JPH07327431A - Speed changer for lateral transfer of seedling table of riding transplanter - Google Patents

Abstract

PURPOSE:To facilitate the observation of the speed-changing state of a lateral transfer speed-changer while riding on a machine body. CONSTITUTION:A lateral transfer speed-changer built in a speed-changer case 18 is operated by the operation of a lateral transfer speed-changing lever 42 placed at a side of the front part of the speed-changer case 18 directly observable from the driver's seat on the mobile machine body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lateral feed transmission device for a seedling table in a riding transplanter such as a riding rice transplanter.

[0002]

BACKGROUND OF THE INVENTION Generally,
In this seed-riding transplanter, the planted seedlings are scraped from the seedling mounting table that is fed laterally at a predetermined speed and planted in the field. The lateral feeding speed is the type of seedling (young seedling, middle seedling, adult seedling). ), It is necessary to shift gears accordingly. Therefore, it is proposed that a lateral feed transmission is provided in the transmission path to the lateral feed mechanism of the seedling mounting table, and the lateral feed transmission is operated to change gears based on the operation of the lateral feed shift lever. Has been done. However, in the past, since the lateral feed shift lever was arranged below the shift case in which the lateral feed transmission device is incorporated, it is difficult to see the lateral feed shift lever when the vehicle is on board. When confirming, it was necessary to get off the aircraft one by one, and the workability was inferior.

[0003]

DISCLOSURE OF THE INVENTION The present invention was devised with the object of providing a transverse feed transmission device for a seedling mounting table in a riding transplanter which can eliminate these drawbacks in view of the above-mentioned circumstances. In the planting part connected to the rear of the traveling machine body, a transmission case in which the lateral feed transmission of the seedling table is incorporated is arranged, and the lateral feed transmission is connected to the lateral feed transmission lever. In a passenger transplanter in which a shift operation is performed based on an operation, the lateral feed shift lever is arranged on a front side surface portion of a shift case. Further, according to the present invention, the position of the lateral feed shift lever can be easily confirmed by this configuration.

[0004]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 is a traveling machine body of a five-row planting rice transplanter, and a rear part of the traveling machine body 1 is connected to a planting section 3 via a lifting link mechanism 2 so as to be vertically movable. The planting part 3 includes a working part frame 4 and the working part frame 4
A seedling mounting table 5 supported to be movable left and right, a planter arm 6 for scraping planted seedlings from the lower end of the seedling mounting table 5 and planting them on the rice field, and provided vertically swingably below the working unit frame 4. Although the float 7 and the like are provided, all of these basic configurations are the same as conventional ones.

Reference numeral 8 denotes a drive case fixedly mounted on the working unit frame 4. The drive case 8 is supported by the tip of the rolling support shaft 9. An input shaft 10 that faces the direction and a transmission shaft 11 that faces the left and right directions are incorporated. The input shaft 10 receives engine power from the machine body side via a PTO drive shaft (not shown), and the input power is supplied to the bevel gear transmission unit 1.
It is adapted to be transmitted to the transmission shaft 11 via 3.

Reference numeral 14M denotes an intermediate planter case disposed at the left and right intermediate position of the planting section 3, and the intermediate planter case 14M has a center of the planting section (axial center of the rolling support shaft 9) C.
The drive case 8 is directly attached to the left end portion of the drive case 8 so that the drive case 8 is displaced to the left by a predetermined dimension. That is, of the five planter arms 6 provided as a whole, one set of planter arms 6 located in the middle is assembled on the right side surface of the tip portion of the intermediate planter case 14M, so that the intermediate planter case 10M is biased to the left side in advance. The planter arm 6 is located at the center C of the planting part.

The left and right planter cases 14L and 14R are disposed at the left and right positions of the planting section 3, and the left side planter case 14L has two sets of left side out of a total of five sets of planter arms 6. On the other hand, since the right two planters are assembled to the right planter case 14R, they are evenly distributed to the center C of the planting part. Therefore, the left side planter case 14L is connected to the left side surface of the intermediate planter case 14M via the relatively short left side shaft case 15L, while the right side planter case 14R includes the right side shaft case 15R longer than the left side shaft case 15L. It is connected to the right end of the drive case 8 via the. And each planter case 14
The planter arms 6 provided on M, 14L and 14R are
The planting operation is performed based on the power transmitted by the chain from the sprocket 16 provided on the transmission shaft 11.

