JP2552152Y2 - Walking 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 walking rice transplanter in which a worker performs a steering operation or the like while following a rear side of the machine and continuously performs rice transplanting work.

[0002]

2. Description of the Related Art Conventionally, there is provided a lifting / lowering cylinder for adjusting the height of the machine by moving a traveling wheel in and out, and a hydraulic valve is operated by a vertical movement of a float to automatically control the lifting / lowering cylinder. In order to prevent the machine from rising due to the lift signal from the float when turning off, the technology to operate the hydraulic valve to prevent the machine from rising and the technology to operate the float to prevent the machine from rising there were.

[0003]

In the prior art, a wire for operating a hydraulic valve or a float is provided separately from a wire for operating a main clutch, and two wires are connected to a main clutch lever. There was a problem that the work such as maintenance was troublesome.

[0004]

According to the present invention, the main clutch lever for connecting and disconnecting the main clutch is connected to the main clutch lever by wire, and a valve operating arm for operating the elevator cylinder is provided. In the walking rice transplanter, the main clutch arm is connected to a valve operating arm via a lifting control wire, and one wire is connected to the main clutch lever to perform operations such as assembly and maintenance. Can be easily performed, and even if there is a problem with the lifting control wire, it does not affect the operation of the main clutch, and can be handled safely.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is an explanatory plan view of a main part, FIG. 2 is an overall side view of a walking rice transplanter for two-row planting, FIG. 3 is a plan view of the same, FIG. 4 is an explanatory side view of a body frame portion, and FIG. In the drawing, (1) is an engine, (2) is a transmission case, (3) is a planting case connected to the rear of the transmission case (2) via a transmission pipe (4), and (5) is a planting case. A steering handle connected to the planting case (3) via the handle frame (6), (7) and (7) are left and right swing cases (8) and (8) on the left and right sides of the transmission case (2).
A pair of left and right paddy traveling wheels supported up and down freely via
(9) is a low-back and high-high two-row planting seedling mount that is reciprocally slidably mounted on the upper side of the handle frame (6) via guide rails (10) and (11). Seedling claw which is attached to the planting case (3) via the planting arm (13) to take out one plant seedling from the planting stand (9) and plant it in the field. (14) is a fertilizer tank (14a). A fertilizer feeding case (15), a side groove fertilizer having a fertilizer device (16), etc., and performing fertilization along the seedling planting position inside the planting claw (12). (17) is the engine ( 1) Engine stand (1)
8) and a single planting leveling float supported below the handle frame (6) via a front link (19) and a planting depth adjustment lever (20); (1) a bonnet covering the upper side of the engine fuel tank (22) and the like;
8) A bumper fixed to the front end, (24) a main speed change lever, (25) a recoil lever, (26) a left and right side clutch lever, (27) a planting clutch lever, (2)
8) is a hydraulic lifting lever, (29) is a main clutch lever,
(30) is a seedling collection adjusting lever.

The transmission pipe (4) is disposed in the front-rear direction at the center of the fuselage, and the front end flange (4a) is detachably mounted and fixed to the rear end of the transmission case (2), and the rear end is formed of sheet metal. The T-shaped planting case (3) is fixed to the shaft insertion opening (3a) by welding, and the front end of the handle frame (6) is fixed to the rear surface of the planting case (3) by welding. 4), the planting case (3) and the handle frame (6) are welded together to form a planting claw (1).
It is configured to improve the mounting accuracy between 2) and the seedling mounting table (9).

The transmission pipe (4) comprises two relatively small-diameter left and right pipes (32) (32) having a front end fixed to the upper end of a fixed bracket (31) on the rear side surface of the transmission case (2). The transmission case (2) is extended upward to the base end of the handle frame (6) downwardly after being viewed from the side and fixed to the left and right sides of the frame (6) by welding.
The pipes (4), (32) and (32) are integrally connected to form a triangle in a side view between the steering wheel and the handle frame (6), and the three pipes (4), (32) and (32) are lightweight. This makes the aircraft excellent in bending and torsional rigidity.

As shown in FIG. 5, a transmission shaft (33), which is a PTO shaft of the transmission case (2), is inserted into the transmission pipe (4), and the planting transmission shaft (33) is used for the planting. It drives a planting arm (13) supported on both left and right sides of the case (3). The planting arm (13)
The transmission pipe (4) and the upper left and right pipes (3
2) (32) through the front pivot plate (34) and behind the pivot plate (34) the transmission pipe (4) and the left pipe (3).
And 2) are integrally connected to each other via a rear attachment plate (35), and the right and left pipes (32) and (32) themselves are directly fixed to the handle frame (6) behind the planting arm (13). These pipes (4) (32) (32), the frame (6) and the pivot plate (3)
4) By forming a closed space according to (35),
Displacement prevention of the arm drive shaft (13a) mounting portion of the planting arm (13) (the shaft (13a) mounting portion is displaced with respect to the seedling mounting table (9) due to the uneven load due to the crank motion of the planting arm (13). To stabilize the yield of seedlings.

