JP3143239B2 - Adjustable structure of vertical feed mechanism of rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice planting machine having a vertical feeding mechanism for feeding seedlings placed on a seedling mounting table to a seedling take-out port side. Regarding the adjustment structure.

[0002]

2. Description of the Related Art In a rice transplanter, a seedling planting mechanism is constructed so that a seedling is taken out through a seedling take-out port and planted on the rice field. The placed seedlings are configured to be sent to the seedling removal port side by a vertical feeding mechanism. Such a rice transplanter is generally configured so that the amount of seedlings collected by the seedling planting mechanism can be changed. Therefore, when the amount of seedlings collected by the seedling planting mechanism is changed, the seedlings of the vertical feeding mechanism are adjusted accordingly. It is necessary to change the feeding amount so that the seedlings placed on the seedling mounting table can be sent to the seedling removal opening side by the vertical feeding mechanism regardless of the change in the seedling picking amount of the seedling planting mechanism. is there.

[0003] The seedling feed amount of the vertical feeder as described above is changed.
The techniques described in [1] and [2] below
Is conventionally known. [1] A seedling feed belt of a vertical feed mechanism is provided on the seedling placing surface of the seedling placing stand.
Then, move the seedling feed belt vertically at the left and right
Operation arm for feed operation and its operation arm
Contact and swing the operation arm from the standby position to the feed position.
And a driving cam member that moves.
Connect the operating rod to the
Extending upward along the back of the mounting table,
The standby position can be changed by changing the longitudinal position of the
Rice transplanter with seedling feed adjustment device (e.g.
See, for example, JP-A-59-156211). [2] A vertical feeding mechanism is provided on the seedling mounting surface of the seedling mounting table, and the vertical feeding machine is provided.
To move the structure vertically at the left and right moving end positions of the seedling rest
Operating arm and the operating arm that contacts the operating arm
Cam member that swings from the standby position to the feed position
And an operation arm separately from the operation arm.
Provide a stopper to determine the standby position of the
Connect the operation wire to the par and change the stopper posture.
The standby position of the operation arm can be adjusted by changing
(For example, Japanese Utility Model Publication No. 4-36579)
Gazette).

In each of the above prior arts, the operation of the vertical feed mechanism is performed.
If the standby position of the arm is changed toward the feed position,
Moving arm moves feed arm from standby position to feed position
The stroke at the time of operation becomes shorter,
Seedling feed becomes small. Conversely, the operation
Change the standby position of the camera away from the feed position
And the drive arm moves the operation arm from the standby position to the feed position.
The stroke of when it is moving operation becomes long, longitudinal feed
The feed amount of the seedling of the mechanism increases.

[0005]

The problem to be solved by the invention is as described in the above [1].
According to the prior art, changing the standby position of the operation arm
In terms of easy operation by pushing and pulling the rod
Although it is useful, perform an oscillating motion within a predetermined angle range.
Of the operating arm and the operating rod that is pushed and pulled
Members with different directions of movement are linked to each other
Swings in the push-pull movement of the operating rod
The vibration caused by the movement was added, and the movement was jerky
With the possibility of backlash and reduced durability.
Easy. Furthermore, the operating part of the operating rod is
It must be operated in the direction along the rocking surface,
Since there are significant restrictions on the placement position and operation direction of the pad,
The degree of freedom in design was low. In addition, the above [2]
According to the prior art described in (1), the operating arm is operated with a wire
To operate with the operation rod.
And the freedom of design compared to the former conventional technology.
It is useful in that it can increase the degree, but on the other hand,
There is such a problem. In other words, the operation arm
The standby position of the operating arm using the and the stopper
When the operation arm of the vertical feed mechanism is moved from the standby position to the feed position by the driving member, the operation arm moves away from the stopper and moves to the feed position. Moves from the feed position to the standby position side by the action of an urging member such as a spring, contacts the stopper, and returns to the standby position. Therefore, in a rice transplanter to which a large amount of mud or the like adheres during the seedling planting operation, when the operation arm returns from the feed position to the standby position, there is a possibility that mud or the like may be caught between the operation arm and the stopper. When mud or the like is caught between the operation arm of the vertical feed mechanism and the stopper in this way, the operation arm approaches the feed position by the amount of the caught mud from the standby position determined by the stopper, The standby position of the operation arm approaches the feed position by the amount of the trapped mud or the like, and the seedling feed amount of the vertical feed mechanism becomes smaller than a desired value.

