JP2001238509A - Riding type rice transplanting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a riding type rice transplanting machine that can be operated by the operator with the lever for letting in the clutch, disengaging the clutch, and stopping the machine body from the ground, getting off the machine body, without obstruction of the standby seedling stand. SOLUTION: In a riding type rice transplanting machine in which the planting unit is liftably arranged in the rear of the machine body, the main clutch lever that can let in the clutch and can disengage the clutch is arranged in the vicinity of the main clutch pedal set on the left side in the plain view to the machine body-advancing direction. When the operator operates the main clutch lever from the ground, getting off from the machine body, the standby seedling stand is made rotatable so that the side way of the operation range of the main clutch may be opened in the plane view.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spare seedling mounting table for a rice transplanter.

[0002]

2. Description of the Related Art Conventionally, for example, a riding rice transplanter disclosed in Japanese Patent Application No. 10-133121 filed by the applicant of the present invention is capable of engaging and disengaging a clutch and stopping the machine body. An operation lever that cuts off power transmission to the pulley and applies a brake to the rotation of the driven pulley is disposed on the left front side as viewed from the operator sitting in the driver's seat. Then, when entering / leaving a field, loading / unloading a transport vehicle, or crossing a ridge, etc., the operator gets off the aircraft and operates the operation lever from one side of the aircraft to move the aircraft or cross the ridge. Or let me do it.

[0003]

However, at this time, since the spare seedling mounting table is provided on both sides of the bonnet in front of the operation lever, when the operator gets down from the body and operates the operation lever, the spare seedling mount is required. Seedling platform may interfere with operation. Therefore, the present invention provides a
An object of the present invention is to provide a riding rice transplanter capable of keeping a spare seedling mounting table out of the way when operating an operation lever capable of cutting and stopping a machine from the machine.

[0004]

In order to achieve the above object, the present invention provides the following riding rice transplanter. That is, in a riding rice transplanter in which the planting portion is arranged at the rear of the machine so as to be able to move up and down, the clutch can be "on" and "off" in the vicinity of the main clutch pedal which is arranged on the left side in plan view in the machine traveling direction. The main clutch lever is arranged, and when the operator operates the main clutch lever by descending from the fuselage, the spare seedling mounting table is rotated so that the side of the operation range of the main clutch lever is opened in plan view. It is characterized in that it is configured to be possible.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below based on examples shown in the drawings. FIG. 1 is a schematic side view showing an entire riding rice transplanter (A) according to the present invention. The riding rice transplanter (A) includes a traveling vehicle (1) and a planting section (9) connected to a rear portion of the traveling vehicle (1). As shown in FIG. A front wheel (2) and a rear wheel (3) are suspended at a front portion and a rear portion, respectively, and an engine (5) as a power unit is mounted on a front portion of the body frame (4). A transmission case (6) extending long in the front-rear direction is disposed substantially at the left and right center of the body frame (4) behind the engine (5), and a front wheel (2) is provided at the front of the transmission case (6). The rear wheel (3) is supported at the rear. Spare seedling mounts (90) are provided on both sides of the hood (22) covering the engine (5), and a transmission case (6) and the like are covered by a body cover (20) on which an operator rides. And
A driver's seat (7) is provided in the upper rear part of the vehicle body cover (20), and a steering handle (8) is provided behind the hood (22) in front of the vehicle body cover (20).

[0006] A body cover (20) is provided on the body frame (4).
As shown by, the hood (22) and the substep (2)
3) A front cover (21) integrally formed by blow molding with a synthetic resin, an installation portion (31) of a driver's seat (7) on which an operator rides, and a main step (32) to assist in getting on and off the vehicle. The step (33) is composed of a rear cover (30) integrally formed by blow molding with a synthetic resin to facilitate manufacture and assembly.
The cost is reduced by reducing the number of parts. In addition, (75) is a main transmission lever, (76) is a main clutch lever, (77) is a planting elevating lever, (73) is a brake pedal, and (74) is a main clutch pedal.

The rear cover (30) is provided on the body frame (4).
And the rear side is bulged upward and rearward from the main step (32) to form an installation portion (31) of the driver's seat (7). The front cover (21) has a central bonnet (22) on which the engine (5) is mounted, and sub-portions provided on both sides of the bonnet (22) for passage to the spare seedling mounting table (90). Step (23) is provided. The front cover (21) is separated from the rear cover (30) at the pedal portion. The front cover (21) can be attached and detached by sliding the vehicle body frame (4) from the front in the front-rear horizontal direction. Is configured.