As shown in FIG. 3, the left and right pipes (32) (3)
2) Front and rear horizontal plates (36a) (36)
b) The horizontal feed chain case (37) is integrally connected on top,
A transverse feed chain (38) is stretched in the chain case (37), and a transverse feed body (39) attached to the chain (38).
6 is engaged with the front side of the seedling mounting table (9).
The seedling table lateral feed screw shaft (40) is provided between the transmission case (2) and the rear attachment plate (35).
The slide (41) to be connected to the seedling table lateral feed screw (40a) of (0) is connected to the lateral feed chain (38), and the screw shaft (40) is output by the transmission case (2).
Is rotated to reciprocate the slider (41) back and forth, so that the traversing body (39) is reciprocated left and right via the chain (38) to traverse the seedling mounting table (9). It is composed.

Further, as shown in FIGS. 6 and 7, an input shaft (42), a traveling speed change shaft (43), and a traveling speed change output shaft (4).
4) A pair of left and right traveling output shafts (45) (45), a stock change shaft (46), and a planting output shaft (47) are provided on the transmission case (2), and an output pulley of the engine (1) is provided. A hydraulic pump (50) and a hydraulic valve (5) are connected to an input pulley (49) connected to the input shaft (42) by a left end and connected to a right end of the input shaft (42).
Hydraulic pump device (5) in which 1) is integrated into the same block
2) is fixed to the right side of the transmission case (2), and the transmission shaft (5) is inserted into the swing case (8).
3) Bevel gear (5) with front end connected to the travel output shaft (45).
4), and the rear end of the transmission shaft (53) is connected to the axle (55) via a bevel gear (56).

Further, as shown in FIGS. 7 and 8, a rearwardly inclined bracket (5) is provided on the rear upper surface of the transmission case (2).
7) A lifting cylinder (58) is attached via the cylinder (58), and the piston rod (6) of the cylinder (58) is mounted on a slider (59) slidably provided on the left and right pipes (32) and (32).
0) The tip is connected and fixed, and the slider (59) is reciprocated back and forth by the cylinder (58) by the guide of the pipe (32), and the cylindrical body (62) through which the rolling shaft (61) is inserted is inserted into the slider (62). 59), a rolling cylinder (64) is attached to the cylinder (62) via a bracket (63), and the piston rod (65) of the cylinder (64) is linked to the rolling shaft (61) by a link (6).
6) and a rolling shaft (6) via a link (67) and a rod (68) and an arm (69).
1) The left and right swing cases (8) and (8) are connected to both ends, and the slider (5) is moved by an elevating cylinder (58).
9) is slid to simultaneously raise or lower the left and right traveling wheels (7) and (7) in the same direction, while rotating the rolling shaft (61) by the rolling cylinder (64) to move one traveling wheel (7). The lower running wheel (7) is raised to tilt the body to the left and right.

Further, bearings (7) are mounted on the engine stand (18).
The pitching sensor arm (71) is mounted via the above (0), and the arm (71) whose tip is brought into contact with the front upper surface of the float (17) is connected to the rotary shaft (72) for lifting operation of the hydraulic device (52). The lift (17) is detected by the arm (71), and the raising / lowering cylinder (58) is automatically controlled to adjust the planting depth of the planting claw (12) so as to keep the planting depth substantially constant. A pendulum-type rolling sensor (74) is provided via a bearing (73) on a right rear portion of the transmission case (2), and the rolling sensor (74) is connected to a rolling operation spool (75) of a hydraulic device (52). The sensor (74) detects the lateral inclination of the machine and automatically controls the rolling cylinder (64) to perform horizontal control for supporting the machine substantially horizontally.

Further, as shown in FIGS. 7, 8, 9 and 10, an engine stand (18) is fixed to the front side of the transmission case (2), and the front of the engine (1) is placed on the upper surface of the engine stand (18). Bolt (1a) is fixed to the transmission case (2), the rear part of the engine (1) is fixed to the front upper surface of the transmission case (2) by a bolt (1b), and the main clutch arm (76) is fixed.
And the left and right side clutch arms (77) and (77) are disposed on the upper surface of the front of the transmission case (2), and the traveling speed change operation shaft (78) is provided in the front-rear direction substantially at the center of the left and right width of the upper part of the transmission case (2) , Inter-stock shift lever (7
9), an inter-stock switching case (80), a seedling platform lateral feed transmission lever (81), and a planting clutch arm (82) are respectively provided on the left and rear of the transmission case (2) provided with the input pulley (49). It is arranged.

