JPH0713450Y2 - Rice transplanter - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Use The present invention relates to a rice transplanter for riding.

(B) Conventional Technology Conventionally, a passenger rice transplanter has a planting section connected to the rear of a traveling section that is capable of self-propelling via an elevating mechanism.

Then, a rolling shaft whose axis is oriented in the front-back direction of the planting part is provided on the front wall of the transmission case of the planting part, and the front end of the rolling shaft is swung on the rolling bearing part provided at the rear end of the lifting mechanism. It is pivotally supported and can be rolled freely with respect to the lifting mechanism that has the planting part integrally attached to the running part.

Moreover, at the rear end of the lifting mechanism, a spring support shaft is laterally slidable in the left-right width direction, and a pair of left and right rolling regulation springs are wound around the outer peripheral surfaces of the left and right side parts of the spring support shaft. The spring support shaft can be laterally slid by the elastic biasing force of both springs.
Rolling regulation of the planting part centering on the same rolling axis can be performed.

In this way, the planting section always keeps a horizontal posture so that the planting depth is constant even when the traveling section is tilted to the left or right due to the unevenness of the tiller.

(C) Problems to be solved by the device However, when the unevenness of the tiller is severe and the running part is greatly tilted to the left or right, the load difference acting on the left and right rolling train springs becomes large, and the two springs ensure a reliable operation. There was a problem that rolling regulation could not be performed and the planting depth could not be made uniform.

Further, in order to solve the above-mentioned problem, it was considered that the rolling regulation spring could be pulled manually or by the power of a hydraulic cylinder to change the urging force of the spring as appropriate, but the urging force was changed. The load that is already applied to the rolling regulation spring depends on where the seedling stand is moving laterally, or on which row of the seedling mat is placed on the seedling stand. , The rolling regulation of the planting part was not yet done.

(D) Means for Solving the Problem In the present invention, therefore, the planting part is connected to the rear of the traveling part that can be self-propelled through the elevating mechanism, and the axis line is attached to the front wall of the transmission case of the planting part. A rolling shaft oriented in the front-rear direction of the planting part is provided, and the front end of the rolling shaft is swingably supported by a rolling bearing part provided at the rear end of the lifting mechanism so that the planting part can be used as a running part. In the riding rice transplanter that can be rolled freely, a rolling control mechanism for controlling the rolling of the planting section is provided between the rear end of the lifting mechanism and the front end of the transmission case of the planting section. The rolling control mechanism consists of a rolling control motor arranged offset to the left or right from the center line in the front-rear direction, a speed reducer linked to the motor, and a base end linked to the speed reducer. Extend in the left-right direction and install at the tip. An operating rod in which a screw part is screwed into a screwing part provided on the side of the planting part, and an inclination sensor that drives the rolling control motor based on the detection result of the lateral inclination angle of the planting part with respect to the planting surface. The present invention is intended to provide a riding rice transplanter characterized by comprising:

(E) Action / Effect In the present invention, as described above, the rolling control mechanism is provided between the rear end of the lifting mechanism and the front wall of the transmission case, and the rolling control is performed as a drive source of the rolling control mechanism. A motor is used, and by rotating the operating rod forward and backward by the motor, the rolling control of the planting part can be performed.Thus, such rolling control can be performed smoothly and the planting accuracy can be improved. It can be secured well.

Moreover, the rolling control motor and the speed reducer are arranged to be offset to the left or right from the center line in the front-rear direction, and the tip of the operating rod whose base end is interlockingly connected to the speed reducer is extended to the left and right walks. Since the screw part provided on the part is screwed to the screw part provided on the planting part side, the elevating mechanism and the planting part can be arranged as close as possible, and the front and rear of the machine body can be arranged. The width can be shortened.

Therefore, the turning radius of the machine body is reduced, the steerability is improved, and the storage space of the machine body can be reduced.

(F) Embodiments An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 (A) shows a riding rice transplanter according to the present invention, which is installed behind a freely movable traveling part (1). The attachment part (8) is connected via a lifting mechanism (9) and a hitch mechanism (10).

Then, the traveling section (1) has a prime mover section (7) mounted on the front part of the body frame (2) and a seat (5) arranged on the rear part thereof.
There is a handle (6) just in front of the seat (5),
Front and rear wheels (3) and (4) are attached to the lower front and rear portions of the body frame (2), respectively. (16) is a lifting hydraulic cylinder provided between the machine frame (2) and the lifting mechanism (9), and (38) is a planting surface.