As shown in FIG. 1, a flat supporting member (50) extends rearward and downward from a central portion of the front frame (40), and a front portion of the supporting member (50) is provided. It is formed so as to curve upward toward the front frame (40). The support member (5)
The engine (5) is mounted on the (0), but since the support member (50) is flat, it can be used as a protective cover under the engine (5). It is designed to be downed.

The transmission case (6) is fixed to the vehicle body frame (4) formed at the front low, rear high, and near the front, the rear, and the middle of the body frame (4). In the vicinity, a mounting member (51) that extends from the support member (50) obliquely inward and downward toward the support member (50) on which the engine (5) is mounted.
Has been fixed through. Further, the rear portion is longer in the front-rear direction from substantially lower center in the front-rear direction of the body frame (4) to the rear lower portion of the rear end portion of the body frame (4) so that the rear portion is separated from the lower surface of the main step (32). It is formed so as to extend, and is arranged at a front height and a rear low in a side view shown in FIG.

Therefore, a PTO having a universal joint (159) connected to the PTO shaft (65)
The space through which the transmission shaft (158) passes can be widened, and the universal joint (159) and PT
The O transmission shaft (158) and the like can be arranged with a margin. The support member (1) supporting the PTO transmission shaft (158) is provided on the upper surface of the transmission case (6).
60) are provided, and both ends of the PTO transmission shaft (158) are supported by the same transmission case (6), so that the concentric accuracy can be easily increased.

A transmission chamber (60) in which a traveling transmission mechanism is provided is formed at the front of the transmission case (6).
A front axle case (37) is integrally fixed to both left and right side surfaces of the shift chamber (60). The axle case is fixed downward from the left and right ends of the front axle case (37), and a front wheel axle (66) for fixing the front wheel (2) is supported at the lower end of the axle case. .
On the other hand, a cylindrical rear axle case (38) having a shaft center in the left-right direction is integrally formed at the rear end of the transmission case (6), and a rear wheel drive shaft (69) is provided in the rear axle case (38). ) Is supported. The rear wheel (3) is fixed to both left and right ends of the rear wheel drive shaft (69), so that the conventional transmission case is eliminated.

The planting section (9) has a four-row seedling mounting table (9).
1) and a plurality of planting claws (93) and the like.
And a guide rail (96) to allow the planting transmission frame (92) to reciprocate slidably to the left and right, and a planting claw (93) that is cranked by a crank mechanism is provided at the rear of the planting transmission frame (92). It is arranged. Therefore, the front wheel (2) and the rear wheel (3) are driven and moved, and the seedling table (91) is slidable left and right.
, A seedling of one strain is taken out with a planting claw (93) so that the seedling can be continuously planted.

A hitch (94) is provided at a front portion of the planting transmission frame (92) via a rolling fulcrum shaft (16), and the hitch (94) is provided on the upper left and right sides of the hitch (94). A pivoted top link (11);
The hitch (94) is connected to the rear of the traveling vehicle (1) via a lifting link mechanism (10) including a lower link (12) pivotally supported on both left and right sides of a lower portion of the hitch (94). A base of a lift arm (13) is fixed to the inner surface of the front end of the lower link (12), and the lift arm (13) is moved upward in a direction perpendicular to the direction in which the lower link (12) is arranged. It protrudes. An elevating cylinder (15) for driving the elevating link mechanism (10) to elevate and lower is connected to the lift arm (1) connected to the lower link (12).
3).

A reinforcing link (1) is provided between the upper end of the lift arm (13) and the rear end of the lower link (12).
4) are connected to increase the rigidity of the lower link (12). And the top link (11)
The front end of the lower link (12) is pivotally supported via a pivot pin provided between the rear connecting frames (44), and the rear connecting frame (44) is connected to the lifting link mechanism (10). It is also used as a support part, and stably moves up and down the planting part (9), reduces the number of parts, and simplifies the configuration.

A leveling center float (97) and side floats (98) for keeping the planting portion (9) at a constant height are provided below the planting portion (9). The center float (97) is arranged on the left and right center lines of the traveling vehicle (1), and the side floats (98) are arranged at symmetrical positions of the center float (97). The balance is kept good, the planting posture is stabilized, and the planting can be performed accurately.