The present invention provides a structure for adjusting a vertical feed mechanism of a rice transplanter, which has high durability and flexibility in design.
While, seedlings feed amount of longitudinal feeding mechanism by such entrapment such as mud, it is intended to prevent conditions such as becomes smaller than the desired value.

[0007]

The feature of the present invention resides in the following structure in the vertical feed mechanism adjusting structure of the rice transplanter described above. [1] Seedling feeding to send the seedlings placed on the seedling rest to the seedling take-out side
In a vertical feed mechanism equipped with a belt, the left side of the
The reinforcement frame extending to the right is wound around the seedling feed belt.
Through the path, attached to the back side of the seedling mounting table, the operation arm provided in the vertical feed mechanism, the vertical feed by contacting the operation arm and moving the operation arm from the standby position to the feed position a drive member for actuating the mechanism, provided with a biasing member which biases the operating arm to the standby position side, the operating arm, the operation
Wire for adjusting the seedling feed amount by moving the arm
Directly connect one end of the inner wire at
Attach one end of the outer wire to the reinforcing frame.
Fixed to over arm, by operating push <br/> to pull the inner wire in the wire, the standby position of the operating arm to change along the direction of movement of the operating arm, seedlings of the longitudinal feeding mechanism It is configured to adjust the feed amount.

[2] In a vertical feed mechanism provided with a seedling feed belt for feeding the seedlings placed on the seedling placing stand to the side of the seedling take-out port , as described in claim 2 , Reinforced frame over
Through the winding path of the seedling feed belt,
An operation arm mounted on the back side of the table and provided to the vertical feed mechanism, and a driving member for operating the vertical feed mechanism by moving the operation arm from a standby position to a feed position by contacting the operation arm. And an urging member for urging the operation arm toward the standby position side,
Move the operation arm to the operation arm and feed the seedlings
Of the inner wire in the wire to adjust the volume
Connect one end directly to the outer wire
One end of the ear is fixed to the reinforcing frame, and the wire
And the other end of the inner wire is connected to the adjusting lever seedlings up amount in the by adjustment lever of the seedling taking amount Wa
By changing the standby position of the operation arm along the moving direction of the operation arm by the push-pull operation of the ear ,
Even if it is configured to adjust the seedling feed amount of the vertical feed mechanism
Good.

[3] According to a third aspect of the present invention, in the configuration of the first or second aspect, the movement of the operation arm to the feed position side is transmitted to the vertical feed mechanism, and the operation arm is at the standby position side. A one-way clutch that does not transmit the movement to the vertical feed mechanism may be provided, and the one-way clutch may be disposed in a portion where the operation arm is provided in the vertical feed mechanism.

[0010]

[I] According to the features of claims 1 and 2, the wire is directly connected to the operation arm of the vertical feed mechanism, extends to the feed position side, and urges the operation arm to the standby position side. The standby position of the operation arm is determined by the wire and the urging member. Thereby, according to the features of claims 1 and 2,
By pulling the wire (pulling the wire by the seedling collection amount adjusting lever) and bringing the standby position of the operation arm of the vertical feed mechanism closer to the feed position along the moving direction of the operation arm, the driving member As a result, the stroke when the operation arm is moved from the standby position to the feed position is reduced, and the seedling feed amount of the vertical feed mechanism is reduced. Conversely, if the wire is pushed (by pushing the wire with the seedling removal amount adjusting lever), the standby position of the operation arm of the vertical feed mechanism is separated from the feed position along the movement direction of the operation arm In addition, the stroke when the operation arm is moved from the standby position to the feed position by the drive member increases, and the seedling feed amount of the vertical feed mechanism increases.

