JP2572257Y2 - Height adjustment device for seedling presser in rice transplanter - Google Patents

Description

[Detailed description of the invention]

[0001]

The present invention relates to a device for adjusting the height of a seedling presser in a rice transplanter, more specifically, supported by a vertical rib of a seedling mounting table.
The present invention relates to a seedling holder height adjusting device for pressing a seedling placed on the seedling mounting table against a seedling mounting surface.

[0002]

2. Description of the Related Art Generally, a seedling transplanter is provided with a seedling table supported at the rear side of the body so as to be able to reciprocate in the machine width direction, and a seedling set on the seedling table is taken out from a lower part of the rice field. A vertical rib provided on both sides of the seedling mounting surface of the seedling mounting table is provided with planting claws or the like to be planted on the soil surface. Pressing the seedlings to prevent the set seedlings from floating or causing lateral displacement, resulting in inaccurate removal of the seedlings by the planting claws and occurrence of lack of seedling. While elastically pressing the set seedling on the seedling mounting table against the seedling mounting surface,
By taking out the seedlings with the planting nails, the seedlings can be taken out from the seedling mounting table with the planting nails reliably and satisfactorily, and the planting accuracy is improved.

The above-mentioned seedling holder is supported on the seedling table side via a height adjusting device so as to be vertically movable, and the size of the seedling set on the seedling table by this height adjusting device is small or soft. By adjusting the height of the seedling holder according to the state, etc., the seedling set can be reliably and smoothly transported and supplied to the planting claw side regardless of the state of the set seedling in the seedling mounting table, and The planting claw performs a reliable planting operation without causing the occurrence. Conventionally, as the height adjusting device, a column extending upward is erected on a vertical rib of the seedling mounting table, and a cylindrical support supporting the seedling holder is inserted into the column so as to be vertically movable. The screw is inserted into the support from the support, and the support is moved and fixed to an arbitrary height position with respect to the support by screwing the screw, thereby supporting the support. The set seedling holder is adjusted to an optimum height with respect to the set seedling.

[0004] In the above-described apparatus for adjusting the height of the seedling presser, the screw body is loosened due to body vibration or the like, so that the seedling presser holder moves up and down with respect to the support. May fluctuate arbitrarily, which may lead to poor seedling feeding of the set seedlings to the planting nail side, resulting in a lack of stock. Further, in order to prevent undesired vertical movement of the seedling retainer with respect to the column, the screw body may be strongly tightened with a tool or the like,
In such a case, when adjusting the height of the seedling presser at a seedling planting site such as a paddy field, there has been a problem that the screwing operation of the screw body cannot be easily performed and it is impossible to respond immediately.

Therefore, as a means for solving the above-mentioned problem, the present applicant has set up a column C on a vertical rib B of a seedling mounting table A as shown in FIG. A groove D is provided, and a cylindrical support F that supports a seedling presser E is movably inserted into the support C, and the support F has an operation piece G and is elastically engaged with the locking groove D. A leaf spring I having a mating engaging portion H is provided, and when adjusting the height of the seedling presser E, the operating piece G is manually pushed and operated to engage the engaging portion H with the locking groove D. By releasing the support F to a desired height and releasing the hand from the operation piece G at the moved position to engage the engaging portion H with the engaging groove D, the seedling presser E can be removed. While adjusting the height with one touch operation,
Of the set of seedlings is prevented from moving up and down.
We have proposed a height adjustment device for the seedling presser that can hold the seedlings at the optimum adjustment position according to the various states of the set seedlings. (Japanese Utility Model Application No. 4-43556)

[0006]

However, according to the seedling presser height adjusting device proposed above, the engaging portion H of the leaf spring I is moved by the weight of the seedling presser E so that the support F of the supporter F is moved. The inclination with respect to the support C, that is, the inclination of the support F with respect to the support C due to the rotation moment of the seedling presser E as shown by an arrow M in FIG. 8 is opposite to the position a where the support F contacts the support C. When the engaging portion H of the leaf spring I is engaged with the locking groove D, the support by the weight of the seedling presser E is formed. Due to the inclination of the body F with respect to the column C, a force is applied to the engaging portion H in a direction in which the engaging portion H is disengaged from the locking groove D, and the engaging portion H is likely to come off due to vibration or the like. In contrast, the spring force (biasing force) of the leaf spring I is increased. Then, the operation piece operating force becomes larger operation G is had trouble made painful.

