JPH056965B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a system in which a seedling planting device comprising a plurality of transmission cases each equipped with a seedling planting claw is installed in a movable manner on a traveling machine body. This paper relates to the improvement of a so-called multi-row rice transplanter.

[Problems to be solved by conventional technology and invention]

Conventionally, this multi-row rice transplanter (in other words, a plurality of transmission cases each equipped with seedling planting claws are arranged side by side, and a cylindrical member is used to connect them, and each transmission case is connected to the cylindrical member within the cylindrical member. For example, as described in Japanese Utility Model Application Publication No. 52-83933, etc., a seedling planting device comprising a power transmission shaft is attached to a traveling machine so that it can be raised and lowered. One of the transmission cases is configured to be directly attached to the cross-feeding case that has a built-in cross-feeding mechanism for the seedling stand, so each transmission case
Two types of transmission cases must be manufactured: one that is attached directly to the cross-feed case and one that is indirectly attached to the cross-feed case via a cylindrical member. There was a problem in that the manufacturing cost increased significantly due to the increase in the variety of products and the number of manufacturing steps.

Moreover, in this conventional device, when the seedling planting device is attached to the traveling machine so that it can be raised and lowered through a pair of left and right lower links, the seedling planting device Since the pivot bracket for the transplantation device side is configured to be fixed to the transverse feed case, the interval between the two pivot brackets cannot be made wider than the width of the transverse feed case. In other words, since the spacing between the pivot brackets is relatively narrow, not only does the seedling planting device tend to tilt in the left-right direction, but when the seedling planting device is lifted away from the field, the seedling planting device There was a problem that both ends of the seedling table were bent downward, causing curvature in the lateral reciprocating movement of the seedling table.

The present invention aims to solve these problems.

[Means to solve the problem]

In order to achieve this object, the present invention provides a traveling machine with a plurality of transmission cases equipped with seedling planting claws, a cylindrical member connecting the transmission cases, and a lateral feeding mechanism for the seedling platform. A multi-purpose seedling planting device including a built-in cross-feeding case and a power transmission shaft for each transmission case inserted into the cylindrical member so as to be movable up and down via at least a pair of left and right lower links. In a row planting type rice transplanter, a narrow hollow protrusion is integrally formed in the horizontal feeding case,
This hollow protrusion is inserted between the joint between one transmission case of the plurality of transmission cases and the cylindrical member to the one transmission case, or in the middle of the cylindrical member. , a power transmission mechanism between the lateral feed mechanism and the power transmission shaft is provided in the hollow protrusion, and a pivot bracket for the at least one pair of left and right lower links is fixed to the cylindrical member. I made it.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The front and rear bodies 2 and 3 are each formed into a hollow transmission case, and both have transmissions 5 and 6 built-in, while the rear end of the front body 2 is and the front end of the rear fuselage 3,
They are horizontally bendably connected via a vertical shaft 7, and wheels 10 and 11 are mounted on both left and right sides of the front and rear bodies 2 and 3 via swing cases 8 and 9, respectively. The distance between the ruts on both rear wheels 11 is such that the distance between ruts on both front wheels 10 is ``4'' and the distance between ruts on both rear wheels 11 is ``2'' for the seedling planting row spacing of ``1''. It is set as follows.

Engine 12 attached to the rear end of the rear fuselage 3
is connected to the input shaft 13 of the rear transmission 6,
The output shaft 14 of the rear transmission 6 is connected to the longitudinal shaft 7.
The output shaft 16 of the front transmission 5 is linked to the input shaft 15 of the front transmission 5 in the front body 2 via the PTO
It is connected to the shaft 17 via a clutch mechanism 18 for stopping the upper part of the seedling claw, while each of the wheels 10, 1
1, the traveling body 1 travels by transmitting power from both transmissions 5 and 6, respectively.

