JPH10243712A - Apparatus for detecting height of ridge in transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transplanter capable of preventing damage of parts of an interlocking member for transmitting change in height of ridge to a control valve for controlling a cylinder for lifting and lowering a traveling machine body from a ground member for detecting change in height of ridge when excess force from ground side acts on the ground member. SOLUTION: A ground member 71 is attached to a swinging member 72 vertically swingable supported around a supporting shaft 73 to a traveling machine body and an interlocking member 78 which is relatively swtichable around the supporting shaft 73 to the swinging member 72 and interlocked and connected to a control valve 77 Of a cylinder fOr lifting and lowering the traveling machine body is provided and an energizing means 79 for energizing the ground member 71 in the grounding direction and a control means 80 for controlling swinging of the swinging member 72 by energizing force of the energizing means 79 to make the swinging member 72 and the interlocking member 78 integrally swingable and interposing the swinging member 72 so as to relatively swing to the interlocking member 78 against the energizing force of the energizing means 79 when excess force from ground side acts on the ground member 71 are provided between the swinging member 72 and the interlocking member 78.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ridge height detecting device for a transplanting machine for transplanting seedlings such as vegetables into a ridge while running over a ridge.

[0002]

2. Description of the Related Art A transplanter for upland fields for transplanting pot seedlings such as vegetables is provided with a traveling body that runs across a ridge.
A transplanting device is provided behind the traveling body so that seedlings are planted on the ridge while traveling along the ridge (for example, Japanese Patent Application Laid-Open No. 5-6). In this transplanting machine, the traveling body is configured such that a traveling body composed of an engine, a transmission case, and the like is supported by front and rear wheels disposed on both right and left sides thereof so as to be able to move up and down, and is mounted on a frame attached to the traveling body so as to be able to move up and down. The plant is supported, and the plant is pushed into the ridge so that the seedling held inside the plant is planted in the ridge. Further, there is an apparatus in which a change in the height of a ridge is detected and the traveling machine body is moved up and down in response to the change in the height of the ridge, so that the planted body is moved up and down in response to a change in the ridge height.

The traveling machine body is configured to move up and down by vertically moving the left and right rear wheels relatively to the traveling machine body by an elevating cylinder composed of a hydraulic cylinder. The device for detecting the height of the ridge is configured by attaching a ground roller to the upper surface of the ridge on a swing arm that is swingably supported around the left and right axes of the traveling machine body. The ridge height is detected by using

[0004] The swing arm is linked to a spool of a control valve for controlling the vertical movement of the vertical cylinder.

[0005]

In the above transplanting machine, when entering the ridge, the traveling body is raised to the uppermost position, and after entering the ridge, the traveling body is lowered, and the ground roller contacts the upper surface of the ridge. When the spool of the control valve returns to the neutral position, the descent of the traveling aircraft stops, and thereafter, the traveling aircraft is controlled to rise and fall according to the ridge height by the lifting cylinder, but the engine is stopped. When the traveling body is lowered at, the hydraulic pump is not operating,
Even after the ground roller touches the ground and the spool of the control valve returns to the neutral position, the traveling body further descends, and when the swing arm reaches the upper limit, the ground roller is pressed by excessive force from the ground, and the lifting cylinder There is a concern that parts of the interlocking mechanism that interlocks the control valve and the swing arm may be damaged.

Accordingly, the present invention has been made in view of the above problems,
It is an object of the present invention to consider preventing breakage of the component when an excessive force acts on the ground roller from the ground.

[0007]

The technical means taken by the present invention to achieve the above object is that the traveling body 2 which supports the traveling body 8 so as to be able to ascend and descend by wheels 10 and 11 arranged on both right and left sides thereof. The traveling body 8 is provided with a grounding member 71 that moves up and down while following the ground on the upper surface of the ridge R.
In the transplanting machine in which the control valve 77 of the traveling body elevating cylinder 63 is actuated by the vertical movement of the traveling body 8 to raise and lower the traveling body 8 in accordance with the change in the height of the ridge R, the traveling body 8 is rotated around the support shaft 73. A swing member 72 supported to be vertically swingable.
The grounding member 71 is attached to the
And an interlocking member 78 which is relatively swingable around the support shaft 73 and is interlocked with a control valve 77 of the traveling body elevating cylinder 63.
Between the biasing means 79 for biasing the grounding member 71 in the ground contact direction, and the swinging member 72 by the biasing force of the biasing means 79.
The swing member 72 and the interlocking member 78 can be integrally swung by restricting the swing of the swing member 72, and when an excessive force from the ground side acts on the grounding member 71, the swing member 72 is attached. A regulating means interposed so as to relatively swing with respect to the interlocking member 78 against the urging force of the urging means 79 is provided.

