JPH05161409A - Walking-type rice transplanter - Google Patents

Abstract

PURPOSE:To provide the subject rice transplanter lowered in the center of gravity and reduced in weight, so designed that a planting transmission shaft and a seedling table traverse screw shaft are installed on a front transmission case and projectedly extended from the back face toward the rear seedling table. CONSTITUTION:A planting transmission shaft 33 and a seedling table traverse screw shaft 40 are installed on a front transmission case 2 and projectedly extended from the back face toward the rear seedling table. Thereby, the transmission shaft 33 can be housed in e.g. the pipe 4 of a machine body frame; the traverse screw shaft 40 can be arranged in an offset manner on either left or right side; and heavy equipment such as a hydraulic cylinder 58 can be installed at lower position (s) on the upper surface side of the transmission case.

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 follows the rear side of the machine to carry out steering operation and the like to continuously perform rice transplanting work.

[0002]

2. Description of the Related Art Conventionally, there has been a technique in which an engine and a mission case are arranged on the front side of the machine, and a seedling stand and a steering handle are arranged on the rear side of the machine.

[0003]

In the prior art, since the seedling table drive system and the like are provided in the planting case on the rear side of the machine, it is difficult to reduce the weight on the rear side of the machine, which is disadvantageous in the front-rear balance. There was a problem.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in a walking rice transplanter having a mission case on the front side of the machine and a seedling stand on the rear side of the machine, a planting transmission shaft and a lateral feed screw for the seedling stand are provided. The shaft is installed in the mission case and extends from the rear to the rear of the machine.The transmission shaft can be housed in the pipe forming the machine frame to ensure safety. In addition to being easy to carry out, the horizontal feed screw shaft can be offset to the left or right to place heavy objects such as hydraulic cylinders at a low position on the top side of the transmission case, improving the running stability with a low center of gravity. Etc. can be easily achieved.

[0005]

Embodiments of the present invention will now be described in detail with reference to the drawings. 1 is a rear view of a main part, FIG. 2 is an overall side view of a two-row planting walking rice transplanter, FIG. 3 is a plan view of the same, FIG. 4 is a side view of a machine frame part, and FIG. 5 is a plan view of the same. In the figure, (1) is an engine, (2) is a transmission case, (3) is a planting case that is connected to the rear of the transmission case (2) via a transmission pipe (4), and (5) is the Steering handles connected to the planted case (3) through the handle frame (6), and (7) and (7) are left and right swing cases (8) and (8) on the left and right sides of the mission case (2).
A pair of left and right paddy wheels, which can be raised and lowered via
(9) is a front row low rear height double row seedling mounting table that is reciprocally slidably attached to the upper side of the handle frame (6) via guide rails (10) and (11), and (12) is the above A seedling planting claw which is attached to the planting case (3) through the planting arm (13) to take out one seedling of one plant from the seedling mount (9) and to plant it in the field, (14) is a fertilizer tank (14a ) -Fertilizer feeding case (15) -Sliding fertilizer applying fertilizer along the inside of the seedling planting position of the planting claw (12), which has a grooving device (16), and (17) is the engine ( 1) Engine stand (1
8) and a single float with a planting flat surface supported by a front link (19) and a planting depth adjusting lever (20) below the handle frame (6), and (21) is the engine (1) and the hood that covers the upper side of the engine fuel tank (22), and (23) is the engine base (1
8) A bumper fixed at the front end, (24) a main shift lever, (25) a recoil lever, (26) a left and right side clutch lever, (27) a planted clutch lever, and (2)
8) is a hydraulic lifting lever, (29) is a main clutch lever,
(30) is a lever for adjusting the amount of seedlings.

The transmission pipe (4) is arranged in the front-rear direction at the center of the machine body, the front end flange portion (4a) is detachably attached and fixed to the rear end of the mission case (2), and the rear end is formed of sheet metal. The T-shaped planted case (3) is fixed to the shaft insertion opening (3a) by welding, and the front end of the handle frame (6) is welded and fixed to the rear side surface of the planted case (3). 4), the planting case (3), and the handle frame (6) are welded as an integrated structure, and the planting claw (1)
2) and the seedling stand (9) are configured to improve the mounting accuracy.