[II] According to the features of claims 1 and 2, as described in the above item [I], the standby position of the operation arm is changed by directly connecting a wire to the operation arm of the vertical feed mechanism. It is composed. Thus, in the features of claims 1 and 2,
Since the standby position of the operation arm can be changed directly by a wire, the position of the stopper that comes into contact with the operation arm is changed to change the standby position of the operation arm, as described in “Prior Art”. Compared to the configuration in which the operation arm is changed, when the operation arm returns from the feed position to the standby position, a state in which mud or the like is trapped between the operation arm and the stopper does not occur, and the standby position of the operation arm is changed. It can be set with high accuracy.

[III] When the wire is directly connected to the operation arm of the vertical feed mechanism, the operation arm is moved from the standby position to the feed position by the drive member. When
The operation arm pushes the wire. In this case, the wire is loosened and the movement of the operation arm from the standby position to the feed position is absorbed. There is no adverse effect on the control of the amount of seedlings. Further, since the operation is performed by a wire, the operation direction and the operation position of the wire on the side opposite to the operation arm can be freely set without being restricted by the operation direction and the operation position of the operation arm.

[IV] According to the first and second aspects of the present invention, the operation arm is connected to the operation arm.
One end of the outer wire that put in engagement by wire, before
Take the back of the seedling platform through the winding path of the seedling feed belt.
It is fixed to the attached reinforcement frame. Therefore, the seedling
A better position in the seedling feed direction than the feed belt location
Compared with the case where the outer wire fixing part is
The end on the operation arm side of the turwire is the operation arm.
Approaching and operated from the outer wire of the wire
Adjust the length of the exposed portion of the inner wire
Can be shorter. For this reason, mounting with high accuracy
And, as a result, accurate seedling feed adjustment can be performed.

[V] According to the feature of claim 3, similar to the case of claim 1 or 2, the "action" described in the above items [I], [II], and [III] is provided. It has the following "action". The vertical feed mechanism includes a one-way clutch that transmits the movement of the operation arm to the feed position side to the vertical feed mechanism and does not transmit the movement of the operation arm to the standby position side to the vertical feed mechanism. In many cases, the vertical feed mechanism is not operated when the urging member is moved from the feed position to the standby position by the urging member. When the one-way clutch is disposed at a portion where the operation arm is provided in the vertical feed mechanism, the operation arm and the one-way clutch can be disposed compactly.

[0015]

According to the first and second aspects of the present invention, in the vertical feed mechanism adjusting structure of the rice transplanter, a wire is directly connected to the operation arm of the vertical feed mechanism to change the standby position of the operation arm. By doing so, mud or the like is sandwiched between the operation arm and the stopper, and it is possible to avoid a state in which the seedling feed amount of the vertical feed mechanism becomes smaller than a desired value beforehand, The vertical feed mechanism can be operated stably at a desired seedling feed amount. Thereby, regardless of the change of the seedling picking amount of the seedling planting mechanism, the vertical feeding mechanism allows the seedlings to be stably sent to the seedling outlet side without excess or shortage, and improves the planting performance of the rice transplanter. I was able to. In addition, the operation der according to the wire
Therefore, how to operate the wire on the side opposite to the operation arm
The direction and operation position are the same as the operation direction and operation position of the operation arm.
Can be set regardless of the degree of freedom in design
Get higher.

According to the first and second aspects, when the operation arm of the vertical feed mechanism is moved from the standby position to the feed position by the driving member, the wire is loosened and the operation arm moves from the standby position to the feed position. Is absorbed and does not adversely affect the opposite side of the wire from the operation arm (the side of the wire that adjusts the amount of seedlings), so the durability is achieved by connecting the wire directly to the operation arm of the vertical feed mechanism. It does not involve a decrease in

According to the first and second aspects of the present invention, the operation is
Of the outer wire in the wire linked to the
One end is placed on the seedling through the winding path of the seedling feed belt.
Fixed to a reinforcing frame attached to the back of the table.
You. Therefore, use members to reinforce the seedling rest.
To bring the end of the outer wire closer to the operation arm.
be able to. For this reason, mounting can be performed with high accuracy, and
As a result, highly accurate seedling feed adjustment can be performed.