The restricting means is constituted by a Bowden cable 80, one end of the outer cable 80A of the Bowden cable 80 is fixed to the interlocking member 78,
It is preferable to lock the end of the inner cable 80B to the swing member 72.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 4 shows a transplanter 1 for transplanting seedlings such as vegetables into the ridges R. In FIG. 4, the vegetable transplanter 1 is a walking type having a transplanting device 3 and a steering handle 4 behind a traveling body 2, The soil block seedlings are automatically planted at predetermined intervals on the ridges R while running in the longitudinal direction across the ridges R.

The traveling direction of the transplanter 1 is referred to as the front-back direction, and the lateral direction perpendicular to the traveling direction is referred to as the left-right direction. The traveling body 2 has a gantry 6 attached to and fixed to a front portion of the transmission case 5 in a forwardly protruding manner, and has a traveling body 8 mainly constructed by mounting an engine 7 and the like on the gantry 6. Front wheel 10 and rear wheel 1 provided with 8 on both left and right sides
1 so that it can run.

The transplanting device 3 is provided on a transplanting frame 12 mounted on the rear of the traveling machine 8 and includes a planting body 13 for planting a seedling in a ridge R, and a seedling supply for supplying a seedling to the planting body 13. When the ridges R are covered with a multi-film, the device 14 is mainly composed of a device 14 and a soil covering member 15 for burying the planted seedlings on the root side and repressing the root portion. A piercing means for forming an attachment hole is provided.

The transplant frame 12 includes a fixed frame 12A having a front portion fixed to the transmission case 5 and a movable frame 12B having a front portion pivotally mounted on the transmission case 5 so as to be rotatable about a left-right axis 5A. The seedling supply device 14 is provided on the fixed frame 12A, the steering handle 4 is attached to the rear end of the fixed frame 12A, and the plant 13 and the soil covering member 1 are mounted on the movable frame 12B.
5 are supported.

The plant 13 is supported by a swing link mechanism 17 as shown in FIG. The swing link mechanism 17 includes a first parallel link 1 whose upper end is pivotally supported by a bracket 18 fixed to the movable frame 12B and swings back and forth.
9, a relay plate 20 pivotally connected to the lower end of the first parallel link 19, and a second parallel link 21 whose front end is pivotally supported by the relay plate 20 and swings up and down. The plant 13 is pivotally connected to the rear end of the link 21.

A bearing 22 is fixed to the upper link 21a of the second parallel link 21. A crankshaft 23 having a crank journal rotatably supported on the left and right axes is supported on the movable frame 12B. A crank pin 23b between the 23 crank arms 23a is inserted into the bearing 22. Therefore, when the crankshaft 23 rotates counterclockwise in FIG.
The rocking of the parallel links 19 and 20 causes the planting body 13 to swing up and down while swinging up and down, so that the planting body 13 draws a vertically long substantially elliptical trajectory with respect to the traveling body 2. Exercise.

The planting body 13 has an upper part formed of a tubular body having an upper and lower opening, and a lower part having an opener which can be opened and closed back and forth. Then, the seedlings 13 are supplied with the seedlings dropped and supplied at the upper end of the track and lowered with the opener closed, and the lower part of the opener enters the ridge R at the lower side of the track and interlocks after the entry. The opener is opened back and forth by the tool 24 to form a planting hole in the ridge R, and the seedling stored in the planting body 13 is dropped and released in the planting hole, so that the seedling is formed in the ridge R. Planted.

The seedling supply device 14 includes a seedling table 25 that moves intermittently in the left-right direction so as to laterally feed a seedling tray T provided with a large number of pot portions P containing soil block seedlings. A seedling delivery device 26 that is disposed on the front side and takes out seedlings one by one from the seedling tray T and transports the seedlings to the planting body 13. Note that the seedling mounting table 25 is provided with a vertical feeding mechanism for vertically feeding the seedling tray T by one pitch of the pot portion after one row of the seedlings is taken out.

