JP3422905B2 - Power transmission in riding rice transplanter - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission for a rice transplanter. 2. Description of the Related Art Conventionally, in this kind of riding rice transplanter, a rotation regulating slide piece around an axis is mounted on a transverse feed shaft having a spiral feed groove formed on the outer periphery. The seedling table was laterally fed by reciprocating left and right of the slide piece with the rotation of the horizontal feed shaft. However, the power transmission from the power distribution shaft to the horizontal feed shaft is configured to be performed via an intermediate shaft such as a vertical feed shaft, so that the number of parts is increased and the structure is complicated. Since the transverse feed shafts are disposed apart from each other, there is a problem in that the case body for inserting the intermediate shaft and the like becomes large in size, causing an increase in the weight of the machine body. In addition, since the machine frame supporting these shafts and the like covers the lower part of the seedling mounting table and the exposed portion of the traverse mechanism is small, there is a problem that inspection and maintenance of these portions are troublesome. [0003] The present invention has been conceived in view of the above-described circumstances, and has as its object to provide a power transmission device in a riding rice transplanter that can eliminate these disadvantages. The planting operation unit is connected to the traveling machine so as to be able to move up and down freely, and in the planting operation unit, rotation around the axis is regulated by a lateral feed shaft having a spiral feed groove formed on the outer periphery. The slide piece is screwed into the external fitting, and the seedling mounting table that is fed sideways based on the reciprocating movement of the slide piece with the rotation of the horizontal feed shaft, and the planted seedling that is mounted on the seedling mounting table A vertical feed mechanism that feeds vertically downward, and a planting arm that scrapes unit planted seedlings from the lower end of the seedling mounting table and plants it on the rice field at the rear end, and has a horizontal direction below the seedling mounting table Equipped with a four-row planting mechanism consisting of left and right planter cases provided at appropriate intervals In the riding rice transplanter, the left and right
Are connected by a drive case having a power distribution shaft inserted therein, and on the back side of the seedling mounting table, substantially equivalent to the lateral space between the left and right planter cases, and can be extended and retracted above the front end of the planter case. A horizontal feed shaft covered with a bellows boot is disposed along the left-right direction, and one end of the horizontal feed shaft in the left-right direction is pivotally supported by the horizontal feed conversion case.
An input shaft for inputting power from the traveling aircraft side to the eve case
While supporting the shaft, plug one end of the drive case in the left-right direction.
Attach the traverse conversion case via the intermediary case,
From the traveling machine body side via the input shaft planting unit power is power transmission to the power distribution shaft, is transmitted to the horizontal feed shaft through a convertible transmission mechanism of the horizontal feed quantity interior to the lateral feed conversion Case Further , a vertical feed lever for operating the vertical feed mechanism of the seedling mounting table is integrally rotatably assembled to the other end side of the horizontal feed shaft sandwiching the spiral feed groove and the slide piece. Each time the plant reaches the moving end, the planted seedling is vertically fed downward.
According to the present invention, while reducing the number of parts, simplifying the structure, and reducing the weight of the body of the riding rice transplanter having the lateral feeding mechanism for the seedling mounting table, the present invention achieves a horizontal cost reduction. It is intended to facilitate protection, inspection, and maintenance of the feed mechanism. Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a planting work section which is connected to the rear part of a traveling body of a riding rice transplanter so as to be able to move up and down, and the planting work section 1 reciprocates left and right to a work section frame 2 and the work section frame 2 side. At the lower end of the seedling mounting table 3, which is freely supported and obliquely inclined, the planting arm 4 for scraping unit planted seedlings from the lower end of the seedling mounting base 3 and planting it on the rice field, and at the lower end of the working unit frame 2. A float 5 and the like are provided so as to be swingable up and down, and all of these configurations are conventional. Reference numeral 6 denotes a drive case fixed to the upper end of the working unit frame 2 in the left-right direction. The drive case 6 supports an input shaft 7 extending in the front-rear direction. The power distribution shaft 8 is inserted in the direction. The input shaft 7 receives engine power from the machine body via a drive shaft (not shown), and transmits the input power to a power distribution shaft 8 via a bevel gear transmission unit 9. Reference numeral 10 denotes a substantially horizontal planter case which is mounted laterally at appropriate intervals on both left and right sides of the drive case 6 provided below the seedling mounting table 3. At the rear end, a planter shaft 11 extending in the left-right direction is pivotally supported in a penetrating manner. The planting arm 4 is assembled to the left and right protruding end of each planter shaft 11 to constitute a four-row planting mechanism. ing. The planting arm 4 is provided with sprockets 12 provided at both right and left ends of the power distribution shaft 8.
