JPH0548617U - Walking rice transplanter - Google Patents

Abstract

(57) [Summary] (Modified) [Construction] In a walking rice transplanter equipped with a mission case on the front side of this machine and a seedling stand on the rear side of this machine, a planting clutch (93) and a safety clutch (94) are installed. It is provided on the mission case. [Effect] Since the planted clutch (93) and the safety clutch (94) are arranged in the transmission case on the front side of the machine,
The weight on the rear side of the machine can be reduced more easily than before, and the front-rear balance can be improved, and the front-turning moment for lowering the front side of the machine, which is necessary for a walk-behind airframe structure, can be easily secured, and the weight of the machine can be reduced compared to the past. In addition, it is possible to easily improve the stability of the body posture during traveling.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a walking rice transplanter in which a worker follows the rear side of the machine to perform steering operation and the like to continuously perform rice planting work.

[0002]

[Prior Art]

 Conventionally, there has been a technique in which an engine and a transmission 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]

[Problems to be solved by the device]

 In the prior art, since the seedling table horizontal feed screw, the planting shift and the clutch mechanism and the same operation unit are provided in the planting case on the rear side of the machine, the weight on the rear side of the machine can be easily reduced. However, there was a problem that it was not possible to easily obtain the forward moment that lowers the front side of the machine facing the rolling reaction force of the running wheels that raises the front side of the machine.

[0004]

[Means for Solving the Problems]

 However, the present invention is characterized in that, 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 clutch and a safety clutch are provided on the mission case. However, since the planted clutch and safety clutch are installed in the mission case on the front side of the machine, the weight on the rear side of the machine can be reduced more easily than before, and the front-rear balance can be improved. It is possible to easily secure the forward moment required for lowering the front side of the machine, which makes it possible to reduce the weight of the machine and improve the stability of the machine attitude when traveling compared to the conventional model.

[0005]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 is a plan view of a main part, FIG. 2 is an overall side view of a two-row planting walking rice transplanter, FIG. 3 is the same plan view, FIG. 4 is a side view of a machine frame part, and FIG. In the figure, (1) is the engine, (2) is the transmission case, (3) is the planted case that is connected to the rear of the transmission case (2) via the transmission pipe (4), and (5) is Steering handles connected to the planted case (3) via a 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 are supported up and down via the rails (9), are attached to the upper side of the handle frame (6) via guide rails (10) and (11) so as to be slidable left and right. 2 row planting stand for planting, (12) is a planting arm in the planting case (3) (14) is a nail for planting seedlings, which is attached from the seedling mount (9) for one plant and is planted in a field, (14) is a fertilizer tank (14a), a fertilizer feeding case (15), and a crop. A lateral row fertilizer applicator having a groove device (16) and the like for fertilizing along the inner side of the planting position of the planting claw (12), (17) is an engine base (18) of the engine (1) and A single planted field leveling float supported under the handle frame (6) via a front link (19) and a planting depth adjusting lever (20), and (21) is the engine (1). ) And engine bonnet for covering the upper side of the fuel tank (22), (23) a bumper fixed to the front end of the engine stand (18), (24) a main speed change lever, (25) a recoil lever, (26). Left and right side clutch levers, (27) Planted clutch lever (28) is a hydraulic lifting lever (29) the main clutch lever (30) is taking quantity adjustment lever.

The transmission pipe (4) is arranged in the front-rear direction at the center of the machine body, and the flange portion (4a) at the front end is detachably attached and fixed to the rear end of the mission case (2), and the rear end is sheet metal. The T-shaped planting case (3) formed by the above is welded and fixed to the shaft insertion port (3a), and the front end of the handle frame (6) is welded and fixed to the rear side of the planting case (3). The pipe (4), the planting case (3), and the handle frame (6) are integrally welded to improve the mounting accuracy between the planting claw (12) and the seedling table (9).

In addition, two left and right pipes (32) (32) having a relatively small diameter and having a front end side fixed to the upper end of the fixed bracket (31) on the rear side of the mission case (2) are connected to the transmission pipe ( 4) Extend to the rear end of the handle frame (6) from above in a side view and fix it by welding to both left and right sides of the handle frame (6) so that it is between the mission case (2) and the handle frame (6). The pipes (4), (32) and (32) are integrally connected to each other in a state of forming a triangle in a side view, and these three pipes (4), (32) and (32) reduce the weight to improve bending and torsional rigidity. It constitutes an excellent aircraft.