As shown in FIGS. 2, 3 and 6, the soil covering member 15 is composed of a frusto-conical roller, and is disposed in a pair on the right and left sides of the planting body 13 so as to sandwich the planting portion. Then, the upper surface of the ridge R is rolled and moved, and the soil is pressed from both the left and right sides against the root side of the planted seedling to bring in the soil and at the same time suppress the stump. The earth covering member 15 is used for the movable frame 1.
2B, it is rotatably supported by a rear portion of a soil cover frame 28 which is rotatably supported by a bracket 27 fixed to a rear portion of the 2B around a left and right axis 29. The soil covering frame 28 is connected to the movable frame 12B via a planting depth adjusting mechanism 30, and the rear part of the movable frame 12B is supported by the soil covering member 15.

The planting depth adjusting mechanism 30 includes an operation lever 31 which can swing freely around the left and right axes, and an operation lever 3
1 mainly includes a locking member 32 that locks the operation lever 1 and a connecting member 33 that connects the operation lever 31 and the cover frame 28. The locking member 32 is formed of a plate material and is disposed in a forwardly inclined state below the grip 4A of the steering handle 4 (see FIG. 4).
The bracket 35 is fixed to a pair of left and right brackets 35. The bracket 35 is fixed to a mounting member 34 fixed to the rear end portion of the movable frame 12B. It has been extended.

As shown in FIGS. 3 and 5, a guide groove 36 for allowing the operation lever 31 to swing is formed on the right side of the locking member 32. The locking portion 36a for restricting the swing is provided by the operation lever 31.
Are formed at intervals in the swing direction. The connecting member 33 penetrates the middle part of the left and right brackets 35 in the left-right direction and is fixed (or rotatably supported) to the cylindrical shaft 37.
And is rotatably supported around the left and right axes,
The lower portion of the operation lever 31 is attached and fixed to the rear upper portion of the connecting member 33 by bolts and nuts, and the operation lever 31 can be swingably operated around the left and right axes. The operation lever 31 has a locking portion 36 a of the guide groove 36.
Is provided with a locked part 31a.

The operating 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 swing is regulated. By gripping the gripping portion of the operation lever 31 and inclining the locked portion 31a so as to be disengaged from the locking portion 36a against the urging force, a swing operation of the operation lever 31 is enabled. ing.

On the other hand, the front lower end of the connecting member 33 is supported by a bracket 38 which is supported at the rear center of the cover frame 28 at the center in the left-right direction so as to be rotatable around the left-right axis via a left-right support shaft 39. Are pivotally connected. Therefore, by swinging the operation lever 31 downward, the covering member 15 is lifted with respect to the movable frame 12B, and the distance between the soil cover member 15 and the movable frame 12B is reduced. Conversely, by swinging the operation lever 31 upward, , Movable frame 1
2B, the soil covering member 15 is lowered and the movable frame 1
2B (the vertical swinging position of the covering member 15 with respect to the movable frame 12B can be adjusted). As a result, the movable frame 12B swings up and down. The depth of entry into the R, that is, the planting depth of the seedlings can be changed.

In the illustrated example, the height of the movable frame 12B becomes higher and the planting depth becomes shallower as the position where the operating lever 31 is locked to the locking portion 36a goes upward, and the depth becomes lower as it goes downward. It has become. In addition, a hit 40 made of a rod material that can contact the fixed frame 12A is fixed to the rear upper portion of the movable frame 12B, and a rod that the movable frame 12B can contact is formed at the rear end of the fixed frame 12A. 41 hits are fixed and 4 hits
The vertical movement of the movable frame 12B with respect to the fixed frame can be adjusted between the position where 0 contacts the fixed frame 12B and the position where the movable frame 12B contacts the contact 41.

As shown in FIGS. 6 and 8 to 10, a height gauge 42 is provided between the fixed frame 12A and the movable frame 12B to indicate the relative height of the movable frame 12B with respect to the fixed frame 12A. ing. The height gauge 42 is connected to the pointing member 4 fixed to the handle 4 side.
3 and a marking member 44 fixed to the locking member 32, and is located at a position above the rear of the implantation frame 12 and below the handle 4 for easy viewing.

The handle 4 is formed by mutually connecting rear ends of a pair of left and right support rods fixed to the fixed frame 12A. A support plate 46 is connected to a connection member 45 for connecting the lower portions of the left and right support rods. The indicating member 43 is attached and fixed to the support plate 46 by bolts 47. The bolt insertion hole 48 of the pointing member 43 is formed as a vertically long hole, and the vertical position of the pointing member 43 is adjustable. A contact portion 49 serving as a stop is formed. The pointing member 43 projects backward from the support plate 46, and the projecting portion is bent leftward to form a pointing portion 43a. The pointing portion 43a becomes narrower toward the left. It is in the shape.