The object of the present invention is to make it possible to easily adjust the height of the seedling presser by one-touch operation with a light operating force, and to use the own weight of the seedling presser to adjust the height after the height adjustment. Of the seedlings can be reliably prevented, and the seedling presser can be held at the optimal adjustment position according to the various states of the set seedlings. An object of the present invention is to provide a height adjustment device for a seedling presser foot.

[0008]

In order to achieve the above object, the present invention is supported by a vertical rib 85a of a seedling mounting table 85,
In the height adjustment device of the seedling presser for pressing the seedlings placed on the seedling mounting table 85 against the seedling mounting surface, a plurality of locking grooves 12a are provided on the tip end side of the column 12 erected on the vertical rib 85a. A cylindrical support 13 supporting the seedling presser 10 is movably inserted through the column 12, and the support 13 has an operation piece 17 and is urged in the direction of engagement with the locking groove 12a. A holding body 16 having an engaging portion 16a elastically engaged with the locking groove 12a by this bias is provided, while the engaging portion 16a is attached to the support 13 by the weight of the seedling presser 10. The support 13 is provided on the side of the support 12 in contact with the support 12 at an inclination with respect to the support 12, and is engaged with the locking groove 12a.

[0009]

When adjusting the height of the seedling presser 10 according to the size of the seedling set on the seedling mounting table 85 or its softness, the operation piece 17 is pressed against the elastic urging force of the holder 16. Then, the engaging portion 16a of the holding body 16 is easily disengaged from the locking groove 12a of the support 12 by a pushing operation with a hand or the like, and the support 13 Is free to move, therefore, in such a state, while moving the support body 13 with respect to the support column 12, height adjustment is performed so that the seedling holder 10 is at an optimum height with respect to the set seedlings, After this adjustment, the user releases his / her hand from the operation piece 17 so that the engagement portion 16a of the holding body 16 is released.
Is easily engaged with the locking groove 12a of the column 12 by the urging force, and the support body 13, that is, the seedling presser 10 is immovably fixed to the column 12 at a predetermined adjustment height position. .

Further, the engaging portion 16a is connected to the seed presser 1
The support 13 is provided on the side where the support 13 comes into contact with the support 12 by the inclination of the support 13 with respect to the support 12 due to its own weight of 0, and is engaged with the locking groove 12a. At the time of engagement with the groove 12a,
The engaging portion 16a is positively engaged with the locking groove 1 by utilizing the inclination of the support 13 with respect to the column 12 due to its own weight.
It can be urged in the engaging direction to engage with 2a. As a result, the engagement portion 16a
Can be reliably prevented from being disengaged from the engaging groove 12a, and at the same time, the urging force of the holding body 16 to the engaging groove 12a is reduced to perform the disengagement operation with a light operating force. You can do it.

[0011]

FIG. 6 shows a riding type multi-row type rice transplanter. This rice transplanter has an engine 2 mounted on the front upper portion of an airframe 1 and the outer periphery of the engine 2 is covered with a bonnet 3. At the same time, a driver's seat 4 provided with a control seat 41 and a steering wheel 42 is provided at an upper rear portion of the fuselage 1, and a pair of left and right front wheels 5 is supported on both front sides of the fuselage 1, and
A pair of right and left rear wheels 6 driven by the engine 2 are supported on both rear sides of the body 1. In addition, a seedling plant 8 is supported at the rear of the body 1 via a parallel link mechanism 7 having a top link 71 and a pair of left and right lower links 72 so as to be vertically movable. 8
Is a planting case 81 to which rotational power is transmitted from the engine 2, a plurality of transmission cases 82 supported so as to be able to transmit power in the body width direction of the planting case 81, and the transmission case 82 is rotatable freely. The plant includes a plurality of supported planting claws 83, a plurality of floats 84 that receive and support the entire load of the planting device 8, and a seedling mounting table 85 that entirely reciprocates in the machine body width direction.