Further, a handle base 19 is provided at the front part of the upper surface of the front body 2, and a control handle 2 provided thereon is provided.
0 steering mechanism 21 and a sprocket 22 attached concentrically to the vertical shaft 7 on the upper surface of the front end of the rear fuselage 3 through a chain 23,
The aircraft is configured to be steered by adjusting the bending direction and degree of bending of both bodies 2 and 3 by rotating the control handle 20.

Reference numeral 24 denotes a seedling planting device located in front of the front body 2, and the seedling planting device 24 is composed of three seedling planting units 25 arranged in parallel.
Reference numeral 5 includes a transmission case 26 formed in an inverted "dog" shape when viewed from the side, a pair of seedling planting claws 28, 28 attached to both ends of a claw shaft 27 pivotally supported at the tip thereof, and a seedling mounting stand 34. It is generally constituted by a float 33 located on the lower surface of each transmission case 26.

A bumper 31 made of a pipe is arranged in front of the seedling planting device 24, and a branch pipe 92 protruding from the bumper 31 for each seedling planting unit 25 is fixed to the tip of each transmission case 26. Each seedling planting unit is connected to each other by the bumper 31, and side bumpers 93 are provided on both left and right sides of the seedling planting device 24.
One end thereof is attached to one end of the bumper 31, and the other end thereof is detachably attached to one end of the seedling platform guide rail 70.

When attaching the float 33 to the transmission case 26 in the seedling planting unit 25, the 92 branch pipes of the bumper 31 and the upper surface of the tip of the float 33 are connected by a bendable inverted dogleg-shaped link 32.
Float 3
The bracket 33 fixed to the upper surface of the middle part of 3,
The float 33 is attached so as to be vertically adjustable by being pivotally attached to the lower end of a lever 30 with a handle 29 that is pivoted to the side surface of each transmission case 26 via a pin 30a using a pin 30b. At this time, an arc-shaped fixing plate 26' which also serves as a scale is attached to a portion of the lever 30 corresponding to the base of the handle 29, so that the handle 29 can be detachably locked at any position.

Each transmission case 26 is provided with a drive shaft 35 and an intermediate shaft 36, and the rotation of the drive shaft 35 is transmitted to the intermediate shaft 36 through a chain 37, and the free rotation sprocket 38 on the intermediate shaft 36 and the pawl are connected to each other. A chain 40 is wound around the idler sprocket 39 on the shaft 27, and a chain 40 is installed on the intermediate shaft 36 to automatically cut off the power transmission when the power transmitted to the pawl shaft 27 exceeds a certain level. The pawl shaft 27 is equipped with a clutch 43 secured to a sliding key 42.
and a spring 44 that urges the clutch 43 to always mesh with the free rotation sprocket 39. A knob 4 is provided at the tip of the transmission case 26.
A pin 46 with 5 is provided through the pin 46 so as to be rotatable around its axis, and the tip of the pin 46 is
Its semicircularly cut inner end engages with one side of the collar 47 on the outer periphery of the clutch 43, and by rotating this pin 46 through 180 degrees, the clutch 43 is released and the collar 47 is opened. The seedling planting claws 28, 2 are fitted into the recesses 48 on the sides with the pins 46.
8 is provided with an upper stop mechanism 49 configured to stop at the upper position (a state away from the field scene above).

Transmission case 2 in each seedling planting unit 25
Flange portions 50, 51 are provided on both left and right sides of the rear end of 6.
are integrally formed, both ends of the drive shaft 35 protrude from the center of the flanges 50 and 51 to the outside of the transmission case 26, and one end is formed into a screw shaft 52 and the other end is formed into an occluded shaft 53, respectively. The transmission cases 26 in each seedling planting unit 25 are connected to each other by cylindrical members 55 and 56 that are connected by bolts 54 to flanges 50 and 51 formed on the side surfaces of the transmission cases 26, and the cylindrical members Both ends of the power transmission shafts 57, 58 inserted into the drive shafts 55, 56 are removably connected to the threaded shaft 52 and the circular shaft 53 of each drive shaft 35 in each transmission case 26, respectively. 35 are connected in a line, and a drive shaft 35 is connected at the rear end of the transmission case 26 located at the center of each transmission case 26.
An input shaft 60 that transmits power via a pair of bevel gears 59 is pivotally supported.