The marking member 44 is fixed to the lower surface of the locking member 32 and rises upward. A rear surface of the rising portion is a marking portion 44a.
Are provided with upper and lower limit lines 50a and 50b. As will be described later, the movable frame 12B is positioned so that the tip of the indicator 43a is located between the upper and lower limit lines 50a and 50b.
Is adjusted relative to the fixed frame 12A.

The rear end of the movable frame 12B is connected to the fixed frame 12A by a link mechanism 51 as shown in FIG.
And the movable frame 12B is urged upward by an urging means 52 provided between the link mechanism 51 and the handle 4. The urging force of the urging means 52 can be adjusted by a lever.

As shown in FIGS. 4 and 11, a support frame 53 on which a battery is mounted is mounted and fixed to the front of the gantry 6 of the traveling body 2, and a lower portion of the support frame 53 has an axial center in the left-right direction. The left and right inner end sides of a pair of left and right front wheel support shafts 55 are rotatably inserted around the left and right shafts, and the left and right front wheel support shafts 55 are fixed to the support tube 54. A mounting cylinder 56 is fitted on the end side.

A front wheel support arm 57 is provided on each of the left and right mounting cylinders 56.
The upper end of the front wheel 10 is connected and fixed, and the front wheel 10 is attached to the lower end of each front wheel support arm 57 via an axle so as to be rotatable around the left and right axes. The outer end sides of the left and right front wheel support shafts 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 are connected to the front wheel support shaft 5.
It can be swung up and down about five times.

The outer ends of the left and right front wheel support shafts 55 and the mounting cylinder 56 are fixed by pins penetrating both, and the insertion holes for the pins formed on the outer end sides of the left and right front wheel support shafts 55 are axial center. The left and right positions of the front wheel 10 can be adjusted (that is, the wheel distance of the front wheel 10 can be adjusted). The rotational power of the engine 7 is transmitted to the transmission case 5
And transmitted to the left and right output shafts 58 so as to be connectable and disconnectable. The left and right output shafts 58 are provided at a lower portion of the rear wheel 11 provided below the transmission case 59 via a chain winding transmission mechanism 60 in a transmission case 59 rotatably supported on the left and right sides of the transmission case 5 around the output shaft 58. Linked to
The rear wheel 11 is driven to rotate by the engine 7.

The left and right transmission cases 59 can be independently changed to two positions in the left-right direction independently, and the distance of the rear wheel 11 can be adjusted by moving the transmission case 59 left and right. In addition, it is possible to cope with the difference (wide and narrow) in the ridge width between the entire multi ridge and the high ridge. In the illustrated example, the right and left front and rear wheels 10 and 11 are set to positions when the transmission case 59 is set to the wide position, and the left and right front and rear wheels 10 and 11 are set to positions when the transmission case 59 is set to the narrow position. However, during normal use, the left and right positions are set to the wide position or the narrow position.

A rolling shaft 61 disposed in the left-right direction is supported at a middle portion in the front-rear direction of the gantry 6 via a bearing 62 so as to be rotatable around the left-right axis and to be movable back and forth. An elevating cylinder 63 composed of a hydraulic cylinder is arranged in front of the middle part in the direction and fixed to the gantry 6. The piston rod 63 of the lift cylinder 63
A is connected to a rolling shaft 61 via a cylindrical body or the like which is fitted to the shaft 61 so as to be relatively rotatable, and the rolling shaft 61 can be moved back and forth by the retraction of the piston rod 63A.

The rolling shaft 61 can be fixed to the gantry 6 by fixing means. FIG.
12, brackets 64L and 64R are fixed to the left and right sides of the rolling shaft 61, front connection brackets 65L and 65R are fixed to the left and right front wheel support shafts 55, and rear left and right transmission cases 59 are fixed to the left and right transmission cases 59. Side connection bracket 6
The brackets 6L and 66R are fixed, the right bracket 64R projects downward, and the left bracket 64L and the front and rear connecting brackets 65L, 65R, 66L and 66R project upward.

The brackets 64L, 64R and the rear connection brackets 66L, 66R are connected by a connection link 67, and the front connection brackets 65L, 65R and the rear connection brackets 66L, 66R are connected by a connection rod 68. Note that a pair of left and right connecting portions of the brackets 64L, 64R and the front connecting brackets 65L, 65R are provided so as to be able to cope with the right and left position adjustment of the transmission case 59.