More specifically, as shown in FIGS. 1 and 6, the seedling mounting table 85 has a plurality of vertical ribs 85a and a seedling mounting surface disposed on the bottom side between the vertical ribs 85a. A bottom plate 85b, and an opening plate 85c provided at a lower end side of the bottom plate 85b, and upper and lower rail frames 85d extending in the body width direction at upper and lower portions on the back side of the bottom plate 85b.
85e, a rolling element 87 provided on a supporting rod 86 extending upward from the planting case 81 is inserted into the upper rail 85d, and the lower rail frame 85e is inserted.
Is slidably supported on a guide rail 89 fixed to a bracket 88 extending from the transmission case 82, and the entire seedling mounting table 85 is moved in the width direction with respect to the machine body 1 through the respective rail frames 85d and 85e. Reciprocable. Also,
The guide rail 89 is provided with a seedling extraction plate 89a having a plurality of slits arranged below the seedling mounting table 85.
The planting claws 83 are made to protrude into the inside, and the seedlings on the seedling mounting table 85 are taken out with the planting claws 83 and planted on the paddy soil surface.

When the seedling table 85 moves to both ends in the machine width direction by reciprocating movement, the set seedlings on the bottom plate 85b are placed at the intermediate portion of the seedling table 85 in the vertical direction. A vertical feeding device 9 for forcibly transporting the seedlings on the bottom plate 85b by the vertical feeding device 9 to the planting nails 83 side by the vertical feeding device 9 is provided on the side.
To securely take out the seedlings from the seedling mounting table 85.

A plurality of the vertical feeders 9 are provided between the vertical ribs 85a, and a plurality of the vertical feeders 9 are provided in accordance with the number of planting strips. These vertical feeders 9 are provided as shown in FIGS. ,
A plurality of support frames 9 disposed on the rear side of the bottom plate 85b of the seedling mounting table 85 in the vertical direction in the body width direction.
1, common driven and drive shafts 92 and 93 supported on the upper and lower portions of each support frame 91, and the respective shafts 92 and 93
Driven and driven rollers 9 rotatably supported by
4 and 95 and the rollers 94 and 95,
A plurality of transport belts 96 having a large number of protrusions 96a protruding outward with respect to the bottom plate 85b of the seedling mounting table 85 are provided. Further, as is apparent from FIG.
2, the transport belt 96 is located below the support frame 91 located at the center in the machine width direction at the center in the longitudinal direction.
, A cylindrical rotating body 97 having a one-way clutch on at least one side.
And a swing arm 976 protruding from each of the rotating bodies 97 is connected by a connecting member 97c extending in the machine body width direction. At the center of the belt 95 in the width direction, the cam body 98 is mounted, while the planting case 8 is mounted.
1 is an operating arm having a transmission mechanism inside the rotating shaft 100 which always rotates during seedling planting operation is protruded to both sides, and a rotor 99a contacting the cam body 98 at both ends of the rotating shaft 100. 99 are provided.

During the seedling planting operation, when the seedling mounting table 85 moves to one end position in the machine body width direction, and the cam body 98 faces one of the operating arms 99, 99 which are always rotating, By pushing the cam body 98 with the rotor 99a of the operating arm 99, the swing arm 97b is swung through the connecting member 97, and the drive shaft 93 is swung at a predetermined angle through the one-way clutch. The transport belt 96 is rotated by a predetermined pitch in the seedling feed direction, and the seedlings set on the seedling mounting table 85 by the protrusions 96a provided on the transport belt 96 are moved toward the planting claws 83 side. The seedlings 83 are forcibly conveyed, and the seedlings are securely extracted by the planting claws 83 so as to be planted on the paddy soil surface.

