JPS5831910A - Rice planter - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a rice transplanter, in particular, a machine body equipped with a float and a seedling transplanting device, in which wheels are mounted on an axis via a wheel support case that can swing vertically, and this support The present invention relates to a rice transplanter in which a case is operatively connected to a piston member of a piston device, and the supporting case is swung under drive control by a control valve of the piston device to move the wheels up and down with respect to the machine body.

Conventionally, in this type of rice transplanter, when the seedlings are planted together at the end of a row, the drive of the seedling planting device is stopped, and the wheels are moved downward relative to the machine body under drive control by the control valve of the piston device. The entire body of the aircraft is lifted off the ground to reduce ground resistance due to the float, making it easier to rotate. It is difficult to stop the vehicle and the wheels are lowered to the maximum lowered position. Therefore, the next time you drive to plant seedlings, you have to raise the wheels significantly to return them to their original positions, and it takes time to return them to their original positions.・Alternatively, there are problems such as shallow planting, which may result in missing plants, reducing work efficiency.

By the way, in order to solve the problem mentioned above during rotation, the control valve of the piston device installed in the aircraft has a cylinder rod that is always biased toward the contraction side by a spring. lll
A pressure cylinder is provided, and a portion of the oil is supplied to the cylinder via a switching valve (while the control valve is interlocked with one end of a swinging member that is interlocked with the rond of the float). At the same time, the swinging member is opposed to the cylinder rod, and the wire end of a check lever for driving the swinging member and the switching valve is connected to the other end of the swinging member. When the check lever is operated, the 1:6 moving member and the switching valve are operated, and the piston device is actuated to drive and lower the wheels, and a portion of the pressure oil is supplied to the hydraulic cylinder. The cylinder rod is extended to forcibly swing the swinging member, and after a certain or almost certain period of time, the control valve is returned to the neutral position and the wheels are displaced downward, and the fJL wheel at the same time is A system has been proposed in which the amount of downward displacement of the hydraulic cylinder is limited to a predetermined amount to make it easier to move along and improve the workability. A part of the pressure oil of the control valve is supplied to drive the control valve, but
The pressure oil supplied from the control valve fluctuates due to the drive pressure of the piston device, the resistance to the field when the wheels connected to the piston device go up and down, etc., and the supply oil pressure cannot always be constant. When the oil pressure fluctuates, the change becomes larger (or smaller) due to the switching valve, making it impossible to drive the cylinder rod of the hydraulic cylinder with a constant supply oil pressure, and causing a time delay in driving the cylinder rod. occurs, making it impossible to obtain accurate braking.

The present invention was invented with attention to the above-mentioned problems, and it is possible to always limit the amount of downward displacement of the wheels during turning to make it easier to accompany the wheels, and to perform work accurately after turning. In this way, work efficiency can be improved, the amount of downward displacement of the wheels can be accurately regulated, and the mechanism can be simplified and operated efficiently11.
(Providing a planting machine.)

That is, the present invention interlocks and connects the operating section of the control valve of the piston device to the lever of the aircraft control section, and also provides a locking/disengaging device between the piston member of the piston device and the movable member provided near the piston member. The movable member is configured to be moved by the locking/disengaging tool as the piston member moves forward, and the movable member is connected to the operating portion of the control valve via a connecting member that can be expanded and contracted within a predetermined range. Embodiments of the present invention will be described below with reference to the drawings, which are characterized in that the amount of downward displacement of the wheels can always be regulated at a constant level by means of an extendable and retractable connecting member.

Figure 1 is an overall side view, and (1) is the fuselage,
The aircraft (1) includes a prime mover (2) and a mission case (
6) Also, a main body casing (5) with two planting claws (4), and a guide member C6 on the upper part of the casing (5).
), and a seedling platform (8) supported via (7). In addition, there is a ζ↓ planting depth adjustment link (10) and a buffer member (11) at the bottom of the body (1).
A wheel (14) is mounted on the body (1) via a wheel support case (13) which is vertically swingable. The wheels (14) are interlocked and connected to the prime mover (2), and the vehicle @ (14) is driven by the prime mover (2) to cause the body (1) to travel, and the prime mover (2) and the seedling The planting claws (4) of the planting device (9) are interlocked and connected, and the prime mover (2) drives the planting claws (4) to grab the seedlings on the seedling stand (8). The roots of the seedlings are planted into the soil.