According to the features of claim 3, claim 1 or 2
"Effects of the Invention" of Claim 1 or 2 as in the case of
In addition to this “effect of the invention”, the following “effect of the invention” is provided. By arranging the one-way clutch at a portion where the operation arm is provided in the vertical feed mechanism, the operation arm and the one-way clutch can be compactly arranged. The structure of the vertical feed mechanism can be simplified and downsized.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a feed case 2 receiving power transmission from the machine is connected to a four-link mechanism 1 provided at the rear end of the machine (not shown). 3 and a plurality of planting transmission cases 4 extend rearward from the horizontal frame 3. Transverse frame 3 over the front end of planting transmission case 4
A transmission shaft is constructed in parallel with the above to constitute a transmission structure to the planting transmission case 4, a seedling planting mechanism 5 is provided at the rear end of the planting transmission case 4, and a seedling is planted above the planting transmission case 4. A seedling mounting table 6 that reciprocates sideways with a constant stroke in the left and right directions in conjunction with the planting operation of the mechanism 5 is provided to constitute a seedling planting device mounted on a riding type rice transplanter.

Next, the structure of the reciprocating lateral movement of the seedling mounting table 6 will be described. As shown in FIG. 2 and FIG.
A laterally extending reinforcing frame 7 is stretched over the rear side of the vehicle to reinforce the seedling mounting table 6 in the assembled state. A side wall 6A for dividing the mat-shaped seedlings W for each planting line is provided on the seedling stage 6, and the seedling stage 6 is divided by the side wall 6A into a seedling stage portion for each planting line. Reinforces the seedling table 6 in the assembled state.

As shown in FIGS. 2 and 3, a first bracket 9 extends forward from a reinforcing frame 7 which penetrates an internal space surrounded by a vertical feeder 8 which will be described later.
The transverse feed mechanism A of the seedling placing table 6 is connected to the second feeder. As shown in FIGS. 2 and 3, the helical shaft 10 extends laterally from the feed case 2, is externally fitted to the helical shaft 10, and
A moving body 11 that moves laterally in the axial direction of the
The movable member 11 is configured so that the movable body 11 is laterally moved integrally with the top member 12 by the rotation of the spiral shaft 10 by internally mounting the top member 12 that meshes with the spiral groove of the spiral shaft 10. The bracket 9 is connected via a connecting member 13. With the above configuration, the helical shaft 10 is rotated by the driving mechanism (not shown) of the feed case 2 to
1 is reciprocated laterally with a constant stroke, and the seedling mounting table 6 is reciprocated laterally with a constant stroke left and right.

Next, the vertical feeder 8 will be described. As shown in FIGS. 2, 3, and 4, the driving pulley 1 located below
4 and a driven pulley 15 located above, a belt 16 with a projection is wound to form a seedling feed belt mechanism 8a (corresponding to a vertical feed mechanism).
Are arranged side by side for each planting strip. The drive pulley 14 is provided with an operation arm 17 interlocked via a one-way clutch 20. In the descending direction in which the seedling feed belt mechanism 8a sends the seedling W downward, the drive pulley 14 and the operation arm 17 rotate integrally, The one-way clutch 20 is configured such that the interlocking state between the drive pulley 14 and the operation arm 17 is cut off in the anti-downward direction, and a helical coil that urges the operation arm 17 toward the anti-downward side of the seedling feed belt mechanism 8a. A spring 23 (corresponding to an urging member) is provided.