Reference numeral 61 indicates a transverse feeding device for the seedling platform 34;
A cross-feeding case 62 is provided with a built-in cross-feeding mechanism for laterally reciprocating the cross-feeding case 62.
, a narrow hollow protrusion 62a is integrally formed, and the hollow protrusion 62a is connected to the flange 51 of the transmission case 26 located at the center of each transmission case 26, and the cylindrical member 56. The drive shaft 35 in the transmission case 26 is inserted into the hollow protrusion 62a.
from the transmission mechanism 6 in the cross-feeding case 62.
A chain 63 for power transmission to 4 is provided.

Further, inside the transverse feed case 62, there is a cylindrical camshaft 65 to which power is transmitted from the transmission mechanism 64,
A slidable feed shaft 66 is provided in parallel. The feed shaft 66 has a boat-shaped key 67 that is connected to the cam shaft 6.
It is engaged with the reciprocating spiral groove 68 of No. 5, and is horizontally fed by the rotation of the camshaft 65, and at the right and left ends of the lateral feed comes into contact with both fixed cams 69 on the camshaft 65, and is intermittently moved. It is configured to swing and rotate.

Furthermore, a long guide rail 70 with an L-shaped cross section is attached to the upper surface of the transmission case 26 in each seedling planting unit 25 via a metal fitting 72 at a square portion 71 on one longitudinal side edge of the long guide rail 70. 26
Arms 74, 74 each having a trochanter 73 at the tip are attached to the flange portions 50, 51 on the outer surface of both transmission cases 26 located on the outer side.

Guide rails 75 and 76 having a U-shaped cross section are attached to the upper and lower sides of the rear surface of the seedling stand 34, and the lower guide rail 75 is connected to the square portion 71 of the guide rail 70.
Then, the upper guide rails 76 are fitted and engaged with the trochanters 73 at the tips of both arms 74, respectively, so as to be movable in the lateral direction. At this time, as shown in FIG. 7, a removable pin 78 is provided at the end of the L-shaped metal fitting 77 attached to the ends of both arms 74 to prevent the upper guide rail 76 from coming off the trochanter 73. To prevent.

Seedling mats are mounted on the back surface of the seedling platform 34, with seedling mat feeders 80 connected to both ends of the feed shaft 66 via a bracket 79 and protruding from the upper surface of the seedling platform 34 at appropriate intervals. Vertical feed shaft 8
1 is attached via a bearing 82, and a one-way clutch 83 provided on the vertical feed shaft 81 and a lever 84 attached to the end of the feed shaft 66 are connected via a connecting rod 85. One-way clutch 8
By swinging and rotating the shaft 3, the vertical feed shaft 81 is rotated intermittently one pitch at a time.

The seedling planting device 24 configured in this manner includes a pair of left and right lower links 87 that are pivotally connected to each of a pair of left and right bracket pieces 86 fixed to the rear end portions of the cylindrical members 55 and 56, and a seedling mounting table 34. A single top link 8 connected to the tips of a pair of left and right masts 88 erected from cylindrical members 55, 56, etc. along the back surface of the
At 9, the lift arm 90 is attached to the front body 2 so as to be able to be raised and lowered, and is configured to be raised and lowered from the front body 2 side by rotating a lift arm 90 that engages both lower links 87. On the other hand, the input shaft 6
0, power is transmitted via a telescoping shaft 91 that connects with the PTO shaft 17.