Further, (15) is a control section of the fuselage (1) connected to the rear of the seedling planting device (9), and the control section (15) includes a control handle (16) and a storage case (20). An extended travel lever (17), a planting operation lever (18), and a side-by-side I-shift lever (19) are provided, and the planting operation lever (18) is installed in the storage case (20). Set up 1
It appears to be guided by a J-shaped guide groove (not shown).

Further, the wheel support case (16) is installed on the fuselage (1) as shown in FIGS.
(21), the control valve (35) of this piston device (21) causes the wheel support case (16) to swing, and the wheel (14) is moved to the fuselage (1). ) - is configured to move downward. That is,
The piston device (21) includes a piston member (22) that reciprocates rearward of the fuselage (1).The piston portion 4.4
' (22) is provided with a spring receiving plate (23) and a spring (26), and a support member (25) extending from the lock plate (24) is attached, and the support member (25) is attached to the piston. A guide rod (27) whose one end is fixed to the device (21)
) is supported via a spindle (29), while the lower part of the support member (25) is swingably supported via a swing play (28), and the wheel support is attached to both ends of the swing play (28). The swing arm (31), (31) connected to the base end of the case (13), (13) is a swing blonde (60),
(30), and the piston member (22)
The left and right wheels (14), (14) are adjusted in and out at the same time by moving the wheels forward and backward. Moreover, the swing brake 1- (
A lock bin (34) that restricts the swinging of the swing brake (28) is attached to the swing brake (23) so as to be able to come in and out through the support frame (70), and the lock bin (34) is attached to the fuselage (
1) is connected to a lever (not shown) provided on the grip of the control section (15) via a wire (33), while the lock bin (34) is connected to a regulation hole (32) provided in the lock plate (24). As it can be freely engaged and detached, it can be used for traveling, etc.
When driving on a flat road surface, the swing plate (28
) and the lock plate (24) are engaged and fixed via the lock bin (34), and the left and right wheels (14), (14)
O1 is supported at approximately the same height during ITT planting work.
At the same time, the lock bin (34) is removed from the lock brake (24), and the pressure oil supply of the piston device (21) is controlled by the control valve (35) installed in the i1 path. 13), (13) and the swing plate (2B) to make the left and right wheels (14), (14) move up and down with respect to the machine body (1) according to the unevenness of the tiller in the field. (1) is supported substantially horizontally.

Therefore, the operating part (66) of the control valve (35) is interlocked and connected to the lever (18) of the control part (15) of the aircraft body (1), and the one shown in the figure is the control valve. (6
5) includes a switching shaft (67) and a switching arm (68).
A swing arm (40) and an automatic elevation control plate (41) elastically connected by a spring (42) to a support shaft (69) provided on the - side of the piston device (21) are connected in series. The tip of the swing arm (40) and the switching arm (38) are connected via a coupling arm (43), and a float is attached to the control plate (41). A swing lever (47) that locks the pressure spring (44) and has a spring (46) interposed in the elongated hole (45) of the control plate (41)
), and the pressing spring (44) and the swing rod (4
7) to the body (1) via wires (81) and (91).
) It is interlocked and connected to the planting control lever (18) of the control section (15). Further, a locking/detaching tool (49) is provided between the piston member (22) of the piston device (21) and a movable member (48) provided near the piston member (22), and the locking/detaching tool (49) is configured to move the movable member (48) in accordance with the advance of the piston member (22), and also includes a connecting member (50) capable of expanding and contracting the movable member (48) within a predetermined range. The control valve (65) is operatively connected to the operating section (36) through the control valve (65).