As a result, the drive arm 19 provided on the rotating shaft 18 which projects from the feed case 2 and constantly rotates.
The rotation trajectory (corresponding to the drive member) and the rotation trajectory of the operation arm 17 coincide with each other at the stroke end of the reciprocating lateral movement of the seedling mounting table 6, and as shown in FIG. Is moved from the standby position T to the feed position S, so that the seedling feed belt mechanism 8a feeds the seedlings W to the seedling takeout opening a side.

As shown in FIG. 3, an adjusting lever 25 for setting the standby position T of the operating arm 17 by the urging of the helical spring 23 is provided, and the adjusting lever 25 and the operating arm 17 are connected by a wire 21 having a Bowden cable structure. Linked and linked. The end of the wire 21 on the operation arm 17 side of the outer wire 21U is connected to the support member 22 of the seedling mounting table 6 so as to be relatively movable within a predetermined range in the axial direction of the wire 21 to connect the outer receiving portion b. The support member 22 is attached to the reinforcing frame 7 to which the receiving plate 24 is fixed. The inner wire 21 </ b> I of the wire 21 is directly connected to the operation arm 17, and the inner wire 21 </ b> I is connected to the support member 22 above the operation arm 17 (the operation arm 1).
7 at the feed position S side).

As shown in FIG. 3, the outer wire 21U
Is urged toward the adjustment lever 25 side, and the cylindrical portion of the end portion of the outer wire 21U on the operation arm 17 side is
A compression-type helical spring 26 is provided between the flange 21t of the outer wire 21U and the support member 22 so as to be supported by the support member 22 so as not to come off. The urging force acting on the outer wire 21U by the winding spring 26 is set to be larger than the urging force acting on the inner wire 21I connected to the operation arm 17 by the helical spring 23,
The urging force of the operation arm 17 to the standby position T by the helical spring 23 prevents the helical spring 26 from being compressed and deformed.

With the above arrangement, when the seedling picking amount of the seedling planting mechanism 5 is increased, the adjusting lever 25 is operated on multiple sides to return the inner wire 21I to the operation arm 17 side. Is changed to the lower position. When the standby position T of the operation arm 17 is separated downward from the feed position S in this manner, the stroke when the drive arm 19 moves the operation arm 17 from the standby position T to the feed position S increases, and The seedling feed amount of the feed belt mechanism 8a increases.

Conversely, when the seedling picking amount of the seedling planting mechanism 5 is to be reduced, the adjusting lever 25 is operated to the small side as shown in FIG. 4 and the inner wire 21I is pulled to the adjusting lever 25 side. Then, the standby position T of the operation arm 17 is changed to the upper standby position t. When the standby position T of the operation arm 17 is changed to the standby position t close to the feed position S, the stroke when the operation arm 17 is moved from the standby position t to the feed position S by the drive arm 19 is reduced. Thus, the seedling feed amount of the seedling feed belt mechanism 8a is reduced.

In this case, the movement of the operation arm 17 from the standby position T to the standby position t causes the seedling feed belt mechanism 8a to move.
Is actuated, and the seedling W is sent to the seedling take-out port a side and pressed against the guide rail 27 at the lower end of the seedling placing stand 6. This state is caused by the displacement of the outer wire 21 </ b> U due to the compression deformation of the winding spring 26. Since it can be absorbed, there is no inconvenience that the operation of the adjustment lever 25 becomes heavy or the seedling W is broken by being pressed against the guide rail 27. In this state, the operation arm 1
7 may not immediately move to the standby position t, but the subsequent operation of the seedling feed belt mechanism 8a returns the winding spring 26 to the original state, and immediately the operating arm 17
The standby position T moves to the standby position t.

As shown in FIG. 1, the lower end position of the seedling W placed on the seedling mounting table 6 is changed by a change lever (not shown), a change arm 29, and a bracket 30 bolted to the guide rail 27. Change mechanism B for changing the amount of seedlings
Is configured. As shown in FIG.
The support rod 30 is attached to the J-shaped bent plate 30a,
b is fixed at two places, and the bent plate 30a
The tip of the change arm 29 is inserted into the space 30c formed by the step (1).