By moving the piston rod 63A of the elevating cylinder 63 up and down, the left and right connecting links 67 are pushed and pulled back and forth, and the rear connecting bracket 66
L and 66R, the transmission case 59 swings up and down relatively to the traveling body 8, and the connecting rod 68 is pushed and pulled back and forth to connect the front connecting brackets 65L and 65R, the front wheel support shaft 55 and the mounting cylinder 56. Through the front wheel support arm 57
Swings up and down relatively to the traveling body 8, whereby the left and right front and rear wheels 10 and 11 simultaneously move up and down relative to the traveling body 8 and the front and rear wheels 10 and 11 contact the ground. As a result, the traveling machine body 8 inevitably moves up and down with respect to the ridge R, and can follow the change in the height of the upper surface of the ridge R to move the transplanting device 3 up and down.

A rolling cylinder 69 composed of a hydraulic cylinder is mounted on the gantry 6 so as to move along with the rolling shaft 61, and a piston rod 69 A of the rolling cylinder 69 is pivotally mounted on a bracket 70 fixed to the rolling shaft 61. ing. Therefore, by moving the piston rod 69A of the rolling cylinder 69 back and forth, the rolling shaft 61 rotates around the left and right axis, one of the left and right connecting links 67 is pulled forward, and one of the left and right connecting rods 68 is moved forward. Pushing, the other left and right connecting link 67 is pushed rearward, and the other right and left connecting rod 68 is pulled rearward, so that the traveling body 8 and the transplanting device 3 are kept horizontal even on an inclined ground. Is available.

As shown in FIGS. 1, 2 and 4, below the rear side of the transmission case 5 and in front of the planting body 13, the upper surface of the ridge R is rolled to change the height of the ridge R. Contact member 71 composed of a roller for detecting the
The rocking member 72 is disposed on the left and right sides of the grounding member 71 and on the left and right sides of the transmission case 5 so as to be inclined forward so as to move upward as going forward.

The swing member 72 is supported by a support shaft 73 whose front portion penetrates through the swing member 72 and is screwed to the transmission case 5 so as to be swingable around the left and right axes. A grounding member 71 is rotatably mounted on the part via a pivot 74 so as to be rotatable around the left and right axes, and the rear ends of the left and right swinging members 72 are connected to each other by a connecting member 75. Therefore, when the grounding member 71 follows the change in the height of the upper surface of the ridge R, the swing member 72 swings around the support shaft 73 and detects the change in the height of the ridge R.

A locking arm 76 extending forward is integrally formed at the front of the left swinging member 72, and the left support shaft 73 is interlocked with a control valve 77 for controlling the elevating cylinder 63. The linked interlocking member 78 is pivoted about the right and left axis.
2 are supported so as to be able to swing relative to each other. Spring engaging portions 76a and 78a are provided at the front portions of the locking arm portion 76 and the interlocking member 78, respectively.
An urging means 79 composed of a tension coil spring is interposed between 78a, and the swinging member 72 and the grounding member 71 are urged in the grounding direction. At the rear of the interlocking member 78, there is provided a mounting portion 81 to which the front end side of the outer cable 80A of the Bowden cable (restriction means) 80 is mounted so that the mounting position in the length direction can be adjusted. Further, the front end side of the inner cable 80B of the Bowden cable 80 is movably inserted in an insertion hole 82a formed in a locking portion 82 provided in the swinging member 72 in the longitudinal direction, and the inner cable 8B.
The inner cable 80 </ b> B is locked to the locking portion 82 by fixing the contact member 107 that does not insert the insertion hole 82 a to the distal end portion of the swinging member 72 by the urging force of the urging means 79. Of the support shaft 73 is regulated.

The locking portion 82 has an inner cable 80
B is formed into the insertion hole 82a from the outside in the radial direction, and the inner cable 80B is inserted into the insertion hole 8a.
2a, the inner cable 80 is plastically deformed so that the width of the notch groove is reduced.
B is prevented from coming off. The urging force of the urging means 79 does not increase due to the pressing force from the ground acting on the grounding member 71 during the normal planting operation. Therefore, the grounding member 71 swings by following the upper surface of the ridge R. The member 72 and the interlocking member 78 swing integrally about the support shaft 73.

An arc-shaped long hole 83 is formed at the front upper portion of the interlocking member 78, and a pin 84 is slidably fitted in the long hole 83. The pin 84 is an up-and-down valve having a rectangular shape in side view. The arm 85 is pivotally connected to one end. An intermediate portion of the lift valve arm 85 is rotatably supported on the body of the control valve 77 fixed to the upper part of the transmission case 5 via a support shaft 86 around a left-right axis. An engagement groove 87 is formed on the end side. A pin 88 a provided at one end of an operation lever 88 formed of a bell crank is engaged with the engagement groove 87, and an intermediate portion of the operation lever 88 is attached to a rotating spool 89 of a control valve 77. I have.