Further, as shown in FIG. 10, the input shaft (42) is connected to the traveling speed change shaft (43) via the main clutch (83), and the reverse gear (84) or the first forward gear (85) or The traveling speed change shaft (43) is connected to the traveling speed change output shaft (44) via the forward second speed gear (86) and the traveling speed change gear (87), and the left and right side clutches (88) (8) are connected.
8) The transmission output shaft (44) is connected to the left and right traveling output shafts (45) and (45) via the transmission output shaft (45), and the traveling output shaft (45) is coupled to the input shaft (42) to drive the traveling wheels (7). I do. The traveling speed change shaft (43) is connected to the inter-stock speed change shaft (46) via the first speed gear (85) or the main clutch output gear (89) and the inter-stock speed change gear (90). The inter-shaft transmission shaft (46) is connected to the planting output shaft (47) via the interchangeable inter-stock switching gears (91) (92) and the planting clutch (93) provided inside the plant 80). Safety clutch connected by torque (94)
The planting output shaft (47) is connected to the planting transmission shaft (33) via the shaft and the bevel gear (95), and the seedling table lateral feed gear (96) and the large diameter gear (97) or the small diameter gear (98). The seedling transmission shaft (33) is connected to the seedling table side feed screw shaft (4
0) to drive the planting claw (12) through the planting transmission shaft (33), while driving the planting table (9) laterally through the screw shaft (40). Make up.
In FIG. 9, reference numerals (99) and (100) denote shifter operating shafts for disengaging the clutches (83) and (88), and the clutch arms (76) and (77) are connected to the shafts (99) and (77), respectively. 100).

Further, as shown in FIGS. 1 and 11, an ascending operation wire (101) connected to the hydraulic elevating lever (28) and a descending operation return spring (102) are connected to the hydraulic valve (51). The lifting lever (1
03), and the pitching sensor arm (71) is connected to a valve operating arm (105) via a descending priority spring (104). Link (10
6) to the arm (105) via the rod (107)
The valve (51) is switched upward by pulling the wire (101), the wire (101) is loosened, the valve (51) is switched downward by the spring (102), and the return spring (102) is connected. The arm (105) is brought into contact with the stopper bolt (108) of the sensor arm (71) by the descending priority spring (104) larger than the spring force of the sensor arm (71), the wire (101) is loosened and the sensor is lowered. The arm (71) is raised and lowered by the float (17), and the valve (5) is raised by the rise of the sensor arm (71).
1) is switched to ascending, the valve (51) is switched to descending by lowering the sensor arm (71), and the ascending / descending cylinder ( 58) is operated.

The main clutch arm (7) is connected to the main clutch lever (29) via a clutch wire (109).
6) One end is connected and the transmission case (2)
A lifting control wire (111) is provided on an outer receiving bracket (110) fixed to the upper surface on the right side, and the main clutch arm (76) is connected to the valve operation arm (105) via the lifting control wire (111). The main clutch arm (7) is operated by operating the main clutch lever (29).
When the main clutch (83) is disengaged by operating 6),
The main clutch arm (76) and the lifting control wire (11)
The valve operating arm (105) is supported at the neutral position (or lowered position) via 1). Even if the sensor arm (71) is raised by the float (17), the arm (71)
Is prevented from entering, and the machine is prevented from rising when the main clutch (83) is off.

[0017]

As is apparent from the above embodiment, in the present invention, the main clutch lever (29) is connected to the main clutch arm (76) for engaging and disengaging the main clutch (83) with the wire (10).
9), the main clutch arm (7) is provided in a walking rice transplanter provided with a valve operating arm (105) for operating the elevator cylinder (58) and operating the elevator cylinder (58).
6) is connected to the valve operation arm (105) via a lifting control wire (111). One wire (109) is connected to the main clutch lever (29) to perform operations such as assembly and maintenance. Can be easily performed, and even if there is a defect in the lifting control wire (111), it does not affect the operation of the main clutch (83).
It can be handled safely.

[Brief description of the drawings]

FIG. 1 is a plan view of a transmission case.

FIG. 2 is an overall side view.

FIG. 3 is a plan view of the same.

FIG. 4 is a side view showing an airframe structure.

FIG. 5 is a plan view of the same.

FIG. 6 is a plan view of a traveling drive unit.

FIG. 7 is a side view of the front side of the machine.

FIG. 8 is a plan view of the same.

FIG. 9 is a left side view of the transmission case.

FIG. 10 is a sectional view of the same.

FIG. 11 is a right side view of the same.

[Explanation of symbols]

 (58) Lift cylinder (76) Main clutch arm (83) Main clutch (105) Valve operating arm (109) Clutch wire (111) Lifting control wire

Claims (1)

(57) [Scope of request for utility model registration] 1. A walking rice transplanter in which a main clutch lever is connected to a main clutch arm for engaging and disengaging a main clutch by a wire, and a valve operating arm for elevating and lowering a machine body for operating an elevating cylinder is provided. A walking rice transplanter, wherein the rice transplanter is connected to a valve operating arm through a lifting restriction wire.