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is an overall side view of a seedling planting apparatus.

FIG. 2 is a cross-sectional view showing a connection state between a seedling mounting table and a lateral feed mechanism.

FIG. 3 is a side view showing a structure in the vicinity of a vertical feed device.

FIG. 4 is a side view showing a structure near a lower portion of the vertical feeder.

FIG. 5 is a perspective view of a bracket for adjusting the amount of seedlings collected.

[Explanation of symbols]

 6 Nursery stand 8a Vertical feed mechanism 17 Operating arm 19 Drive member 20 One-way clutch 21 Wire 23 Biasing member 25 Adjusting lever a Seedling take-out port T, t Standby position S Feeding position W Seedling

Claims (3)

(57) [Claims] 1. A seedling feed belt (16) for feeding a seedling (W) placed on a seedling placing stand (6) to a seedling take-out opening (a) side.
In the vertical feed mechanism (8a), the reinforcing frame extends in the left-right direction of the seedling mounting table (6).
(7) is passed through the winding path of the seedling feed belt (16).
The operation arm (1) attached to the back side of the seedling mounting table (6) and provided in the vertical feed mechanism (8a).
7) and moving the operation arm (17) from the standby position (T), (t) to the feed position (S) by contacting the operation arm (17) to thereby move the vertical feed mechanism (8).
a), and a biasing member (23) for biasing the operation arm (17 ) toward the standby position (T), (t), and the operation arm (17). ), The operation arm (17)
Wire (21) for adjusting seedling feed by moving
One end of the inner wire (21I) at
Then, the outer wire (2) in the wire (21)
1U) is fixed to the reinforcing frame (7), and the inner wire (21I) of the wire (21) is fixed.
By pushing and pulling, the operation arm (1
7) The standby positions (T) and (t) are moved to the operation arm (1).
7) by changing along the moving direction of the vertical feed mechanism (8).
a) A vertical feed mechanism adjusting structure of a rice transplanter configured to adjust the seedling feed amount. 2. A seedling feed belt (16) for feeding a seedling (W) placed on a seedling mounting table (6) to a seedling take-out opening (a) side.
In the vertical feed mechanism (8a), the reinforcing frame extends in the left-right direction of the seedling mounting table (6).
(7) is passed through the winding path of the seedling feed belt (16).
The operation arm (1) attached to the back side of the seedling mounting table (6) and provided in the vertical feed mechanism (8a).
7) and moving the operation arm (17) from the standby position (T), (t) to the feed position (S) by contacting the operation arm (17) to thereby move the vertical feed mechanism (8).
a), and a biasing member (23) for biasing the operation arm (17 ) toward the standby position (T), (t), and the operation arm (17). ), The operation arm (17)
Wire (21) for adjusting seedling feed by moving
One end of the inner wire (21I) at
Then, the outer wire (2) in the wire (21)
1U) is fixed to the reinforcing frame (7),
Of the inner wire (21I) in the wire (21)
The other end is connected to an adjustment lever (25) for adjusting the amount of seedling, and the wire by the adjustment lever (25) for adjusting the amount of seedling
By changing the standby positions (T) and (t) of the operation arm (17) along the moving direction of the operation arm (17 ) by the push / pull operation of (21), the vertical feed mechanism (8a) is changed. A vertical feed mechanism adjusting structure of a rice transplanter configured to adjust a seedling feed amount of a rice plant. 3. The movement of the operation arm (17) toward the feed position (S) is transmitted to the vertical feed mechanism (8a).
And the standby position (T) of the operation arm (17),
A one-way clutch (20) that does not transmit the movement to the (t) side to the vertical feed mechanism (8a); and a portion where the operation arm (17) is provided in the vertical feed mechanism (8a); The structure for adjusting a longitudinal feed mechanism of a rice transplanter according to claim 1 or 2, wherein the one-way clutch (20) is arranged.