That is, the movable member (with engagement N (51)...
48) can be movably mounted, the spring receiving plate (23
), a locking/detaching tool (49) that can be freely engaged with the engaging groove (51) is attached via the support frame (71), and the locking/detaching tool (49) is connected to the planting operation lever ( 18) to the wire (72
), and the movable member (48) is moved in accordance with the advance of the piston member (22) by the engagement of the locking and disengaging tool (49) with the movable member (48). Moreover, the long hole (53) provided in the movable member (48)
One end of the connecting arm (54) is inserted through the connecting arm (54), and a stopper (75) is provided at the insertion end of the connecting arm (54), while the end of the movable member (48) and the connecting arm (
A spring (55) is interposed between the connecting arm (54) and the other end of the connecting arm (54) is locked to the intermediate part of the swinging arm (40) constituting the operating section (36), so that the movable A connecting member (50) that allows the member (48) to expand and contract within a predetermined range.
The control valve (65) is operatively connected to the operating section (36) via the control valve (65).

Further, the automatic lift control board (41) has an automatic lift control board (41).
56) are connected via the elongated hole (57),
The lower end of the rond (56) is connected to the bearing sleeve (59) Ic via a shock absorbing spring (58), while the bearing sleeve (59)
) (60) integrally connected to the above flow) (
12), and the flow) (12) is fixed to the buffer member (
11), when the elevating iron (
, 56) and the operating section (36), the piston assembly fil (21) is driven to move the piston member (22) forward and backward to adjust the movement of the wheels (14) in and out. ) (12) The ground pressure is maintained at a substantially constant level.

The present invention is constructed as described above, in which seedlings are mounted on the seedling stand (8), and the prime mover (2) is used to move the wheels (14) and the planting claws (4) of the seedling planting device (9). While driving the machine (1) to run, it also plants seedlings and continuously performs rice planting work with the machine (1) accompanying it on the ridge. When the attached operation lever (18) is operated from the one upper end planting position of the U-shaped guide groove to the fixed position of the wheel 8-1 at the bottom of the U-shaped guide groove, the driving member (18) connected to the lever (18) is operated. The drive of the seedling planting device (9) is stopped via the lever (1
8) The connecting/disengaging tool (49) is engaged with the engagement groove (51) of the movable member (48) via the wire (72), and the float pressing spring (44) is connected to the wire (81). The swinging rod (47) is loosened through the wire (9
1), and in conjunction with this operation, the control valve (65) is driven via the operating section (filter 6).

That is, when the control plate (41) is driven in the direction of the arrow,
The swing arm (40), the coupling arm (43), etc. move to the left via the spring (42) connected to the control plate (41), driving the control valve (35) in the direction of raising the aircraft. However, in this case, the connecting arm (54) connected to the swing arm (40) is connected to the elongated hole (5) of the movable member (4B).
3) When the connecting arm (54) is moved against the spring (55) and the end of the connecting arm (54) comes into contact with the end surface of the elongated hole (53), the operating part (36) moves to the left. is stopped, and the drive of the control valve (35) in the direction of raising the aircraft body is restricted. Further, the operating portion (66) is moved via an extendable and retractable connecting member (50), and can be moved by a certain amount without being related to the movable member (48), and drives the control valve (65) within a predetermined range. It is possible.

Further, as the control valve (35) is driven, the piston member (22) of the piston device (21) is advanced, and the support member (25) and swing play (28) interlocked with the piston member (22) are moved forward. The wheels (14) are lowered via the airframe (1), and the flow (12) is pulled up by a certain amount in conjunction with the body (1).

That is, as the piston member (22) advances, the movable member (48) and the locking/disengaging tool (49) are locked, so the movable member (48)
2), and as a result of this movement, the connecting member (50) connected to the movable member (48) and the operating section (36) are pulled to the right, and the control valve (65) When the aircraft is returned to the neutral position from the raised position, the control valve (35)
When the piston member (22) returns to the neutral position, the piston member (22) is stopped from advancing, and the amount of downward protrusion of the wheel (14) is regulated to a constant amount, and the airframe (1) and the flow (1)
2) can be raised by a certain amount of ffi necessary for accompanying.

In this case, the amount of movement of the wheels (14) with respect to the body (1) is determined by connecting the movable member (48) and the operation part (66) with the connecting member (50) that can be expanded and contracted.
) relative to the machine body (1), i.e., even if the distance between the wheels (14) and the machine body (1) changes due to changes such as unevenness of the tiller, the position of the movable member (48) A certain amount of movement is obtained from the engagement position of the engagement groove (51) and the engagement/disengagement tool (49), and the wheel (
14) can be kept constant.