Therefore, when the grounding member 71 is lowered, the swinging member 72 and the interlocking member 78 are swung clockwise in FIG. 1 around the support shaft 73, and the elevating valve arm 85 is turned around the support shaft 86 in FIG. It rotates clockwise, whereby one end of the operating lever 88 is pulled up, the rotating spool 89 of the control valve 77 is operated in the direction of lowering the traveling machine body 8, and the piston rod 63A of the lifting cylinder 63 moves in the retracting direction. The traveling body 8 is operated until the rotating spool 89 returns to the neutral position.
Descends.

When the grounding member 71 rises, the swinging member 72 and the interlocking member 78 rotate counterclockwise in FIG. 1 around the support shaft 73, and the elevating valve arm 85 rotates around the support shaft 86 in FIG. It rotates clockwise, whereby one end of the operating lever 88 is pulled down, the rotating spool 89 of the control valve 81 is operated in a direction to raise the traveling machine body 8, and the piston rod 63 </ b> A of the elevating cylinder 63 moves in the protruding direction. The traveling body 8 is raised until the rotating spool 89 returns to the neutral position.

The arc shape of the elongated hole 83 has a radius such that the swinging operation of the swing member 72 around the support shaft 73 is proportional to the swing operation of the lift valve arm 85 around the support shaft 86. And accurately transmits the change in height of the ridge R to the control valve 77. The radius of the long hole 83 can be obtained by simulation using a CAD or by calculation or the like.

The other end of the operation lever 88 is hooked to one end of a sensitivity spring 90 composed of a tension spring, and the other end of the sensitivity spring 90 is hooked to a hook member 91 fixed to the fixed frame 12A. The pressing force of the grounding member 71 against the upper surface of the ridge R can be changed by changing the position at which the sensitivity spring 90 is locked to the locking member 91, whereby the following sensitivity of the grounding member 71 to the upper surface of the ridge R can be changed. Can be adjusted.

As shown in FIGS. 1 and 2, the movable frame 12B and the elevating valve arm 85 are interlockingly 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 for interlocking the one end of the bell crank 93 and the movable frame 12B, and a bell crank 93. And an interlocking rod 96 for interlockingly connecting a connecting plate 95 fixed to the elevating valve arm 85, and a middle part of the interlocking rod 96 has a turnbuckle structure.

The interlocking rod 96 and the connecting plate 95 are arranged such that the pin 97 pivotally attached to the connecting plate 95 slides in the front and rear long groove 99 formed on the connected plate 98 fixed to the interlocking rod 96. They are interlocked and connected by being freely fitted.
Accordingly, even if the grounding member 71 moves up and down during the planting operation, the pin 97 relatively slides in the long groove 99, so that the vertical movement of the grounding member 71 is allowed and the planting depth is adjusted. At this time, even if the movable frame 12B swings up and down, the control valve 77 is not affected. Also,
During the planting operation near the outlet (the end in the planting direction) of the ridge R, when the ground member 71 comes off the ridge R, the pin 97 is engaged with the front end of the long groove 99 and the ground member is fixed. 71 is suspended, and the soil covering member 15 functions as a detection roller for detecting the height of the upper surface of the ridge R in order to control the elevation of the traveling machine body 8.

As shown in FIG. 3, FIG. 5, and FIG. 7, the grounding member 71 is
The height relative to is adjustable. The vertical adjustment mechanism 100 mainly includes an operation lever 101 that can swing freely around the left and right axes, the locking member 32, and the Bowden cable 80. The relative height of 71 with respect to the transmission case 5 can be easily adjusted.

A guide groove 102 for allowing the operation lever 101 to swing is formed in the locking member 32 on the left side of the guide groove 36.
The locking portion 102a that regulates the swing of the operating lever 101
Are formed at intervals in the swing direction. The operating lever 101 is the operating lever 3 of the planting depth adjusting mechanism 30.
1, is fixedly mounted on a relay lever 104 fixed to a support shaft 103 which is rotatably inserted through the cylindrical shaft 37, and is supported swingably around a left and right axis. The operation lever 101 is provided with a locked portion 101a that fits into the locking portion 102a of the guide groove 102.