The planting operation is performed by power transmitted to the planter shaft 11 from the transmission chain 13 through the transmission chain 13. On the other hand, 14 is a spiral feed groove 14a on the outer periphery.
Are formed, and the lateral feed shafts 14 are juxtaposed and arranged above the drive case 6 so as to be exposed from the drive case 6. That is, the transverse feed shaft 14
A boss 6a integrally protruding from the left end of the drive case 6; and a lateral feed conversion case 1 assembled to the right end of the drive case 6 via the planter case 10.
5 is axially supported between, 且 the back side of the seedlings the platform 3
Approximately the horizontal space between the left and right planter cases 10, 10
Correspondingly, it is disposed above the front end of the planter case 10. By the way, in the above-mentioned lateral feed conversion case 15,
Is equipped with a transmission mechanism that can convert the traverse amount ,
The right end of the power distribution shaft 8 penetrating through the right planter case 10 and the right end of the lateral feed shaft 14 are internally provided, and the power distribution shaft 8
Power is transmitted from the shaft to the transverse feed shaft 14, but the power distribution shaft 8 transmits the power directly to the transverse feed shaft 14 by the transmission chain 16 without passing through an intermediate shaft such as a vertical feed shaft as in the related art. It is supposed to. In addition, 17 and 1
Reference numeral 8 denotes first and second conversion sprockets around which the transmission chain 16 is suspended.
Numeral 18 is attached to the right end of the power distribution shaft 8 and the right end of the transverse feed shaft 14 so as to be integrally rotatable. By replacing these conversion sprockets 17 and 18 with ones having different numbers of teeth. A lateral feed amount of the seedling mounting table 3 described later can be converted. Incidentally, 19
Is a cover for closing the opening of the lateral feed conversion case 15. Further, reference numeral 20 denotes a slide piece which meshes with the lateral feed shaft 14 so as to be fitted externally. The slide piece 20 is connected to the seedling mounting table 3 by the connecting plate 21 without passing through a slide bar as in the prior art. Directly connected. And the slide piece 20 whose rotation is restricted is
The seedling mounting table 3 is laterally fed based on the reciprocating movement of the lateral feed shaft 14 in one direction. Reference numeral 22 denotes an elastic bellows boot that covers the transverse feed shaft 14. Reference numeral 23 denotes a vertical feed mechanism provided on the seedling mounting table 3. The vertical feed mechanism 23 includes a pair of upper and lower rollers 24, 24, a belt 25 suspended between them, and a lower roller. The feed lever 26 is connected to the feed lever 24 via a ratchet mechanism (not shown) for restricting reverse feed, and the seedling contact surface of the belt 25 is lowered by a predetermined amount as the feed lever 26 is pushed up. Seedling stand 3
A vertical feed lever for intermittently pushing up the feed lever 26 every time the seedling mounting table 3 reaches the moving end of one stroke. Reference numeral 27 is attached to the left end of the lateral feed shaft 14 so as to be rotatable integrally. That is, the horizontal feed shaft 14 is also used as the vertical feed lever shaft without providing a particularly vertical feed lever shaft as in the related art. In the embodiment of the present invention configured as described above, the seedling mounting table 3 is laterally fed based on the reciprocating left and right movement of the slide piece 20 accompanying the one-way rotation of the lateral feed shaft 14. The power of the lateral feed shaft 14 is directly transmitted from the power distribution shaft 8 disposed close to the transverse feed shaft 14 without passing through an intermediate shaft. Therefore, it is possible to reduce the number of parts, simplify the structure, reduce the weight of the apparatus, and the like, thereby eliminating the need for the conventionally provided intermediate shaft. Also, with the improvement of transmission efficiency, there is no deviation between the horizontal feed timing and the planting timing, and there is no deviation between the vertical feed timing and the planting timing of planted seedlings linked to the horizontal feed, and the planting accuracy is improved. Can also be achieved. [0012] Moreover, since the horizontal feed shaft 14 and the power distribution shaft 8 are arranged close, the power distribution shaft 8 and the horizontal feed shaft 14 single
Compared with those in interpolated so to one of the case body, together with the case body can be reduced in weight of the planting working portion 1 can be reduced in size, before and after the balance of the aircraft along with this Can also be improved. Further, the lateral feed shaft 14 is inserted into the case body and is exposed without being supported by a shaft, and is brought close to the upper side of the drive case 6 so as to be positioned on the rear side of the seedling mounting table 3 inclined to the front height.