The transmission shaft 11 includes an intermediate transmission shaft 11M extending from the intermediate planter case 14M to the right planter case 14R, a left transmission shaft 11L extending from the intermediate planter case 14M to the left planter case 14L, and a right planter case 14R. The right transmission shaft 11R extending outward to the right is divided into three parts, and the end portions of the respective shafts are connected to each other by the sprocket 1
The boss portion 16a of 6 is spline-fitted to be integrally rotatable.

On the other hand, 17 is a spiral lateral feed groove 17 on the outer circumference.
a is formed, and the screw shaft 17 is arranged in parallel with the transmission shaft 11, and is rotated in one direction by the power of the transmission shaft 11 transmitted through a transmission case 18 described later. However, the guide piece 20 connected to the seedling mounting table 5 is externally engaged with the screw shaft 17. That is,
It is configured to laterally feed the seedling placing table 5 based on the left-right reciprocating movement of the guide piece 20 that accompanies one-way rotation of the screw shaft 17. Reference numeral 21 is an expandable bellows boot that covers the screw shaft 17.

Reference numeral 22 denotes a vertical feed drive cam integrally provided on the left end portion of the screw shaft 17, and the vertical feed drive cam 22 is provided with an operating lever of a vertical feed mechanism 23 provided on the seedling table 5. Each time the seedling placing table 5 reaches the turning point of lateral feeding, the seedling placing table 5 is tapped up, and the placed seedlings are fed vertically by a predetermined amount based on the operation of the vertical feeding mechanism 23 accompanying this tapping operation.

The transmission case 18 is assembled to the right side planter case 14R and the like by using bolts 24 and 25, and a screw shaft 17 penetrating the case.
The extension shaft 26 and the right transmission shaft 11R are rotatably supported by bearings 27 and 28. Both shafts 11R and 24 are provided in a lateral feed transmission mechanism 2 which will be described later.
9, the right transmission shaft 11R is connected (spline fit) to the boss portion 16a so that it can be inserted and removed freely, while the extension shaft 26 is also connected to the screw shaft 17. Since the bolts 24 and 25 are removed, the transmission case 18, the right transmission shaft 11R, the extension shaft 26, and the lateral feed transmission mechanism 29 are combined into a single lateral feed transmission assembly. It can be attached and detached.

Further, the transmission case 18 is disposed on the side opposite to the intermediate planter case 14M with respect to the center C of the planting portion, and therefore, the deviation caused by biasing the intermediate planter case 14M to the left side. Although the load can be reduced by utilizing the load of the lateral feed speed change assembly, the distance between the speed change case 18 and the center C of the planting portion can be further calculated from the distance between the middle planter case 14M and the center C of the planting portion. Since it is also set to a large value, it is possible to effectively utilize the load of the lateral feed shift assembly, which is lighter than the intermediate planter case 14M, to improve the left-right balance.

The lateral feed speed change mechanism 29 includes first and second drive sprockets 30 and 31 that are rotatably assembled to the right transmission shaft 11R, and first and second drivens that are integrally assembled to the extension shaft 26. Sprocket 32,
33, the first chain 34 suspended by the first drive sprocket 30 and the first driven sprocket 32, the second chain 35 suspended by the second drive sprocket 31 and the second driven sprocket 33, the right transmission shaft 11R It is composed of a clutch body 36 and the like which are spline-fitted to the. That is,
The lateral feed transmission mechanism 29 includes a first drive sprocket 30, a first chain 34, and a first driven sprocket 32, a first power transmission path, and a second drive sprocket 31.
A second power transmission path is formed via the second chain 35 and the second driven sprocket 33, and these power transmission paths are defined by the first and second drive sprockets 30, 3
Switching is performed based on the selective engagement of the clutch body 36 with respect to 1. Reference numeral 37 is a cover for closing the opening of the conversion case 18.

Reference numeral 38 denotes a shifter shaft. The shifter shaft 38 is rotatably supported by a boss portion 18a projecting from the front side surface of the transmission case 18, and has a shaft base end located in the case. A shifter fork 39 that engages with the clutch body 36 is integrally provided in the portion, while a stopper arm 40 is integrally provided in the tip end portion of the shaft protruding from the front side surface of the case. That is, the clutch body 36 operates to change gears based on the swing of the stopper arm 40, but the stopper arm 40 does not move the clutch arm 36 up and down.
By contacting with, the swing is controlled more than necessary.