Further, each vertical rib 85a of the seedling mounting table 85
The seedling mounting table 8 from above the lower side of each vertical rib 85a.
5, a plurality of rod-shaped seedling pressers 10 having a substantially L shape and extending upward at a predetermined interval from the bottom plate 85b are attached to the bottom plate 85b.
b, by elastically pressing the seedling set from above to prevent the set seedling from floating or laterally dislodging, and by taking out the seedling with the planting nail 83, the planting nail 83 is removed. In this way, the removal of the seedlings from the seedling mounting table 85 can be performed reliably and satisfactorily to increase the planting accuracy.

Each of the seedling holders 10 is provided with the seedling mounting table 8.
5 is vertically movably supported by a vertical rib 85a via a height adjusting device A, and the height adjusting device A is used to set each of the above-mentioned seedlings according to the size or the softness of the seedling set on the seedling mounting table 85. By adjusting the height of the seedling presser foot 10,
No matter what the state of the set seedling 5 is, said planting claw 83
The plant is reliably and smoothly transported and supplied to the side, so that the planting claw 83 can perform a reliable planting operation without causing the occurrence of lack of stock.

Thus, the height adjusting device A of the seedling presser 10 as described above is configured as follows. That is, as clarified in FIGS. 1 and 2, the mounting base 11 having the cylindrical portion 11a is fixed to the upper surface of the lower part of each vertical rib 85a of the seedling mounting base 85 via the fixing bracket B such as a bolt. And a support column 12 bent in a rectangular shape on the cylindrical portion 11a.
Is inserted and fixed, and a plurality of locking grooves 12a are formed in the upper end side of the support column 12 in a vertical step, and a cylindrical support 13 is movably inserted into the support column 12. In addition, a connecting plate 14 is integrally attached to the lower side of the peripheral surface of each of the supports 13, and a common shaft rod 14 a projecting in the machine width direction is provided between the connecting plates 14. A bracket 15 having a substantially U-shape is integrally mounted on the upper side of the peripheral surface of the support 13 opposite to the connecting plate 14 while supporting the proximal end side of the seedling presser 10. 1 and 4, a leaf spring having an engaging portion 16a formed of an engaging hole which can be inserted into the support post 12 at the distal end and is elastically engaged with the locking groove 12a. A substantially L-shaped holder 16 made of an elastic material such as
1 and 4 in a state of being constantly urged in the direction of the arrow X, and fixed via fixing brackets 18 such as bolts and nuts,
As shown in FIG. 5, the engagement portion 16 a of the holding body 16 is tilted with respect to the locking groove 12 a of the support 12 by the weight of the seed presser 10 with respect to the support 12 due to its own weight.
That is, as shown by an arrow M in FIGS. 5 and 1, the support 13 is tilted with respect to the support 12 by the rotation moment of the
The operation piece 17 is configured to be engaged at a position a side where it comes into contact with, and at the tip of the holding body 16, the engagement portion 16 a capable of releasing the engagement with the engagement groove 15 a is released. It is mounted so as to protrude upward along the column 12 via a fixing bracket 19 such as a bolt or a nut.

Each locking groove 12 provided in the support column 12
As shown in FIG. 4, a is preferably provided with a tapered portion 12b at the boundary between the outer peripheral surface of the column 12 and the locking groove 12a, and in this case, the tapered portion 12b
Thus, the engagement portion 16a provided on the holding body 16 can be easily engaged with and disengaged from each of the locking grooves 12a. still,
The locking groove 12a may be formed by an annular groove as in the embodiment, or a concave groove may be formed only on one side of the support column 12 on the engaging side.

In the embodiment shown in FIG.
a, a sub-planter presser 18 extending from the seedling presser 10 to near the lower end side of the seedling mounting table 85 is attached to the lower side of the mounting of the height adjusting device A, and the sub-planter presser 18 and the seedling presser 10 The set seedlings on the bottom plate 85b are reliably and smoothly conveyed and supplied to the planting claws 83, so that the set seedlings on the bottom plate 85b can be reliably taken out by the planting claws 83 and planted on the paddy soil surface. .