And the horizontal spacing between the left and right planter cases 10, 10
Since the horizontal feed shaft 14 is disposed substantially above the front end portion of the planter case 10 so as to be covered with a telescopic bellows boot 22,
Because it is located in the center, the right and left
The lance is also good, and the lateral feed shaft 14 is protected on its upper side and lower side by a seedling mount 3, a drive case 6, and a planter case 10, respectively, so that damage can be prevented and the front side is vacant. ， Easy to maintain. Further, in this embodiment, the lateral feed shaft 14 is not supported by a dedicated shaft support member, and a boss portion 6 a integrally protruded from the left end portion of the drive case 6 and a right end portion of the drive case 6. Since it is pivotally supported between the horizontal feed conversion case 15 assembled via the planter case 10, parts can be shared and the number of parts can be reduced. Further, since the slide piece 20 is directly connected to the seedling mounting table 3 by the connection plate 21 without using a slide bar as in the conventional case, the number of parts is further reduced to simplify the structure and to reduce the number of parts. The weight of the fuselage can be reduced. In summary, according to the present invention, the transverse feed shaft 14 covered with the elastic bellows boots 22 for reciprocating the seedling table 3 in the left-right direction is provided on the rear side of the seedling table 3 in the left-right direction. In addition, one lateral end of the lateral feed shaft 14 in the left-right direction is pivotally supported by the lateral feed conversion case 15, and the planting portion power transmitted from the traveling machine body side is transferred to the lateral feed conversion case 15. Traverse shaft 1 via a transmission mechanism capable of converting the traverse amount, which is installed inside
4 and a transmission mechanism capable of converting the traverse feed amount is provided without increasing the size of the case body by mounting the traverse shaft 14 in a case body such as the drive case 6. The transverse feed shaft 14 can be rotationally driven only by supporting one end of the transverse feed shaft 14 with the use of the small transverse feed conversion case 15. The weight can be reduced. In particular, the lateral feed shaft 14 has one lateral end in the lateral direction.
The case 15 is pivotally supported by the exchange case 15
Is a drive that connects the left and right planter cases 10, 10.
A planter case 10 is attached to one end of the eve case 6 in the left-right direction.
The transverse feed shaft 14
When the support structure for attachment to the work unit 1 becomes simple
In both cases , the horizontal feed shaft 14 is substantially equivalent to the horizontal space between the left and right planter cases 10 and 10 constituting the four-row planting mechanism, and is positioned above the front end of the planter cases 10 and 10 in the left and right direction. It can be easily arranged along
As a result, the lateral feed shaft 14 is positioned substantially at the center of the planting operation unit 1, and the lateral balance of the planting operation unit 1 can be improved. Further, the vertical feed mechanism 23 of the seedling mounting table 3
The vertical feed lever 27 for operating the spiral feed groove 14
a and the other end of the horizontal feed shaft 14 sandwiching the slide piece 20 so as to be rotatable integrally, and every time the seedling mounting table 3 reaches the moving end, the planted seedling is vertically fed downward. Therefore, a vertical feed shaft or the like is separately provided in the case and the vertical feed mechanism is operated by the vertical feed lever 27 fixed to the vertical feed shaft without increasing the number of parts. The vertical feed mechanism 23 can be operated with a very simple structure. Moreover, the vertical feed lever 27
Is provided at the other end of the lateral feed shaft 14 on the opposite side of the lateral feed conversion case 15, so that even when the lateral feed amount of the seedling mounting table 3 is changed in the horizontal feed conversion case 15, the vertical feed lever 27 is not in the way, and the seedling table 3 is fed sideways
Easy to change and adjust the amount on the outside of the planting work part 1
Can be. In addition, a drive case for interpolating the power distribution shaft 8
An input shaft 7 for inputting power from the traveling aircraft side to the base 6
To the power distribution shaft 8 via the input shaft 7
The power transmitted to the planting part is transmitted to the lateral feed conversion case 15.