In addition, when the lever (18) is operated to the planting position of the U-shaped guide groove for planting work after the body (1) is brought along with the machine, the drive member connected to the lever (18) The seedling planting device (9) is driven by the lever (18).
At the same time, the float pressing spring (44) is pulled, and the swing sweat (47) is pushed so that the first operation part (36) The control plate (41) is moved in the opposite direction of the arrow, and along with this movement, the swing arm (40) etc. connected to the control plate (41) are moved to the right, and the control valve (41) is moved to the right. 65)
The control valve (65) is driven to move the piston member (22) backward, and the support member (2) interlocked with the piston member (22)
5) and swing play) (28) etc.
14) was raised, and the aircraft (1) and F a-) (12)
) is lowered.

In this case, the movable member (48) is regulated by the connecting arm (54) and the operating part (36), but the movable member (48) is
is retracted from the engagement groove (51) of the movable member (48), and the piston member (22) (the spring receiving plate (23) and the movable member (48) that are interlocked with each other are movable). , the piston member (22) can freely move backward.Also, the wheels (14), (14) are raised via the swing play (28), etc., and the flow (12) is When it touches the ground, the control plate (41) is raised via the rond (56), and along with this rise, the swing arm (40) etc. are driven to the left to open the control valve (65). Return the piston member (22) to the neutral position.
His retreat will be stopped.

In addition, when driving on one road, the planting operation lever (1
8) to the on-road driving position at the other upper end of the U-shaped guide groove, the drive of the seedling planting device (9) is stopped via the drive member connected to the lever (18), while the locking/disengaging tool ( 49
) is retracted from the movable member (48), and
The pressing spring (44) is the loosening rabbit 1 and the swinging rod (47)
is pulled, the control plate (41) of the operation section (36) moves in the direction of the arrow, and along with this movement, the control valve ( 65) in the direction of raising the aircraft, and in this case, the movable member (48) and the locking/unlocking tool (49) are separated from each other.
Piston member (22) l; [i protrudes to the end in the circular direction,
When located at the terminal end, the piston member (22) is attached to the support member (2
5) is locked by the guide member (27) and the oil supply of the piston device (21) is unloaded, so that the amount of downward protrusion of the wheel (14) is not restricted.
The wheel (14) is a supporting member (25) and a swing play)
(28), etc., and the fuselage (1) and flow (12) are completely pulled upwards.

In addition, as shown in FIG. 2, the engagement grooves (51) of the locking and disengaging tool (49) and the movable member (48) are formed with a vertical surface on the rear side and a downwardly inclined surface on the front side. is preferred.

By forming in this manner, it is possible to easily engage the locking device (49) and the engagement groove (51), and also to ensure the locking.

In addition, when the locking and disengaging tool (49) is formed in a tapered shape as described above, the locking and disengaging tool (49) is By increasing the strength, damage can be prevented.

In other words, when the above-mentioned aircraft (1) is accompanied by
9) is locked in the engagement groove (51) of the movable member (48),
As the piston member (22) advances, the piston member (
22) and moves to a certain position, the control valve (35) is activated via the movable member (48) and the operating section (66).
) is returned to the neutral position and the oil supply to the piston device (21) is stopped, but at the time of this stop, the piston member (
22) is retracted due to a retraction action due to leakage from the piston device (21), but the locking/disengaging tool (49)
Since it is locked in the engagement groove (51), a retreating action is applied to the locking/detaching tool (49), which may cause damage, and the movable member (48) and the locking/detaching tool (49)
It is better to have a high strength (1), but when looking for strength, it becomes a hexavalent one, and if it is weak, there is a risk of breakage. If the shape is formed so that it is easy to disengage from the engagement groove (51), even if the piston member [22] receives a retreating action from the piston device (21), the engagement/disengagement tool (49) spring (52) prevents the movable member (48) from retreating in an uneven manner from the engagement groove (51) and causing damage, and can be manufactured at low cost without the need to increase the strength.