Next, the operation of the height adjusting device A having the above configuration will be described. When adjusting the height of the seedling holder 10 with respect to the bottom plate 85b according to the size of the seedlings set on the seedling mounting table 85 or the soft state, first,
When the operation piece 17 is pushed by hand against the elastic biasing force of the holding body 16, the engaging portion 16 a of the holding body 16 is easily detached from the locking groove 12 a of the column 12. Since the support 13, that is, the seed presser 10 is free to move with respect to the support 12, the seed presser 10 is moved in this state while moving the support 13 up and down with respect to the support 12. The height is adjusted so that the seedlings set to the optimum height are set. After the height adjustment, when the user releases his / her hand from the operation piece 17, the engaging portion 16a of the holding body 16 is moved by the elastic biasing force of the support 1a.
The support 13, that is, the seedling presser 10 can be immovably fixed to the support 12 at a predetermined optimum height position by being easily engaged with the second locking groove 12 a.

The engaging portion 16a is connected to the seedling presser 1
The support 13 is provided on the position a side where the support 13 comes into contact with the support 12 by an inclination due to a rotational moment of the support 13 with respect to the support 12 due to its own weight of 0, and is engaged with the locking groove 12a. When the portion 16a is engaged with the engagement groove 12a, the support 1
3 using the inclination of the support member 12 with respect to the support column 12.
6a can be positively urged in the engaging direction for engaging with the locking groove 12a. Accordingly, it is possible to reliably prevent the engagement between the engagement portion 16a and the engagement groove 12a from being disengaged at the time of vibration or the like, and to reduce the urging force of the holding body 16 against the engagement groove 12a. Thus, it can be set that the disengagement operation is performed with a light operating force. Therefore, while the height adjustment of the seedling presser 10 can be easily performed by one-touch operation with a light operating force, after the height adjustment, movement from the adjustment position due to vibration or the like is prevented by utilizing the own weight of the seedling presser. By holding the seedling presser at the optimum adjustment position according to various states of the set seedling, the planting nail can be securely planted without causing the occurrence of a lack of stock.

In the above-described embodiment, since the direction in which the engaging piece 16a and the engaging groove 12a are disengaged by the operating piece 17 is the direction approaching the support 13, the operating piece 17
When the operation is performed, the operation piece 17 and the support body 13 are grasped with one hand to simultaneously release the engagement and hold the seedling presser 10, thereby making it possible to easily adjust the seedling holder 10 up and down.

FIG. 7 shows another embodiment of the height adjusting device A, in which a plurality of locking grooves 12a are formed in the lower part on the tip side of the support column 12 in the form of upper and lower steps. 12, a cylindrical support 13 supporting the seedling presser 10 is movably inserted in the same manner as in the above-described embodiment, and the upper part of the peripheral surface of the support 13 facing the connection plate 14 is roughly A shaped bracket 15 is integrally attached to the bracket 15, and the bracket 15 has a substantially L-shaped holding member made of an elastic material having an engaging portion 16a elastically engaged with the locking groove 12a at a lower end portion. With the body 16 constantly urged in the direction of arrow Y in FIG.
8, the engaging portion 16a of the holding body 16 is engaged with the locking groove 12a of the support 12 by the weight of the seed presser 10 as shown in FIG. The support 13 is configured to engage at the position b side where the support 13 contacts the support column 12 with the inclination of the rotational moment with respect to the angle of rotation.
The operation piece 17 which is capable of releasing the engagement with the engagement groove 15a is protruded upward along the column 12, and is attached via a fixing metal 19 such as a bolt or a nut.

In the height adjusting device A, as in the case of the above-described embodiment, the height of the seedling presser 10 can be easily adjusted by one-touch operation with a light operating force. Uses the weight of the seedling holder to prevent movement from the adjustment position due to vibration, etc., and holds the seedling holder at the optimum adjustment position according to the various conditions of the set seedlings, so that planting can be performed without causing a lack of stock. Since the planting operation can be reliably performed with the hooks, and the direction of releasing the engagement between the engaging portion 16a and the engaging groove 12a by the operation piece 17 is also the direction approaching the support 13, When the operation piece 17 is operated, the disengagement and the holding of the seedling presser 10 can be simultaneously performed by grasping the operation piece 17 and the support body 13 with one hand, whereby the vertical adjustment of the seedling presser 10 can be easily performed. .