Then, as shown in FIG. 6, the planted transmission shaft (33) which is the PTO shaft of the mission case (2) is inserted into the transmission pipe (4), and the transmission shaft (33) is used to A planting arm (13) supported on both left and right sides of the planting case (3) is driven. The transmission pipe (4) and the left and right pipes (32) (32) (32) on the front side of the planting arm (13). ) With the front pivot plate (34), and the transmission pipe (4) and the left pipe (32) behind the pivot plate (34) are integrated with each other via the rear pivot plate (35). In addition to connecting, 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), and these pipes are provided in front of and behind the side planting arm (13). (4) (32) (32), frame (6), pivot plates (34) (35) To prevent displacement of the arm drive shaft (13a) mounting part of the planting arm (13) (unbalanced load due to crank movement of the planting arm (13) causes the shaft (13a) mounting part to move. It is configured to prevent displacement of the table (9) and stabilize the seedling yield.

As shown in FIG. 3, the transverse feed chain case (37) is integrally connected to the front and rear transverse plates (36a) (36b) provided between the rear ends of the left and right pipes (32) (32), and The lateral feed chain (38) is stretched in the chain case (37), and the lateral feed body (39) attached to the chain (38) is engaged and connected to the front side of the seedling table (9). As shown in 6, the seedling table horizontal feed screw shaft (40) is provided between the mission case (2) and the rear pivoting plate (35), and is coupled to the seedling table horizontal feed screw (40a) of the screw shaft (40). By connecting the slide (41) to the transverse feed chain (38), the screw shaft (40) is rotated by the output from the mission case (2), and the slide (41) reciprocates back and forth. The transverse feed body (39) is reciprocated left and right through the chain (38) to produce seedlings. The platform (9) is configured to be laterally fed.

Further, as shown in FIGS. 6 and 7, the input shaft (42), the traveling speed change shaft (43), the traveling speed change output shaft (44), the pair of left and right traveling output shafts (45) (45), and A transmission shaft (46) and a planted output shaft (47) are provided on the mission case (2), and an input pulley (49) for connecting the output pulley (48) of the engine (1) with a belt is connected to the input shaft (49). 42) A hydraulic pump device (52) in which a hydraulic pump (50) and a hydraulic valve (51) that are pivotally supported at the left end and connected to the right end of the input shaft (42) are integrally configured in the same block is at the right side of the mission case (2). The front end of the transmission shaft (53) which is fixed to the swing case (8) and is inserted into the swing case (8) is connected to the traveling output shaft (45) via a bevel gear (54), and the rear end of the transmission shaft (53) is connected. Bevel gear on axle (55) It is connected through the ears (56).

Further, as shown in FIGS. 7 and 8, an elevating cylinder (58) is attached to a rear upper surface of the mission case (2) through a rearwardly inclined bracket (57), and the left and right pipes (32) are attached. The tip of the piston rod (60) of the cylinder (58) is connected and fixed to a slider (59) slidably mounted on the (32), and the slider (59) is guided by the cylinder (58) by the guide of the pipe (32). ) Is reciprocally slid back and forth, and a cylinder (62) through which the rolling shaft (61) is inserted is fixed to the slider (59), and the cylinder (62) is fitted to the rolling cylinder (64) via the bracket (63). ), The piston rod (65) of the cylinder (64) is connected to the rolling shaft (61) via a link (66), and the link (67) and rod (68) and The left and right swing cases (8) and (8) are connected to both ends of the rolling shaft (61) via the arm (69), and the slider (59) is slid by the lifting cylinder (58) to move the left and right running wheels (7). ) (7) is simultaneously raised or lowered in the same direction, while the rolling cylinder (64) is used to rotate the rolling shaft (61) to lower one traveling wheel (7) and raise the other traveling wheel (7). Is configured to be tilted to the left and right.

Further, a pitching sensor arm (71) is attached to the engine base (18) through a bearing (70), and the arm (71) which abuts the tip on the upper surface of the front part of the float (17) is moved to a hydraulic pressure. The lifting shaft (72) of the device (52) is connected to the arm (71), and the lifting (17) lift is detected by the arm (71) to automatically control the lifting cylinder (58) and the planting claw (12). ) The planting depth is adjusted to keep the seedling planting depth almost constant, and a pendulum type rolling sensor (74) is provided on the right rear part of the mission case (2) via a bearing (73), and a hydraulic system (52) is provided. The rolling sensor (74) is connected to the rolling operation spool (75), and the sensor (74) detects the lateral inclination of the machine to automatically control the rolling cylinder (64) to support the machine substantially horizontally. The horizontal control is performed.