It is to be noted that the operating lever 101 is, like the operating lever 31, moved by a biasing means such as a spring.
1a is urged so as to fit into the locking portion 102a, and its swing is regulated.
Of the locked portion 101 against the urging force.
By tilting a so as to be disengaged from the locking portion 102a, the operation lever 101 can be swingably operated.

The rear end of the outer cable 80A of the Bowden cable 80 is attached to a stay 105 fixed to the mounting member 34 and the bracket 35 so as to be adjustable in the longitudinal direction. The rear end of the inner cable 80B is connected to the rear end of the inner cable 80B. It is pivotally connected to the relay lever 104 via a connection fitting 106. Therefore, by swinging the operation lever 101 downward, the inner cable 80B is pulled,
The swing member 72 is supported by the support shaft 73 against the urging force of the urging means 79.
1, and the grounding member 71 moves upward relative to the transmission case 5. At this time, since the interlocking member 75 is interlockingly connected to the control valve 77, the swinging member 72 swings relatively to the interlocking member 75. When the grounding member 71 is in contact with the upper surface of the ridge R, the control valve 77 corresponds to the amount by which the swinging member 72 swings.
Is moved in a direction to lower the traveling body 8, and the traveling body 8 descends.

Further, the traveling body 8 is lifted and the ground member 7 is lifted.
1 is lifted from the upper surface of the ridge R, and the operation lever 101 is swung upward in the opposite direction, whereby the inner cable 80B is pulled by the urging force of the urging means 79, and the swing member 72 is moved. 1, and the grounding member 71 moves downward relative to the transmission case 5. When the grounding member 71 is in contact with the upper surface of the ridge R, the control valve 77 corresponds to the amount by which the swinging member 72 swings.
Is moved in a direction to raise the traveling body 8, and the traveling body 8 is raised.

In the above construction, the urging means 79 does not extend due to the pressing force from the ground during the normal planting operation as described above, and the swinging member 72 and the interlocking member 78 are integrally formed. When the traveling body 8 is lowered while the engine 7 is turned off (that is, the hydraulic pump is not operating) and the interlocking member 78 does not oscillate due to the regulation of the control valve 77, The swinging member 71 swings upward relative to the interlocking member 78 against the urging force of the urging means 79 in response to the thrust from the side. At this time, the inner cable 80A is
Since the movable portion 2a is freely movable in the length direction, the locking portion 82 moves along the length direction with respect to the inner cable 80A, and allows the swing member 71 to swing.

The swing of the swing member 71 causes the rotation spool 89 of the control valve 77 and the pins 84 and 88 to rotate.
a, the shaft 86 and the like are prevented from being damaged. Further, in the above-described configuration, while the grounding member 71 is in contact with the upper surface of the ridge R, the lifting and lowering of the traveling body 8 is performed by the grounding member 71, so that the planting depth is increased. When the operation lever 31 is swung downward, the movable frame 12
In some cases, the rear portion of B moves down and comes into contact with the contact 41 of the fixed frame 12A, so that the movable frame 12B does not move down any further and the earth covering member 15 floats from the upper surface of the ridge R and becomes suspended. Conversely, when the operation lever 31 is swung upward, the rear portion of the movable frame 12B rises, and the contact 40 of the movable frame 12B comes into contact with the fixed frame 12A. May not be able to swing upward.

Therefore, in such a case, the swinging member 72 and the grounding member 71 are moved up and down by the up and down adjustment mechanism 100 to raise and lower the traveling body 8, and the movable frame 12B
Adjustment is made so that the contact point of the contact 40 with the fixed frame 12A and the position of the movable frame 12B with the contact point 41 are located. Then, the above-described instruction unit 43
a are the upper and lower limit lines 50a, 50a of the indicator 44a.
b, it indicates that the hit 40 is located near the fixed frame 12A or the movable frame 12B is located near the hit 41, and the tip of the indicating portion 43a is the upper and lower limit line of the indicator 44a. When the distance exceeds 50a, 50b, the tip of the indicator 43a is moved to the upper and lower limit lines 50a, 50b.
The vertical position of the movable frame 12B relative to the fixed frame 12A may be adjusted so as to be located between 0b.