Also, in the above embodiment, the movable member (48) has a long hole (56).
One end of the connecting arm (54) is inserted through the elongated hole (56), and a fixture (75) is provided at the insertion end to connect the pJ moving member (48) and the connecting arm (54). and the long hole (
When the control lever (18) is operated to a certain position in the U-shaped guide groove, the control valve (
65) is driven and controlled via the operating section (36), and
Here, the end of the connecting arm (54) is connected to the elongated hole (56).
The piston member (22) is brought into contact with the end of the piston member (22) to restrict the drive range of the control valve (35) via the operating portion (36).
It is assumed that the amount of downward protrusion of the wheel (14) is constant due to the advance of the movable member (4), as shown in Figure V54.
Adjustment plate (1) that regulates the length of the elongated hole (56) provided in
01) is provided on the 6iJ movable member (48).

In other words, the one shown in the figure has a slotted hole (48) in the movable member (48).
102) is movably attached via a fixing device (103) such as a screw.
By loosening the fixing plate (105), the adjusting plate (101
) is moved left and right through the elongated hole (102) to adjust the length of the elongated hole (56) provided in the surface M-J member (48), that is, the movement range of the connecting arm (54). That's what I did.

In this case, when the operating lever (18) is operated to the constant wheel extension position of the U-shaped guide groove, the control valve (35)
is controlled to be driven via the operating section (66), and the end of the connecting arm (54) is brought into contact with the end of the adjustment plate (101), so that the driving range of the control valve (35) is narrowed. The amount of downward protrusion of the wheels (124) can be reduced to a constant value,
The amount of downward protrusion of the wheel (14) can be adjusted by the adjustment plate (101). Immediately, as shown in FIG. 4, the adjustment plate (101) is advanced toward the elongated hole (53).・If the length of the elongated hole (53) is shortened, the connecting arm (54
), the control valve (35) is driven less (), the piston member (22) advances less, and the amount that the wheels (14) extend downward becomes smaller.

Also, the adjustment plate (IO'l) is moved in a direction away from the elongated hole (56) to increase the length of the elongated hole (56). (14)
The amount of downward protrusion of the wheels (14) can be increased, and the amount of downward protrusion of the wheels (14) can be adjusted depending on field conditions.

Therefore, by adapting it to the field conditions, easier moving work can be expected, and it can also be easily adapted.

As explained above, the present invention connects the operating part of the control valve to the lever of the aircraft control part, and also connects and disengages between the piston member of the piston device and the movable member provided near the piston member. A device is provided, and the movable member is configured to move with the advance of the piston member by the locking and disengaging device, and the movable member is connected to the control valve via a connecting member that can expand and contract within a predetermined range. Since the operating part bases are interlocked and connected, the operating part can be moved regardless of the movable members, and the device can be made extremely compact, and the operating resistance can be reduced, making it possible to operate efficiently. Moreover, the mechanism was simplified, making it easier to manufacture.

Furthermore, during the same period, the operating parts, movable members, and extendable connecting members allowed mechanical operations to be performed as specified, and the downward displacement of the wheels was always constant and accurately regulated.

[Brief explanation of the drawing]

FIG. 1 is an overall side view showing an embodiment of the present invention, FIG. 2 is an enlarged side view of essential parts, and FIG. 6 is a plan view of the same. (1)...Body (9)...Seedling planting device (12)...Float (16)...Wheel support case (14)...Wheel (15)...Control unit (18) ... Lever (21) ... Piston device (22) ... Piston member (35) ... Control valve (66) ... Operation section (48) ... Movable member (49) ... Locking/unhooking tool (50)...Connecting member

Claims (1)

[Claims] A wheel is mounted on a body equipped with a float and a seedling planting device via a wheel support case that can swing vertically, and this support case is interlocked and connected to a piston member of a piston device. The rice transplanter is configured to swing the support case under drive control by a control valve to move the wheels up and down relative to the machine body, and the operation part of the control valve is interlocked and connected to a lever of the machine body control part. on the other hand,
An engaging/disengaging device is provided between the piston member of the piston device and a movable member provided near the piston member, and the movable member is configured to be moved by the engaging/disengaging device as the piston member advances. In addition, a rice transplanter characterized in that the movable member is operatively connected to the operating section of the control valve via a connecting member that can expand and contract within a predetermined range of recesses.