A planting depth adjusting shaft (16) is provided below a planting transmission frame (92), which is a power transmitting unit of the planting unit (9).
1) is laid laterally in accordance with the width of the left and right side floats (98), and the support arm (16) is directed toward the rear of each float below the proper position of the planting depth adjusting shaft (161).
2) is protruded and pivotally supported on the rear of each float, and the operation arm (16) is provided forward of the planting depth adjusting shaft (161).
3) is protruded, and a planting depth setting lever (79) is provided upward from the rear end of the operation arm (163). Therefore, the operator can easily operate the planting depth setting lever (79) while sitting in the driver's seat (7), and can easily adjust the setting.

As shown in FIG. 9, an input shaft (56) is supported on the upper part of the transmission chamber (60) of the transmission case (6) in the left-right direction, and the left end of the input shaft (56) is connected to the input shaft (56). The driven pulley (55) is fixed to the outside of the engine, and the output shaft (5) is laterally projected from the left side of the engine (5).
The power from the drive pulley (53) fixed to 2) is
It is input into the transmission case (6) via the belt (54). The belt (54) is configured to be tensioned by a tension roller (58) attached to the tip of a tension arm (57). Power connection / disconnection is performed in conjunction with the shift operation of (76).

In the vicinity of the main clutch pedal (74) disposed on the left side in the body traveling direction, the clutch is "
A main clutch lever (76) that can be turned off is provided, and a main clutch pedal (74) and a main clutch lever (7) are provided.
By the operation of 6), the tension of the belt (54) for transmitting power from the engine (5) to the inside of the transmission case (6) can be set to the "OFF" state. And, in those operation systems, an accommodation mechanism is provided so that even if one operation tool is operated, the other operation tool is not affected. For example, as shown in a side view of FIG. 9, the accommodation mechanism is connected to an interlocking rod (140) pivotally supported by a bracket (142) provided on a pivot (141) of the main clutch lever (76). It is constructed by drilling a long hole (140a).
A fitting member (143) such as a pin protruding from the tension arm (57) to be "cut" is inserted through the elongated hole (140a).

Therefore, when the main clutch lever (76) is rotated rearward in the direction of the arrow shown in the figure, the interlocking rod (140) moves downward, and the elongated hole (140) is moved.
The tension arm (57) is rotated downward via the insertion member (143) inserted through the tension roller (5) attached to the tension arm (57).
8) is separated from the belt (54) to bring the belt tension into the "off" state. On the other hand, when the main clutch pedal (74) is depressed, as shown in FIG. 10, an L-shaped bracket (1) fixed to the pedal support (74a) is provided.
44) A pressing member (145) such as a pin attached to
Presses the cam (146) fixed to the rotation shaft (59) of the tension arm (57) to push the tension arm (5).
7) is rotated downward, whereby the belt tension is set to the "off" state.

Therefore, even if the main clutch pedal (74) is depressed, the fitting member (14) of the tension arm (57) is inserted.
3) has a long hole (140) formed in the interlocking rod (140).
It is needless to say that the main clutch lever (76) does not have any effect just by moving in (a), and the main clutch lever (76) does not affect the main clutch pedal (74). In any case, the main clutch lever (7) is a manual operation tool that performs the same operation to stop all power.
6) and 2 of the main clutch pedal (74), which is a foot movement operating tool.
Since it is equipped with one, it is possible to operate them while riding or getting off the aircraft, and since it is a lever which is a manual operation tool and a pedal which is a foot operation tool, it is possible to identify and operate both It is easy and there is no erroneous operation.

As shown in FIGS. 9 and 10, a brake member (147) for stopping rotation of the driven pulley (55) on the transmission case (6) side is fixed to the tension arm (57). This brake member (14
7) is configured to press the driven pulley (55) by rotating the tension arm (57) downward. The pressing portion of the brake member (147) is formed of an elastic body (149) such as rubber urged toward the driven pulley (55) by a spring (148) or the like, and is configured to be able to retreat from the pressing side. Have been. As described above, when the elastic body (149) of the brake member (147) presses the driven pulley (55) to stop the rotation and apply the brake to the entire body, the traveling vehicle (1) can be driven even on a slope. Being able to stop it becomes safe.