Further, the planting section (8) is rearwardly planted to the transmission case (11) which is interlockingly connected to the prime mover section (7) of the traveling section (1) through an interlocking mechanism (not shown). ) Is installed, the seedling planting mechanism (12) is attached to the rear end of the case with seedlings (13), and the seedling mount (15) is placed on the case with seedlings (13) in the front and rear directions. It is installed in an inclined state, and the float (14) is attached below the planted case (13).

Further, as shown in FIGS. 1 to 3, the lifting mechanism (9) has a single top link (17) and a pair of left and right lower links (18) (at the rear end of the body frame (2). The front ends of 18) are vertically rotatably connected, and the rear ends of the top links (17) are attached to the upper pins (20) that are laid across the upper parts of the pair of left and right joint plates (19) (19 '). At the same time, the rear ends of the left and right lower links (18) and (18) are attached to the lower pin (21) that is bridged between the lower portions of the joint plates (19) and (19 ').

Then, upper and lower hitch pins (22) and (23) are laterally provided between the upper rear portion and the lower rear portion of the joint plates (19) and (19 '), and the hitch pins (22) and (23) are connected to the hitch mechanism. (Ten)
Is detachably connected.

Further, the hitch mechanism (10) is provided with right and left side walls (26a) (26
a) and the rear wall (26b) make a hitch body (2
6) is formed, and the rolling bearing portion (27) having the axis directed forward and upward is attached to the boss portion (26'b) provided on the rear wall (26b) of the hitch body (26). Insert the front part (28a) of the rolling shaft (28) into the (27) rolling bearing (2
7) The shaft is swingably supported around the axis of 7), and the same rolling shaft (2
8) Attach the rolling shaft support plate (29) to the rear end (28b) in parallel with the rear wall (26b), and project the rolling shaft support plate (29) to the front wall of the transmission case (11). It is fixed to the stay (30) provided with bolts (31).

(32) is provided on the front upper part of the left and right side walls (26a) (26a) and is a downward hook part that is hooked on the upper hitch pin (22),
(33) is provided in the front lower portion of the left and right side walls (26a) (26a), and the lower hitch pin (23) is fitted in the recessed portion, and (34) is provided between the left and right side walls (26a) (26a), and the recessed portion (33 ) Engaging the lower hitch pin (23) with a hook lever (3
5) is a hook lever support shaft, and (36) is a lever handle for rotating the hook lever (34) by attaching the base end to the hook lever support shaft (35).

In the above structure, the gist of the present invention is to provide the hitch mechanism (10) with a rolling control mechanism (40) for controlling the rolling of the planting part (8). Also, description will be made with reference to FIG.

That is, the rolling control mechanism (40) has a rectangular plate-shaped rolling control rocking body (41) on the outer peripheral surface of the boss (26'b) provided on the rear wall (26b) of the hitch body (26). A fitting hole (41a) provided in the central portion is swingably mounted coaxially with the rolling shaft (28) via a bearing (42).

Then, from the rear surface of the rolling control rocking body (41), a pair of left and right brackets (4
3) Extend (43 ') rearward and attach both brackets (43) (4
Support shaft insertion holes (43a) (4a)
3′a), the spring support shaft (44) is penetrated in a transversely and laterally slidable manner, and the spring support shaft (44) is laterally slidably attached to the outer peripheral surfaces of the left and right overhanging parts (44a) (44b). A pair of rolling regulation springs (45) (45 ') are wound and attached, and the left and right ends of each spring (45) (45') are respectively provided at the left and right outer ends of the spring support shaft (44). 46) (46 ') and left and right brackets (43)
(43 ') and is supported by. (47) and (47 ') are inner spring receivers.

Moreover, the pin fitting portion (48) is projected rearward at the center of the spring support shaft (44), and the pin fitting portion (48)
Further, a coupling fitting pin (49) projecting forward from the upper portion of the rolling shaft support plate (29) is swingably fitted around the axis.

With this configuration, the rolling control rocking body (41) and the rolling shaft (28) integrally rock about the same axis.

Further, the rolling control rocking body (41) is configured to rock by a rocking body operating portion (50), and the rocking body operating portion (50) is arranged on the right side wall (26) of the hitch body (26). The rolling control motor (50 ') is attached to the upper part of 26a), and the right end of the rocker working rod (52) is interlockingly connected to the speed reducer (51) which is interlockingly connected to the motor (50'). Five
The left end of 2) is extended to the left along the rolling control oscillator (41), and the screw part (52
The a) is screwed to the screwing portion (53) attached to the upper rear surface of the rolling control rocking body (41).