Further, two left and right pipes (32) (32) having a relatively small diameter, the front end side of which is fixed to the upper end of the fixed bracket (31) on the rear side of the transmission case (2), are connected to the transmission pipe (4). The transmission case (2) is extended to the base end portion of the handle frame (6) in a rearward downward direction from above, and welded and fixed to both left and right sides of the frame (6).
The pipes (4) (32) (32) are integrally connected in a state where a side view triangle is formed between the handlebar frame (6) and the handle frame (6), and these three pipes (4) (32) (32) are lightweight. The airframe has excellent bending and torsional rigidity.

As shown in FIG. 6, the planted transmission shaft (33), which is the PTO shaft of the mission case (2), is inserted in the transmission pipe (4), and the planted shaft (33) is used for the planting. The planting arm (13) for supporting the left and right sides of the planting case (3) is driven.
The transmission pipe (4) on the front side and the left and right pipes (3) on the upper side
2) and (32) via the front pivot plate (34), and behind the pivot plate (34) the transmission pipe (4) and the left pipe (3).
2) are integrally connected to each other via a rear pivoting plate (35), and the left and right pipes (32) (32) themselves are directly fixed to the handle frame (6) at the rear side of the planting arm (13). , The pipes (4) (32) (32), the frame (6), and the pivot plate (3) before and after the side view planting arm (13).
4) By forming the closed space by (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 table (9) due to an unbalanced load due to the crank motion of the planting arm (13). It is configured so that the seedling collection amount is stabilized with the aim of preventing

As shown in FIG. 3, the left and right pipes (32) (3
2) Front and rear lateral plates (36a) (36
b) The traverse chain case (37) is integrally connected to the top,
A transverse feed body (39) which is mounted on the chain (38) by tensioning the transverse feed chain (38) in the chain case (37).
6 is engaged with and connected to the front side of the seedling mounting table (9), while FIG.
As described above, the seedling table horizontal feed screw shaft (40) is provided between the mission case (2) and the rear pivot plate (35), and the screw shaft (4
The slider (41) to be coupled to the seedling table horizontal feed screw (40a) of 0) is connected to the horizontal feed chain (38), and the screw shaft (40) is output by the transmission case (2).
When the slider rotates and the slider (41) reciprocates back and forth, the transverse feed body (39) is reciprocated left and right through the chain (38) to laterally feed the seedling table (9). Is configured.

Further, as shown in FIGS. 6 and 7, the input shaft (42), the traveling speed change shaft (43) and the traveling speed change output shaft (4).
4), a pair of left and right traveling output shafts (45) (45), an inter-stock transmission shaft (46), and a planted output shaft (47) are provided in the mission case (2), and the output pulley (1) of the engine (1) ( A hydraulic pump (50) and a hydraulic valve (5) which are connected to the input shaft (42) by a left end of the input shaft (42) and an input pulley (49) connected by a belt to the right end of the input shaft (42).
Hydraulic pump device (5) in which 1) is integrally configured in the same block
2) is fixed to the right side of the mission case (2) and is inserted into the swing case (8).
3) Attach the bevel gear (5) to the traveling output shaft (45) at the front end.
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 mission case (2).
7), an elevating cylinder (58) is attached, and a piston rod (6) of the cylinder (58) is attached to a slider (59) slidably provided on the left and right pipes (32) (32).
0) The tip end is connected and fixed, the slider (59) is reciprocally slid 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), the rolling cylinder (64) is attached to the tubular body (62) via the bracket (63), and the piston rod (65) of the cylinder (64) is linked to the rolling shaft (61) (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) (8) are connected to both ends, and the slider (5
9) is slid to raise or lower the left and right traveling wheels (7) (7) simultaneously in the same direction, while the rolling cylinder (64) rotates the rolling shaft (61) to move one of the traveling wheels (7). The other running wheel (7) is raised and the body is tilted to the left and right.