The brake member (147) operates only when the belt tension is turned off by operating the main clutch lever (76), and the main clutch lever (76) stops the machine. It is something that can be done. That is, when the main clutch pedal (74) is depressed, the rotation range of the tension arm (57) when each operating tool is used is taken into consideration so that the brake member (147) is in an inactive state. In this case, the brake member (147) does not act even when the main clutch pedal (74) is depressed, thereby preventing the aircraft from suddenly stopping. Also, the elastic member (149) of the brake member (147)
Is retractable by the spring (148),
Even if the main clutch lever (76) is operated, it does not stop suddenly and is safe. Further, the elastic body (149) is configured to be replaceable in case of wear, so that maintenance can be easily performed.

In the rice transplanter as described above, the spare seedling mounting table (90) is provided on the holding portion (28) provided on both side ends of the front frame (40) via the stays (29), and the supporting columns (89). ) Is provided by inserting
As shown in FIG. 2, when the main clutch lever (76) is located forward, the rear end of the spare seedling mounting table (90) does not overlap with the main clutch lever (76) in plan view. As shown in FIG. 3, the operation range of the main clutch lever (76), that is, the main clutch lever (7
When 6) is located in front, the spare seedling mounting table (90)
Of the main clutch lever (76) so as not to overlap with the main clutch lever (76) in side view. Therefore, when the operator gets off the machine and operates the main clutch lever (76) from the side, such as when entering / leaving a field, loading / unloading a transport vehicle, or crossing a ridge, the spare seedling mounting table (90) is The operation can be suitably performed without disturbing the operation. In addition, as shown in FIG. 4, the spare seedling mounting table (90) can be turned by 180 degrees by removing the column (89) from the holding section (28), so that compactness at the time of storage can be achieved. It can be planned.

As shown in FIGS. 5 and 6, the same effect can be obtained even if the spare seedling mounting table (90) is configured to be pivotable. The one shown in FIG. 5 is configured so that the spare seedling mounting table (90) rotates around the holding part (28) in the direction of the arrow shown in the drawing. Specifically, for example, as shown in FIG. The holding portion (28) is formed as a hollow cylindrical tube, and a through hole (28a) is formed at one location in the middle thereof, and is slidably supported by a stay (87) attached to the holding portion (28). A fitting member (85) such as a pin urged toward the center of the holding portion (28) in (86) can be fitted into the through hole (28a), while the strut (89) can be fitted into the holding portion (28). With a cylindrical tube of such a diameter, a locking hole (89
a), a plurality of holes, preferably at least three, are drilled, and when the support post (89) is inserted into the holding portion (28), the tip of the insertion member (85) penetrating through the through hole (28a) is locked. 89a), so that the spare seedling mounting table (90) can be fixed at a desired position.

FIG. 5 (a) shows a posture during a normal planting operation, and FIG. 5 (b) shows a posture when an operator gets off the machine and operates the main clutch lever (76) from the side. FIG. 5C shows the posture at the time of storage. The spare seedling mounting table (90) is position-fixed in at least three places as described above, and the posture can be changed. As shown in FIG. 5 (b), one of them is the main clutch lever in plan view. It is fixed in a state rotated about 90 degrees so that the side of the operation range of (76) is open. Therefore, in the same manner as described above, when the operator gets off the aircraft and operates the main clutch lever (76) from the side, such as when entering / leaving a field, loading / unloading a transport vehicle, or crossing a ridge, a spare seedling mounting table is provided. (90) does not hinder the operation, and can be suitably operated. When the support (89) is inserted into the holding portion (28) or when the spare seedling mounting table (90) is rotated, the insertion member (85) is pulled against the spring (86), and the locking hole is formed. This is performed after the tip of the fitting member (85) is removed from (89a).

On the other hand, the one shown in FIG.
And a holding portion (28) serving as a rotation fulcrum is disposed substantially in the center rear of the spare seedling mounting table (90) at the time of planting operation in plan view, and FIG. ) Shows the posture at the time of the planting operation, FIG. 6B shows the posture when the operator gets off the body and operates the main clutch lever (76) from the side, and FIG. 6C shows the posture at the time of storage. The posture is shown. In addition, (88) represents the position of the holding part (28) which becomes a pivot point. The spare seedling mounting table (90) can be changed in posture while being fixed in at least three places as described above. As shown in FIG. 6 (b), one of the spare seedling mounting stands (90) is the main clutch lever in plan view. The hood (22) on the (76) side is fixed in a state of being rotated by about 90 degrees so that the side of the hood (22) is open. Therefore, when the operator gets off the machine and operates the main clutch lever (76) from the side, such as when entering / leaving a field, loading / unloading a transport vehicle, or crossing a ridge,
The operation can be performed from the sub-step (23) side, and the spare seedling mounting table (90) can be suitably operated without obstructing the operation of the main clutch lever (76), as described above. . The structure for rotating the spare seedling mounting table (90) so as to be fixed at a predetermined position may be the same as that shown in FIG.