Reference numeral 42 denotes a lateral feed speed change lever for operating the clutch body 36 via the stopper arm 40. The lateral end speed change lever 42 has a coil end 42a which functions as a torsion ammunition at the base end thereof. Is integrally formed, and is attached to the front side surface portion of the transmission case 18 with the coil portion 42a being inserted into the boss portion 18a. Then, the hook portion 42b extending from one end side of the coil portion 42a to the left side
Is engaged with the elongated hole 40a formed in the stopper arm 40, while the operation portion 42c extending rightward from the other end of the coil portion 42a is provided with a pair of upper and lower engaging grooves 41b formed in the lever case 41. It is adapted to be selectively locked to. That is, the lateral feed shift lever 42 is set to the upper engaging groove 4
1b, the stopper arm 40 elastically abuts the lower stopper piece 41a, while the lateral feed shift lever 42 is locked in the lower locking groove 41b. , The stopper arm 40 has an upper stopper piece 41a
Although the lateral feed transmission lever 42 is assembled to the front side surface portion of the transmission case 18 as described above, it can be easily viewed even from the riding position of the traveling machine body 1. In addition, when the planting part 3 is raised, the lever can be operated while the traveling machine body 1 is aboard.

On the other hand, 43 is an apron arranged along the lower end of the seedling mounting table 5, and the apron 43 is vertically movable so as to adjust the number of planter arms 6 to be planted. . Further, 44 is a pipe provided with an up / down position adjusting arm 44a of the apron 43, and the pipe 44 is rotatably supported by brackets 14a protruding from the planter cases 14 in the left-right direction. The intermediate planter case 14
Since M exists, it is divided into left and right pipes 44L and 44R that sandwich the intermediate planter case 14M. And
The divided left and right pipes 44L, 44R are integrally connected by a connecting plate 45 having an U-shape, and are rotated based on the operation of the number-of-plants adjusting lever 46 connected to the connecting plate 45 to rotate the apron. Although 43 is moved up and down, since the connecting plate 45 covers the front and left and right sides of the vertical feed drive cam 22 described above, it also functions as a guard member for the vertical feed drive cam 22 that constantly rotates. ing.

By the way, the front portion of the float 7 is connected to and supported by the lower end portion of the bent link 47 that hangs down from the fixed portion of the planting portion 3, while the rear portion of the float 7 is connected to the stay 48.
The stay 48 is swingably supported by the front end portion of the float hanger 49 protruding rearward and downward from the left and right, and the stay 48 is rotatably supported by the outer surfaces of the left and right planter cases 14L and 14R. Planting depth adjustment lever 50
The height of the rear part of the float 7 (the height relative to the planter arm 6) is raised or lowered based on the operation of the planting depth adjusting lever 50 to adjust the planting depth. You can do it.

Reference numeral 51 is a line drawing marker provided on both right and left sides of the planting section 3, and the line drawing marker 51 is a line which projects outward from the planting section and draws a line for the next planting process. Although it is possible to swing and transform between a pulling posture and a storage posture which stands upright along the side portion of the planting portion, the coil ammunition 52 constantly urges the wire 53 toward the drawing posture side. It is connected to the marker actuating device (not shown) via the. When the marker operating device loosens the wire 53, the urging force of the coil ammunition 52 causes the wire drawing marker 51 to swing to the wire drawing posture, while when the wire 53 is pulled, the coil ammunition 52
The drawing marker 51 is structured to be stored against the biasing force of. By the way, the wire drawing marker 51 is used for the stay 4
Since it is provided on the marker stay 54 integrally extended to the tip portion of 8, the front and rear is rotated with the operation of the planting depth adjusting lever 50, but the other end of the coil ammunition 52 is Since it is attached to the float hanger 49 which is interlocked with the operation of the planting depth adjusting lever 50, not the fixed part of the planting part 3, the wire drawing marker 51 and the coil ammunition 52 are integrated when the lever is operated. It is designed so that it does not change its urging direction due to the turning.

In the embodiment of the present invention constructed as described above, the lateral feed transmission mechanism 29 installed in the transmission case 18 is provided.
Shifts based on the operation of the lateral feed shift lever 42. However, since the lateral feed shift lever 42 is attached to the front side surface portion of the shift case 18, it can be directly moved from the riding position of the traveling machine body 1. It becomes possible to see. Therefore, it is possible to improve the workability of checking the lever by eliminating the trouble of getting off the machine one by one to check the lever position.

Moreover, the position of the lateral feed shift lever 42 is closer to the traveling machine body 1 side than the position where the lateral feed shift lever 42 is placed below the shift case 18.
It is also possible to operate 2 while riding, and as a result,
It is possible to improve the workability during gear shift operation by eliminating the trouble of operating the lever after getting off the aircraft.