A bearing (7) is attached to the engine base (18).
0) through which a pitching sensor arm (71) is attached, and the arm (71) whose tip is brought into contact with the upper surface of the front part of the float (17) is connected to the rotary shaft (72) for lifting and lowering operation of the hydraulic device (52). Then, the lifting movement of the float (17) is detected by the arm (71) and the raising and lowering cylinder (58) is automatically controlled to perform the planting depth adjustment for keeping the seedling planting depth of the planting claw (12) substantially constant. A pendulum type rolling sensor (74) is provided on the right rear part of the mission case (2) via a bearing (73), 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 body to automatically control the rolling cylinder (64) to perform horizontal control for supporting the machine body substantially horizontally.

Further, as shown in FIGS. 7, 8, 9 and 10, the engine base (18) is fixed to the front side of the mission case (2), and the front part of the engine (1) is placed on the upper surface of the engine base (18). To the transmission case (2) with the bolt (1a) fastened to the front of the transmission case (2) with the bolt (1a) fastened to the main clutch arm (76).
Also, the left and right side clutch arms (77) (77) are arranged on the upper surface of the front part of the mission case (2), and the traveling speed change operation shaft (78) is provided in the front-rear direction at the approximate center of the left and right width above the mission case (2). , Stock shift lever (7
9), an inter-stock switch case (80), a seedling table horizontal feed speed change lever (81), and a planted clutch arm (82) on the left side of the mission case (2) provided with the input pulley (49), respectively at the rear. It is arranged.

Further, as shown in FIG. 11, the input shaft (42) is connected to the traveling speed change shaft (43) through the main clutch (83), and the reverse gear (84) or the forward first speed gear (85) or The traveling speed change shaft (43) is connected to the traveling speed change output shaft (44) through the second forward gear (86) and the traveling speed change gear (87), and the left and right side clutches (88) (8) are connected.
8) via which the speed change output shaft (44) is connected to the left and right traveling output shafts (45) and (45), and the traveling output shaft (45) is connected to the input shaft (42) to drive the traveling wheels (7). To do. In addition, the traveling speed change shaft (43) is connected to the stock speed change shaft (46) through the first speed gear (85) or the main clutch output side gear (89) and the stock speed change gear (90), and the stock change case ( The inter-plant speed change shaft (46) is connected to the planted output shaft (47) through the inter-plant changeover gears (91) (92) and the planting clutch (93) that are internally interchangeable in the unit 80), and the following or less Torque-engaged safety clutch (94)
The planted output shaft (47) is connected to the planted transmission shaft (33) through a bevel gear (95) and a seedling table lateral feed transmission gear (96) and a large diameter gear (97) or a small diameter gear (98). The planting transmission shaft (33) through the seedling table horizontal feed screw shaft (4
0) to drive the planting claw (12) via the planting transmission shaft (33) and laterally drive the seedling placing table (9) via the screw shaft (40). I am configuring.

As is apparent from the above, the lever (79)
Lever (79) and gear (90) for stock change between push and pull operations, gear (91) (92) Case (80) and gear (91) (9) for stock change between shift operations
2), a lever (81) and a gear (96) for lateral feed shift performed by two-position switching rotation operation of the lever (81), a planted clutch arm (82) and a clutch (93), a safety clutch (94), etc. A planting drive and operation system and a seedling table lateral feed screw shaft (40) are provided in the mission case (2) on the front side of the machine, and the planting of the levers (79) (81) and arms (82) is performed. Operation system and input pulley (4
9) is disposed on the left side surface of the transmission case (2) opposite to the hydraulic pump device (52) to improve maintenance and operability, and reduce the weight of the rear side of the machine to provide a walking type airframe. A frontward rotation moment (a force that opposes the rolling wheel reaction force) that lowers the front side of the machine that is necessary for the structure is secured, and it is possible to reduce the weight of the entire machine body and a hydraulic pump device (52).
Also, hydraulic mechanisms such as the sensor arm (71) and the sensor (74) are collectively arranged on the right side of the mission case (2) on the side opposite to the input pulley (49) to make the periphery of the mission case (2) compact and functional. It is made possible to make the entire machine compact.