In any case, if the spare seedling mounting table (90) is of such a rotating type, the seedling transfer from the spare seedling mounting table (90) to the seedling mounting table (91) can be performed easily. Also when the main clutch lever (76) is operated after getting off the body, the spare seedling mounting table (90) does not become a hindrance, and the whole size can be reduced during storage. In addition, reference numerals (81) and (82) shown in FIGS. 2 to 4 denote gripping members that allow the user to grip the aircraft when operating down the aircraft and operating the main clutch lever (76) or the like. Front wheel axle (66)
Column (8) of the preliminary seedling mounting table (90)
9) and the front frame (40). When the gripping members (81) and (82) are provided at such positions, the direction of the fuselage can be easily changed with the rear wheel (3) as a fulcrum, and unbalance of the fuselage such as head-up can be easily corrected. can do. In particular, as shown in FIG. 2, a gripping member (8) is provided in front of the front frame (40).
Provision of 1) makes it easy to operate the main shift lever (75) and the main clutch lever (76) because they are close to the main shift lever (75), the main clutch lever (76), and the like, and can cope safely in an emergency. Further, the gripping member (82) is protruded from the support (89) in the longitudinal direction of the machine as shown in FIG. 3 or in the lateral direction of the machine as shown in FIG. 4, but the combination thereof is arbitrary. .
Further, the shapes of the gripping members (81) and (82) are shown in FIGS.
8A is not limited to the substantially U-shape shown in FIG.
The shape may be a substantially L-shape as shown in FIG. 8 or a rod shape as shown in FIG.

[0028]

According to the present invention, the main clutch lever for turning on / off the clutch is disposed near the main clutch pedal disposed on the left side in plan view in the direction of travel of the vehicle. It is possible to operate the main clutch pedal and main clutch lever while riding on or off the vehicle, and it is easy to identify and operate both the manual operation device and the foot operation device, resulting in incorrect operation. There is no. Also, when the operator operates the main clutch lever by descending from the fuselage, the spare seedling mounting table is configured to be rotatable so that the side of the operation range of the main clutch lever is opened in a plan view. Getting in and out of fields and loading and unloading vehicles
Alternatively, when the operator gets off the fuselage and operates the main clutch from the side, for example, when crossing a ridge, the spare seedling mounting table can be suitably operated without disturbing the operation.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a riding rice transplanter.

FIG. 2 is a schematic plan view of a traveling vehicle.

FIG. 3 is a schematic side view of a front portion of a traveling vehicle.

FIG. 4 is a schematic front view of a traveling vehicle.

FIG. 5 is a schematic plan view of a front portion of a traveling vehicle, showing a rotating-type spare seedling mounting table.

FIG. 6 is a schematic plan view of a front portion of a traveling vehicle, showing a rotating-type spare seedling mounting table.

FIG. 7 is an explanatory view showing a means for rotating the rotating auxiliary seedling mounting table so that the position can be fixed.

FIG. 8 is a schematic side view of a front portion of a traveling vehicle.

FIG. 9 is a schematic side view showing a mechanism for transmitting power from an engine to a transmission case.

FIG. 10 is a schematic plan view showing a mechanism for transmitting power from an engine to a transmission case.

[Explanation of symbols]

 22 Bonnet 23 Sub-step 28 Holder 29 Stay 76 Main clutch lever 85 Insertion member 86 Spring 87 Stay 89 Support post 90 Spare seedling mounting table

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B62D 49/00 B62D 49/00 D G05G 1/24 G05G 1/24 Z

Claims (1)

[Claims] 1. In a riding rice transplanter having a planting portion disposed at the rear of the body so as to be able to move up and down, a clutch is set to “on” or “off” in the vicinity of a main clutch pedal disposed on the left side in a plan view in the body traveling direction. And when the operator operates the main clutch lever by descending from the fuselage, the spare seedling mounting table is positioned in a state where the side of the operation range of the main clutch lever is opened in a plan view. A rice transplanter characterized by being rotatable as described above.