Further, since the transmission case 18 is disposed on the side opposite to the intermediate planter case 14M with respect to the center C of the planting portion, an eccentric load generated by displacing the intermediate planter case 14M to the left side is provided. The load of the lateral feed shift assembly can be utilized to reduce the load, and as a result, the left-right balance of the planting part 3 can be improved and the planting accuracy can be improved. Moreover, since the distance between the shift case 18 and the center C of the planting portion is set to be larger than the distance between the center C of the intermediate planter case 14M and the center C of the planting portion, the lateral feed shift assembly that is lighter than the intermediate planter case 14M. There is also an advantage that the load can be effectively used.

Further, the fixing bolt 2 of the transmission case 18
Since the transmission case 18, the right transmission shaft 11R, the extension shaft 26, and the lateral feed transmission mechanism 29 can be attached and detached as one lateral feed transmission assembly in a state in which Nos. 4 and 25 are removed, the above-mentioned members are attached. Perhaps it is possible to eliminate the trouble of individually assembling the parts 3 and improve the assemblability of the lateral feed transmission device, or to facilitate maintenance and prepare a lateral feed gear assembly with different gear ratios. For example, there is also an advantage that various transverse feed speeds can be supported simply by exchanging the assembly.

Further, the transmission shafts 11 for transmitting lateral feed power and the like are the left and right and intermediate transmission shafts 11L, 1L.
Since the transmission shaft 11 is divided into three parts, the workability, the assembling property, and the maintainability of the transmission shaft 11 can be improved, and the shafts 11L, 11R, 11
M is the boss 1 of the sprocket 16 that transmits the planting power.
Since they are connected by 6a, the boss portion 16a can also be used as a joint member to contribute to the reduction of the number of parts and the simplification of the structure.

The pipe 44 constituting the vertical position adjusting mechanism of the apron 43 is divided into left and right pipes 44L and 44R, and the left and right pipes 44L and 44R are divided.
When integrally connecting the vertical feed drive cams with the U-shaped connecting plate 45, the connecting plate 45 is configured to cover the front and left and right sides of the vertical feed drive cam 22, so that the vertical feed drive cam 22 that constantly rotates is guarded. It will be possible
As a result, it is possible to effectively prevent the winding of wires, wires, etc., in the vertical feed drive cam 22, and it is also possible to contribute to the reduction of the number of parts and the simplification of the structure based on the shared use of members. .

Furthermore, the other end of the coil ammunition 52 for urging the wire drawing marker 51 is not fixed to the planting part 3 but to the float hanger 49 which is interlocked with the operation of the planting depth adjusting lever 50. Since it is locked, the planting depth adjustment lever 50
At the time of the operation of, the wire drawing marker 51 and the coil ammunition 52 rotate integrally, and as a result, the coil ammunition 52
The inconvenience that the biasing direction of the
Is it possible to always operate smoothly,
The float hanger 49 can also be used as the engaging member of the coil ammunition 52 to contribute to the reduction of the number of parts and the simplification of the structure.

[0026]

In summary, since the present invention is constructed as described above, the lateral feeding speed of the seedling table is set in the planting portion connected to the rear of the traveling machine body based on the operation of the lateral feeding shift lever. However, since the lateral feed speed change lever is disposed on the front side surface of the speed change case in which the lateral feed speed change mechanism is incorporated, the lateral feed speed change lever is provided even from the riding position of the traveling machine body. It is possible to directly view the lateral feed speed change lever, and as a result, it is easier to check the position of the lateral feed speed change lever as compared to the conventional one where it is difficult to see the lateral feed speed change lever. it can.

[Brief description of drawings]

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

FIG. 2 is a side view of a planting part.

FIG. 3 is a rear view showing a transmission section of the planting section.

FIG. 4 is a partially cutaway development view of the same.

FIG. 5 is a cross-sectional view (back surface) of the lateral feed transmission.

FIG. 6 is a sectional view (side view) of the above.

FIG. 7 is a front view showing a lateral feed shift lever.

FIG. 8 is a side view showing a number-of-plants adjusting mechanism.

FIG. 9 is a rear view showing a drawing marker.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling machine 3 Planting part 5 Seedling stand 18 Shift case 29 Side-feed speed change mechanism 42 Side-feed speed change lever

Claims (1)

[Claims] 1. A planting part connected to the rear of the traveling body,
In a passenger transplanter in which a transmission case in which a lateral feed transmission device of a seedling mounting table is incorporated is disposed, and the lateral feed transmission device is operated to shift based on an operation of a lateral feed transmission lever,
A transverse feed transmission device for a seedling mounting table in a passenger transplanter, wherein the transverse feed transmission lever is arranged on a front side surface portion of a transmission case.