Further, the main clutch arm (76) and the side clutch arms (77) (77) are centrally arranged on the front upper side of the mission case (2), and each arm (76) is arranged.
The shifter operation shafts (99) (100) provided with (77) are arranged in front of the shifters of the clutches (83) (88) to improve the balance of the weight of the mission case (2) in the front and rear,
This allows simplification of the clutch wire wiring to be connected to each arm (76) (77).

A planting clutch (93) and a safety clutch (94), which are separately formed, are arranged on the driving side of the planting output bevel gear (95), and the seedling is provided on the driven side of the bevel gear (95). Gears for shifting the platform horizontal feed (9
6) (97) and (98) are provided. The clutches (93) and (94) are provided on the drive side of the bevel gear (95) to place a heavy object in front and to secure a front-rear balance. Since only the gears (96) (97) (98) for switching the lateral feed are provided on the driven side of the bevel gear (95), the lateral feed screw shaft (40) can be positioned closer to the front of the machine. The total length of the shaft (40) and the machine can be shortened.

Further, as shown in FIG. 1, the left and right split joints (101) of the mission case (2) are positioned on the center line in the front-rear direction of the machine, and the planted transmission shaft (33) and the traveling speed change operation shaft ( 78) is provided at the seam (101),
The seedling table horizontal feed screw shaft (40) is offset to the left side, and the lifting cylinder (58) is arranged on the upper surface side of the mission case (2) substantially directly above the seam (101). The transmission shaft (33) and the screw shaft (40) are provided in the mission case (2) to extend from the rear surface toward the rear of the machine, and the transmission shaft (33) is housed in the pipe (4) forming the machine frame. The screw shaft (40) is arranged in an offset manner to lower the overall height of the mission case (2), and an elevating cylinder (58) on the upper surface of the case (2) is provided at a low position to lower the body center of gravity, and the rear side of the machine. It is possible to reduce the weight of the machine by reducing the weight and adjusting the front-rear balance of the machine.

Further, as shown in FIGS. 7 and 9, the outer peripheral shape of the mission case (2) is convex in side view, the engine (1) is provided in the front space of the case (2), and the case (2) is provided. ) A lift cylinder (58) is provided in the rear space,
By effectively utilizing the front and rear space on the upper surface of the case (2) to improve the handling operability by shortening the overall length, improve the front and rear balance by arranging the front of a heavy object, and lower the mounting positions of the engine (1) and the cylinder (58). The center of gravity can be easily lowered.

[0020]

EFFECTS OF THE INVENTION As is apparent from the above embodiments, the present invention provides a planting transmission in a walking rice transplanter having a mission case (2) on the front side of the machine and a seedling table (9) on the rear side of the machine. The shaft (33) and the seedling table horizontal feed screw shaft (40) are provided in the mission case (2) and extended from the rear surface toward the rear of the machine, and the pipe (4) forming the frame of the machine is described above. The transmission shaft (33) can be housed, safety can be easily ensured, and the lateral feed screw shaft (40) can be offset to either the left or right side of the hydraulic cylinder (58) or the like. It is possible to provide a heavy object at a lower position on the upper surface side of the mission case (2), and it is possible to easily improve the running stability by providing a low center of gravity.

[Brief description of drawings]

FIG. 1 is a rear view of a mission 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 side view of the mission case.

FIG. 10 is a plan view of the same.

FIG. 11 is a sectional view of the same.

[Explanation of code] (2) Mission case (9) Seedling table (33) Transmission shaft with plant (40) Seed table horizontal feed screw shaft

Claims (1)

[Claims] 1. In a walking rice transplanter having a mission case on the front side of the machine and a seedling stand on the rear side of the machine, a transmission shaft for planting and a lateral feed screw shaft for the seedling stand are provided on the mission case to form a book from the rear side. A walking rice transplanter characterized by being extended to the rear of the machine.