position, and the lock pin 107 is inserted into the engagement hole 105 of the pendulum member 66 to lock the pendulum member 66 so that automatic horizontal control of the traveling machine body 9 is not affected. .

  In this state, when the angle operation lever 119 is swung from the neutral position to the left (in the direction of arrow a in FIG. 20), the connecting portion 158 of the rotating shaft 157 is swung forward, and the inner cable of the operation cable 159 is moved. One end side of 159a moves forward (in the direction of arrow b in FIG. 20), the engagement member 162 is pulled by the urging force of the second urging member 163, and the engagement member 162 is in the direction of arrow c in FIG. Move to.

Then, the upper edge portion 166 (contact portion) of the engagement hole 165 contacts the engagement pin 89 and pushes the engagement pin 89, so that the second arm 84 of the spool operation lever 77 is moved downward. The first arm 83 swings forward and the spool 68 of the rolling valve 63 is pulled forward.
At this time, since the pendulum member 66 is locked, the first swing member 91, the interlocking rod 93, and the second swing member 92 of the swing transmission mechanism 67 do not move, but the third swing member 94 does not move. When the spring member 102 is elastically deformed, the spring member 102 swings downward together with the second arm 84 of the spool operation lever 77 to allow the spool operation lever 77 to swing.

  That is, when the third swing member 94 swings downward together with the second arm 84 of the spool operation lever 77, the upper spring receiving member 101 is pushed down by the upper wall 94 a of the third swing member 94, and the spring member 102. Press. At this time, since the lower spring receiving member 101 is in contact with the nut 103 and does not move, the spring member 102 is elastically deformed. Thereby, the downward swing of the third swing member 94 is allowed.

When the angle operation lever 119 is swung to the left and the spool 68 of the rolling valve 63 is pulled forward, the traveling machine body 9 is tilted so that the left side is lowered.
At this time, since the angle operating lever 119 pushes the spring hooking member 152 against the urging force of the first urging member 154, the operating force of the angle operating lever 119 is released (for example, the angle operating lever When the hand 119 is released, the angle operating lever 119 is returned to the neutral position by the urging force of the first urging member 154 and the engaging member 162 is returned to the original position, so that the spool 68 of the rolling valve 63 is neutral. Returning to the position, the traveling machine body 9 is held at an arbitrary angle inclined.

  Further, when the angle control lever 119 is swung from the neutral position to the right side (in the direction indicated by the arrow d in FIG. 20) with the lock lever 117 being operated to the lock position, the connecting portion 158 of the rotating shaft 157 is moved rearward. The one end side of the inner cable 159a of the operation cable 159 moves rearward (in the direction indicated by the arrow e in FIG. 20), and the engaging member 162 is pulled by the inner cable 159a. It moves in the direction of arrow f.

Then, the lower edge portion 167 (contact portion) of the engagement hole 165 contacts the engagement pin 89 and pushes the engagement pin 89, so that the second arm 84 of the spool operating lever 77 is moved. The first arm 83 swings rearward while swinging upward, and the spool 68 of the rolling valve 63 is pushed rearward.
At this time, since the pendulum member 66 is locked, the first swing member 91, the interlocking rod 93, and the second swing member 92 of the swing transmission mechanism 67 do not move, but the third swing member 94 does not move. When the spring member 102 is elastically deformed, the spring member 102 swings upward together with the second arm 84 of the spool operation lever 77 to allow the spool operation lever 77 to swing.

  That is, when the third swing member 94 swings upward together with the second arm 84 of the spool operation lever 77, the upper spring receiving member 101 is pushed up by the lower wall 94 b of the third swing member 94, and the spring member 102. Press. At this time, since the upper spring receiving member 101 is in contact with the shaft support wall 99 of the third swinging member 92 and does not move, the spring member 102 is elastically deformed. Thereby, the upward swing of the third swing member 94 is allowed.

When the angle operation lever 119 is swung rightward and the spool 68 of the rolling valve 63 is pushed backward, the traveling machine body 9 is tilted so that the right side thereof is lowered.
When the operation force of the angle operation lever 119 is released from this state, the engagement member 162 is returned to the original position by the urging force of the second urging member 163 and the angle operation lever 119 is returned to the neutral position. The spool 68 of the valve 63 is returned to the neutral position, and the traveling machine body 9 is held at an arbitrary angle inclined.

  When making ridges R in the direction crossing the inclination direction on the slope, the ridges R are formed so that the center of the ridge width direction of the upper surface of the ridge R is shifted from the center of the skirt width direction of the ridge portion to the mountain side. The For this reason, the seedling 2 is placed on the heel R with the transplanter 1 straddling the heel R (so that the heel R is positioned between the left and right front and rear wheels of the transplanter 1) and the automatic horizontal control of the traveling machine body 9 is applied. When planting, since the planting body 48 of the transplanting machine 1 is provided at the center in the left-right direction of the traveling machine body 9 (center between the left-right propelling mechanisms 10), the seedling 2 The problem arises that can not be planted.