The upper threaded portion (53) is attached to the pivot (55) that is axially mounted in the front-rear direction between the rolling control rocking body (41) and the mounting bracket (54) mounted on the rocking body (41). , Is swingably mounted around the axis of the pivot shaft (55), and supports the rocking body operating rod (52) in a state orthogonal to the pivot shaft (55).

With this configuration, the rolling control motor (50 ') is driven in the forward or reverse rotation direction to move the rocking body operating rod (5').
2) Turn the screw part (53) in the same direction as the rod (5).
The rolling control oscillating body (41) can be oscillated by moving the rolling control oscillating body (41) in the leftward or rightward direction.

Further, a tilt sensor (56) is mounted on the sensory support portion (41b) which is horizontally extended rearward from the upper left end of the rolling control rocker (41), and the tilt sensor (56) is The left and right inclination angles of the planting part (8) with respect to the planting surface (38) are detected, the detection result is transmitted to a controller (not shown), and the controller controls the rolling control motor (50 ') for a certain period of time. Driving in the forward or reverse rotation direction, as described above, the rolling control oscillator (4
1) is rocked so that the planting part (8) is held horizontally with respect to the planting surface (38).

Further, FIG. 4 shows a lifting operation mechanism (60) of the planting part (8 ') for maintaining a constant planting depth, and the lifting operation mechanism (60) is the body frame (2). ) A rack support portion (61) attached to the rear end of the rack supports an elevator rack (62) whose rear end is connected to an elevator mechanism (9 ') so that the rack can be moved forward and backward in a tilted posture of front low rear high. The rack (62) can be moved back and forth by a rack operating motor (63).

Moreover, the drive of the rack operating motor (63) is detected by the detector (66) through the interlocking wire (65) for the amount of vertical movement of the sensor float (64) of the planting part (8 '). It is controlled by the controller (67) based on the result.

With this configuration, the planting part (8 ') can be moved up and down without providing a lifting hydraulic cylinder. Therefore, the space for hydraulic piping is reduced, and troubles specific to hydraulic equipment due to dust clogging are prevented. , And the weight of the machine body can be reduced.

The embodiment of the present invention is configured as described above, and according to this embodiment, the following operational effects are produced.

That is, as described above, the rolling control mechanism (4) is provided between the rear end of the lifting mechanism (9) and the front wall of the transmission case (11).
0), the rolling control mechanism (40) can control the rolling of the planting part (8), and the rolling control mechanism (40) can be used without using a conventional rolling regulation spring. Because of the configuration, even when the traveling section (1) is largely tilted to the left and right, the rolling control of the planting section (8) can be reliably performed, and good planting accuracy can be ensured.

[Brief description of drawings]

 FIG. 1 is a side view of a riding rice transplanter according to the present invention. FIG. 2 is a partially cutaway side enlarged view of the main part. FIG. 3 is a plan view of the main part. FIG. 4 is an explanatory view of the lifting operation mechanism of the planting part. (A): Passenger rice transplanter (1): Running section (8): Planting section (9): Lifting mechanism (11): Transmission case (27): Rolling bearing section (28): Rolling shaft (40): Rolling Control mechanism (41): Rolling control oscillator (50): Oscillator operating part (56): Tilt sensor

Claims (1)

[Scope of utility model registration request] 1. A planting part (8) is provided by connecting a planting part (8) to the rear of a traveling part (1) which can be self-propelled through an elevating mechanism (9).
On the front wall of the transmission case (11), a rolling shaft (28) whose axis extends in the front-rear direction of the planting part (8) is provided, and the front end of the rolling shaft (28) is connected to the lifting mechanism (9). An elevator mechanism (9) for a riding rice transplanter in which a rolling bearing (27) provided at a rear end is swingably supported so that a planting portion (8) can be freely rolled with respect to a traveling portion (1). A rolling control mechanism (40) for controlling rolling of the planting part (8) is provided between the rear end of the planting part (8) and the front end of the transmission case (11) of the planting part (8). The rolling control mechanism (40) includes a rolling control motor (50) arranged offset to the left or right from the longitudinal center line and a speed reducer (51) linked to the motor (50 '). A screw attached to the tip of the speed reducer (51) with the base end interlockingly connected to extend the tip in the left-right direction The operation rod in which the portion (52a) is screwed to the screwing portion (53) provided on the planting portion (8) side, and the rolling control motor (50 ') are attached to the planting surface (38).
And a tilt sensor (56) which is driven based on the detection result of the left-right tilt angle of the planting part (8) with respect to the paddy rice transplanter.