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 attached to the upper surface of the engine base (18). To the transmission case (2) with the bolts (1a) fastened to the front of the transmission case (2) with the bolts (1a) fastened to the main clutch arm (76) and the left and right side clutch arms (77) (77). Is mounted on the front surface of the front of the mission case (2), and travels in the front-rear direction in the center of the left and right width of the upper part of the mission case (2). A gear shift operation shaft (78) is provided, and a stock shift lever (79) and a stock switch case are provided. (80), the seedling platform lateral feed speed change lever (81), and the planted clutch arm (82) on the left side of the mission case (2) provided with the input pulley (49) respectively at the rear part. It is arranged.

Further, as shown in FIG. 1, 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 first forward speed gear (85) is connected. ) Alternatively, the traveling speed change shaft (43) is connected to the traveling speed change output shaft (44) through the second forward speed gear (86) and the traveling speed change gear (87), and the speed is changed through the left and right side clutches (88) (88). The output shaft (44) is connected to the left and right traveling output shafts (45) (45), and the traveling output shaft (45) is connected to the input shaft (42) to drive the traveling wheels (7). 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 speed changeover is performed. The inter-plant speed change shaft (46) is connected to the planted output shaft (47) through the inter-stock switching gears (91) (92) and the planting clutch (93) which are internally interchangeable in the case (80), The planted output shaft (47) is connected to the planted transmission shaft (33) through a safety clutch (94) and a bevel gear (95) which are connected with the following torque, and is connected to the seedling table lateral feed speed change gear (96). The planted transmission shaft (33) is connected to the seedling table horizontal feed screw shaft (40) through the radial gear (97) or the small diameter gear (98), and the planted pawl is provided through the planted transmission shaft (33). While driving (12), the seedling mounting table (9) is passed through the screw shaft (40). Is configured to be driven laterally.

As is apparent from the above, the lever (79) and the gear (90) and the gears (91) (92) for the inter-stock shifting performed by the lever (79) pushing and pulling operation are used for the inter-stock switching. The case (80), the gears (91) and (92), the lever (81) and the gear (96) for the lateral feed speed change performed by the two-position switching rotation operation of the lever (81), the planted clutch arm (82) and A planting drive and operation system such as a clutch (93) and a safety clutch (94), and a seedling table horizontal feed screw shaft (40) are provided in the mission case (2) on the front side of the machine, and the lever is provided. The planting operation system such as (79), (81) and the arm (82) and the input pulley (49) are arranged on the left side surface of the mission case (2) opposite to the hydraulic pump device (52). And improve operability. The weight of the entire machine body is reduced by reducing the weight on the rear side of the machine and securing the previous moment (force that opposes the rolling wheel reaction force) that lowers the front side of the machine, which is necessary for a walk-behind airframe structure. At the same time, the hydraulic mechanisms such as the hydraulic pump device (52), the sensor arm (71), and the sensor (74) are collectively arranged on the right side of the mission case (2) opposite to the input pulley (49). ) The peripherals are made compact and functionally configured, making it possible to make the entire unit compact.

Further, the main clutch arm (76) and the side clutch arms (77) (77) are centrally arranged on the upper front side of the transmission case (2), and the shifters provided with the respective arms (76) (77). A clutch wire for arranging the operation shafts (99) (100) on the front side of the shifters of the clutches (83) (88) so that the weight of the transmission case (2) is well balanced in the front-rear direction and connected to the arms (76) (77). Wiring can be simplified.

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 on the driven side of the bevel gear (95). The gears (96) (97) (98) for lateral feed shifting of the seedling mounting table are arranged, and each of the clutches (93) (94) is installed on the drive side of the bevel gear (95) to load heavy objects. Since it is arranged in the front to secure the front-rear balance, and 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 located closer to the front of the machine, and the shaft (40) and the overall length of the machine can be shortened.

[0018]

[Effect of the device]

 As is apparent from the above embodiments, the present invention is a walking rice transplanter in which the mission case (2) is provided on the front side of the machine and the seedling table (9) is provided on the rear side of the machine. Since the clutch (94) is provided in the mission case (2) and the planting clutch (93) and the safety clutch (94) are arranged in the mission case (2) on the front side of the machine, the weight of the rear side of the machine is reduced. Can be reduced more easily than before and the front and rear balance can be improved, and the front-turning moment for lowering the front side of the machine, which is necessary for a walk-behind airframe structure, can be easily secured. It is possible to easily improve the stability of the aircraft attitude.

[Brief description of drawings]

FIG. 1 is a cross-sectional 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.

[Explanation of symbols]

 (2) Mission case (9) Seedling table (93) Clutch with planting (94) Safety clutch

Claims (1)

[Scope of utility model registration request] 1. 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, wherein a planting clutch and a safety clutch are provided on the mission case. ..