In such a case, as described above, the automatic horizontal control of the traveling machine body 9 is not performed, and the traveling machine body 9 is manually tilted to the left and right at an arbitrary angle, thereby substantially reducing the width of the kite R on the slope. The planted body 48 can be positioned at the center so that the seedling 2 can be planted at the approximate center of the upper surface of the ridge R.
In addition, after planting the seedling 2 to the end of the ridge R and then planting the seedling 2 on the adjacent ridge R, the transplanter 1 is swung on a headland or the like. Since the mechanism 10 and the propulsion mechanism 10 on the valley side are reversed, the pendulum member 66 must be unlocked by the lock pin 107 so that the traveling machine body 9 is automatically level-controlled.

  Further, in the walking type transplanter 1, when turning, the traveling machine body 9 is raised and the steering handle 7 is pushed down to float the front wheel 14 and turn in this state. Further, in the transplanter 1, when the traveling machine body 9 is raised, the lock of the pendulum member 66 by the lock pin 107 is automatically released by the automatic lock release mechanism, so that the troublesome pendulum member 66 is turned during turning. No unlocking is required, and the turning operation can be performed smoothly.

DESCRIPTION OF SYMBOLS 3 Traveling body 9 Traveling machine body 10 Propulsion mechanism 37 Rolling cylinder 63 Rolling valve 66 Pendulum member 67 Oscillation transmission mechanism 68 Spool 77 Spool operation lever 89 Contacted part 102 Spring member 107 Lock member 117 Lock lever 119 Angle operation lever 162 Engagement Member 166 Contact part 167 Contact part

Claims (3)

The traveling body (9) includes a traveling body (3) that is supported by the propulsion mechanisms (10) provided on the left and right sides of the traveling body (9) so that the traveling body (9) can travel. By simultaneously moving the mechanism (10) up and down, the traveling machine body (9) can be raised and lowered, and the pendulum member (66) provided on the traveling machine body (9) so as to be able to swing left and right is used to move the traveling machine body (9) in the vertical direction. The left and right tilts are detected and the left and right propulsion mechanisms (10) are moved up and down in opposite directions to automatically adjust the traveling machine body (9) to be substantially horizontal,
A rolling cylinder (37) for moving the left and right propulsion mechanisms (10) up and down in opposite directions and a rolling valve (63) for controlling the rolling cylinder (37) are provided,
A locking member (107) for locking the pendulum member (66) so as not to be swingable by being detachably engaged with the pendulum member (66);
A lock lever (117) is provided that is supported so as to be swingable and that engages and disengages the lock member (107) with respect to the pendulum member (66).
When the traveling machine body (9) is lifted while the lock lever (117) is swung so that the lock member (107) is engaged with the pendulum member (66), the lock member (107) with respect to the pendulum member (66) is lifted. An automatic unlocking mechanism for swinging the lock lever (117) so as to be disengaged is provided,
With the lock member (107), the pendulum member (66) cannot be swung with respect to the traveling machine body (9), and the traveling machine body (9) is left and right at an arbitrary angle by manual operation of the angle operation lever (119). Provide a manual angle adjustment mechanism that can operate the rolling valve (63) so that it can be tilted,
The angle lever (119) is attached to the lock lever (117) so as to swing the lock lever (117) with the angle lever (119) .
A spool operation lever (77) that operates the spool (68) of the rolling valve (63) by swinging, and a swing transmission mechanism that transmits the swing motion of the pendulum member (66) to the spool operation lever (77). (67) and an engagement member (162) that engages the spool operation lever (77) to operate the spool operation lever (77) by manual operation of the angle operation lever (119),
When the spool operation lever (77) is operated by the angle operation lever (119) in a state where the pendulum member (66) is not swingable by the lock member (107), the spool operation lever (77) is allowed to swing. Configured to
When the engagement member (162) is not operated by the angle operation lever (119) between the engagement member (162) and the spool operation lever (77), the pendulum member (66) is allowed to swing within a predetermined range. A transplanting machine characterized in that a swinging permission means is provided . The swing transmission mechanism (67) is configured to transmit the swing motion of the pendulum member (66) to the spool operation lever (77) via the spring member (102) .
When the spool operating lever (77) is operated by the angle operating lever (119) while the pendulum member (66) cannot be swung by the locking member (107), the spring member (102) is elastically deformed. transplanter according to claim 1, characterized in that the swinging of the spool operating lever (77) is configured to be allowed. A pair of contact portions (166, 167) is provided on one of the engagement member (162) and the spool operating lever (77), and the other is a cover positioned between the pair of contact portions (166, 167). A contact portion (89) is provided, and when the engagement member (162) is operated by the angle operation lever (119), the contact portion (166, 167) and the contacted portion (89) contact each other. By doing so, the operating force of the angle operating lever (119) is transmitted to the spool operating lever (77), and the interval between the pair of contact portions (166, 167) is set as the pendulum member (66). The transplanter according to claim 1 , wherein the transplanter is formed at an interval that allows oscillation within a predetermined range.

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