Lateral feed through a transmission mechanism that can convert the amount of transverse feed to be installed
Since the power is transmitted to the shaft 14, the power is transmitted to the traverse feed shaft 14.
The dynamic structure is simplified, and the case of the planting
Live case 6, left and right planter cases 10,10,
And size reduction and division of each of the traverse feed conversion cases 15
By configuring, the weight of the planting work section 1 can be reduced.
You.

[Brief description of the drawings] FIG. 1 is a side view of a planting work section. FIG. 2 is a rear view of the same. FIG. 3 is a rear view of a main part of the above. FIG. 4 is a sectional view of a main part of a transverse feed shaft. [Explanation of symbols] 1 planting work department 3 Seedling platform 4 Planting arm 6 Drive case 8 Power distribution shaft 10 Planter case 14 Side feed axis 20 slide pieces 22 Bellows boots

────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hideaki Fukuma 667-1 Iya-cho, Oaza, Higashi-Izumo-cho, Yatsuka-gun, Shimane Prefecture Inside Mitsubishi Agricultural Machinery Co., Ltd. (56) References JP-A-3-35709 (JP, A) 61-72125 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01C 11/02 313 B A01C 11/02 351 B A01C 11/02 362 A

Claims (1)

(1) A planting work section (1) is connected to a traveling body so as to be able to move up and down, and a spiral feed groove (14a) is provided in the planting work section (1). Is screwed onto a lateral feed shaft (14) formed on the outer periphery of the slide piece (20), the rotation of which is regulated around the axis, so that the slide is caused by the rotation of the lateral feed shaft (14). A seedling table (3) laterally fed based on the reciprocating movement of the piece (20) from side to side, and a vertical feed mechanism (23) for vertically feeding planted seedlings placed on the seedling table (3) downward. ) And a planting arm (4) at the rear end for scraping the unit planted seedlings from the lower end of the seedling mounting table (3) and planting the seedlings on the rice field, and has a lateral direction below the seedling mounting table (3). planter case right and left provided with a suitable interval (10), in the riding rice transplanters with 4 Article planting planting mechanism consists (10), said left and right planter
Drive (10, 10) inserted into the power distribution shaft (8)
The planter case (1 ) is connected to the rear side of the seedling mounting table ( 3) by substantially the horizontal distance between the left and right planter cases (10) and (10).
A horizontal feed shaft (14) covered with an elastic bellows boot (22) is disposed along the left-right direction above the front end of the horizontal feed shaft (14). Is axially supported on a lateral feed conversion case (15).
Input power from the traveling aircraft to the drive case (6)
Drive shaft (6) while supporting the input shaft (7)
Through the planter case (10) at one end in the left-right direction
The transverse feed converting casing (15) attached to said input shaft from the vehicle body side planting unit power is power transmission to the power distribution shaft (8) through (7), the lateral feed conversion case (15)
Horizontal feed shaft through a lateral feed amount of convertible transmission mechanism that interior to transmit to (14), further longitudinal feed lever for actuating the longitudinal feeding mechanism (23) of said seedling mounting base (3) (27)
With a spiral feed groove (14a) and a slide piece (2).
0), is rotatably assembled integrally with the other end of the transverse feed shaft (14), and each time the seedling mounting table (3) reaches the moving end,
A power transmission device for a riding rice transplanter, wherein a planted seedling is vertically fed downward.