[0026]

As described above, in the present invention, the height of the seedling presser which is supported by the vertical ribs 85a of the seedling mounting base 85 and presses the seedlings placed on the seedling mounting base 85 against the seedling mounting surface side. In the adjusting device, a plurality of locking grooves 12a are provided at the distal end side of the column 12 erected on the vertical rib 85a.
2, a cylindrical support 13 supporting the seedling presser 10 is movably inserted into the support 2, and the support 13 has an operation piece 17 and is urged in the direction of engagement with the locking groove 12 a. A holding body 16 having an engaging portion 16a elastically engaged with the locking groove 12a by urging is provided, while the engaging portion 16a is moved by the weight of the seed presser 10 to the support column of the support 13. 12
The support 13 is provided on the side that comes into contact with the support column 12 at an angle with respect to the support column 12 and is engaged with the locking groove 12a. When adjusting the height of the seedling presser 10 according to
The operation piece 17 can be pushed and operated by hand, and the operation can be easily performed by a one-touch operation only by releasing the hand from the operation piece 17.
The support 1 is tilted by the rotational moment of the support 13 with respect to the support column 12 due to the weight of the seed presser 10.
3 is provided on the side in contact with the column 12, and the locking groove 1 is provided.
2a, when the engaging portion 16a is engaged with the engaging groove 12a, the inclination of the support 13 with respect to the support column 12 due to the weight of the seedling presser 10 is utilized. 16a can be positively urged in the engagement direction in which the engagement groove 12a is engaged. Therefore, the urging force of the holding body 16 to the engagement groove 12a is reduced, and the engagement by the one-touch operation is reduced. The release operation of the engaging portion 16a with respect to the locking groove 12a can be easily and easily performed with a light operating force, and at the time of engaging the engaging portion 16a with the engaging groove 12a, the own weight of the seedling presser 10 is used. Can be securely prevented from coming off during vibration, etc., and securely held at the optimal adjustment position according to the various conditions of the mat seedlings. You can do the work.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a height adjusting device of a seedling presser according to the present invention.

FIG. 2 is a partial rear view of the height adjusting device for the seedling presser viewed from below.

FIG. 3 is a partially cutaway rear view of the vertical feeding device.

FIG. 4 is a vertical cross-sectional side view showing an engagement state of an engaging portion of a holding member in a retaining groove of a holding body.

FIG. 5 is an explanatory view of the inclination of the support with respect to the support column due to the weight of the seedling presser.

FIG. 6 is a side view showing the entire structure of the rice transplanter.

FIG. 7 is a side sectional view showing another embodiment of the height adjusting device of the seedling presser.

FIG. 8 is an explanatory view of a height adjustment device of a seedling presser proposed earlier.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Seedling retainer 12 Prop 12a Locking groove 13 Cylindrical support 16 Holder 16a Engagement part 17 Operation piece 85 Seedling holder 85a Vertical rib

Claims (1)

(57) [Scope of request for utility model registration] 1. supported by a vertical rib 85a of a seedling mounting table 85,
A seedling presser height adjusting device for pressing seedlings placed on the seedling mounting table 85 against a seedling mounting surface side, wherein a plurality of locking grooves 12a are provided at a tip end side of a support 12 erected on the vertical rib 85a. At the same time, a cylindrical support 13 supporting the seedling presser 10 is movably inserted through the support 12, and the support 13 has an operation piece 17 in the direction of engagement with the locking groove 12 a. The holding member 16 having an engaging portion 16a which is urged and elastically engages with the locking groove 12a by this urging is provided, while the engaging portion 16a is supported by the weight of the seedling presser 10 by its own weight. A height adjustment of a seedling presser in a rice transplanter, wherein the support 13 is provided on a side of the body 13 inclined with respect to the support 12 so that the support 13 is in contact with the support 12 and is engaged with the locking groove 12a. apparatus.