When the engine 7 is stopped with the engine 7 stopped, the rotary spool 89 of the control valve 77, the pin 84, and the support shaft 86 are pushed up from the ground side against the ground contact member 71.
As a countermeasure for preventing breakage, etc., the front portion of the swinging member 72 is bolted so that the relative swinging position with respect to the interlocking member 78 can be adjusted, and the middle portion of the left and right swinging members 72 is opposed to the urging force of the urging means. At the time of a normal planting operation, the rocking member 72 and the interlocking member 7 are pressed by the pressing force from the ground.
When the interlocking member 78 does not oscillate due to the regulation of the control valve 77 when the traveling body 8 is lowered with the engine 7 turned off, On the other hand, it was conceived that the swing member 71 bends in the middle part. However, in this case, since only the left swing member 71 is connected to the interlocking member 78, the ground member 71 is bent. There is a problem that the grounding load (compression load) is different between the left side and the right side. However, according to the present invention, such a problem does not occur and the structure is simple.

[0056]

According to the present invention, during a normal planting operation, the relative rotation of the swing member 72 and the interlocking member 78 around the support shaft 73 is controlled by the urging means 79 and the regulating means. The rocking member 72 and the interlocking member 78 are integrally rotated by being constrained, whereby the vertical movement of the grounding member 71 by following the upper surface of the ridge R is transmitted to the control valve 77 of the cylinder 63 for lifting and lowering the traveling body, The traveling body 8 is moved up and down in response to the change in the height of the ridge R. However, when the engine is stopped and the power source of the cylinder 63 is not operating, the traveling body 8 is moved down, for example, so that the ground member 71 is lowered. When an excessive force from the ground side acts on the swinging member 72, the swinging member 72 swings relatively to the interlocking member 78 against the urging force of the urging means 79, and the swinging member 72 moves between the interlocking member 78 and the control valve 77. Prevents damage to parts of the interlocking mechanism.

The restricting means is constituted by a Bowden cable 80, and one end of the outer cable 80A of the Bowden cable 80 is fixed to the interlocking member 78.
By locking the end of the inner cable 80B to the swing member 72, the relative height of the grounding member 71 to the traveling machine body 8 can be easily adjusted by pushing and pulling the inner cable 80B.

[Brief description of the drawings]

FIG. 1 is a side view of a ridge height detecting device.

FIG. 2 is a side view of the planting section.

FIG. 3 is a plan view of the rear part of the planting part.

FIG. 4 is an overall side view of the transplanter.

FIG. 5 is a plan sectional view showing a support structure of the operation lever.

FIG. 6 is a side view of a planting depth adjusting mechanism.

FIG. 7 is a side view showing an operation system of a vertical adjustment mechanism of the grounding member.

FIG. 8 is a side view of the gauge.

FIG. 9 is a plan view of a gauge.

FIG. 10 is a rear view of the gauge.

FIG. 11 is a plan view of the traveling body.

FIG. 12 is a side view showing an elevating mechanism of the traveling machine body.

[Explanation of symbols]

 2 traveling body 8 traveling body 10 front wheel 11 rear wheel 63 elevating cylinder 71 grounding member 72 swinging member 73 support shaft 77 control valve 78 interlocking member 79 biasing means 80 Bowden cable (restriction means) R ridge

Claims (2)

[Claims] 1. A traveling body (2) having a traveling body (8) supported by wheels (10) and (11) disposed on both left and right sides thereof so as to be able to ascend and descend, and the traveling body (8) is provided with a ridge (R). A grounding member (71) that moves up and down following grounding is provided on the upper surface, and the control valve (77) of the cylinder (63) for lifting and lowering the traveling body is operated by the vertical movement of the grounding member (71) to move the traveling body (8) Is moved up and down in response to a change in the height of the ridges (R). A rocking member (72) supported by the traveling body (8) so as to be vertically swingable around a support shaft (73). A ground member (71) is attached, and the swing member (72) is swingable relative to the swing shaft (73) around the support shaft (73), and is linked to a control valve (77) of a traveling body lifting cylinder (63). The interlocking member (78) is provided. (78), a biasing means (79) for biasing the grounding member (71) in the ground contact direction, and a swing of the swinging member (72) caused by the biasing force of the biasing means (79). And the swinging member (72) and the interlocking member (78) can be integrally swung, and when an excessive force from the ground side acts on the grounding member (71), the swinging member (72) ) Is biasing means (79)
A ridge height detecting device for a transplanting machine, further comprising a regulating means interposed so as to swing relatively to the interlocking member (78) against the urging force of the ridge. 2. The regulating means is constituted by a Bowden cable (80), one end of the outer cable (80A) of the Bowden cable (80) is fixed to the interlocking member (78), and the other end of the inner cable (80B). The ridge height detecting device for an implanting machine according to claim 1, wherein the portion is locked to a swing member (72).