In this configuration, if the operator sits on the seat 4 and lowers the seedling planting device 24 until each of its floats 35 is installed in the field, and then moves forward with the traveling body 1, the seedling planting device 24 moves to the position where each of its floats 33 is installed in the field and is skied, and the traveling aircraft 1
The power transmitted from the PTO shaft 17 to the input shaft 60 is
The power is transmitted from each drive shaft 35 to the seedling hooks 28, 28 of each transmission case 26 via the power transmission shafts 57, 68 in the cylindrical members 55, 56 connected in a row, and drives them. Transmission is transmitted from the drive shaft 35 to the camshaft 35 to horizontally feed the seedling stand 34 to which the feed shaft 66 is attached, and at the same time, the vertical feed shaft 81 is intermittently rotated one pitch at a time at the right or left end of the horizontal feed. Therefore, each seedling on the seedling stand 34 is planted along a plurality of rows (six rows in this embodiment) using the seedling planting claws 28 of each transmission case 26 in the field. In case, each transmission case 2
6 Handle 2 of adjustment link 30 protruding from the top surface
If 9 is rotated forward, the height between the float 33 and the transmission case 26 will be lowered.On the other hand, since the seedling planting claw 28 is always rotated at a constant radius, the depth of seedling planting will be increased; If the handle 29 is rotated backward as shown by the two-dot chain line in FIG. By adjusting the height between the float 33 and the transmission case 26 through a rotational operation, the planting depth of the seedlings in the field can be arbitrarily set.

To stop planting seedlings when changing direction at the edge of a field or driving on the road,
Seedling planting can be stopped all at once by operating the clutch mechanism 18 provided between the PTO shaft 17 and the front transmission 5 to cut off the power transmission to the seedling planting device 24. 46 by 180 degrees, the clutch 43 is released and the recess 48 in the collar 47 is aligned with the pin 46.
The seedling planting claws 28, 28 at both ends of the claw shaft 27 stop at the raised position.
It is also possible to stop each seedling planting claw 28 for each seedling planting unit.

In this case, the pawl shafts are made into two pawl shafts 27a and 27b separated at the center as shown in FIG. Spring 44a, 44
Clutches 43a, 43b with b are provided respectively, and upper stop mechanisms 49a, 49b are provided with pins 46a, 46b with engagement/disengagement knobs 45a, 45b for each clutch 43a, 43b.
8, 28, each seedling planting claw 28 can be stopped individually, and there is also a safety gap between the drive shaft 35 and the claw shaft 27 in each transmission case 26. By providing the mechanism 41, it is possible to prevent damage to each seedling planting claw 28 due to an excessive load, and it is safe. It goes without saying that other structures may be used.

Note that in the above embodiment, the transmission case 26 is
As shown in the figure and FIG. 11, a case where three rows are arranged in parallel is shown, but the present invention is not limited to this, and as shown in FIG. By arranging two pieces in parallel and inserting the hollow protrusion 62a of the cross-feeding case 62 in the middle of the cylindrical member 55 or 56 that connects them, a four-row structure can be formed, or As shown in FIG. 12, by arranging four transmission cases 26 in parallel and inserting the hollow protrusion 62a of the cross-feeding case 62 in the middle of the cylindrical member 55 or 56 that connects them. , and can be arranged in eight rows.

[Action/effect of the invention]

The present invention, as described in the claims,
The traveling machine is provided with a plurality of transmission cases each having a seedling planting claw, a cylindrical member connecting the respective transmission cases, and a transverse transport case incorporating a transverse transport mechanism for the seedling platform, and A seedling planting device in which a power transmission shaft to each transmission case is inserted into the cylindrical member,
In a multi-row rice transplanter mounted so as to be movable up and down via at least a pair of left and right lower links, a narrow hollow protrusion is integrally formed in the transverse feed case, and the hollow protrusion is It is inserted between the joint between one transmission case of the plurality of transmission cases and the cylindrical member to the one transmission case, or inserted in the middle of the cylindrical member, while being inserted into the hollow protrusion. By providing a power transmission mechanism between the lateral feed mechanism and the power transmission shaft, each transmission case can be made into the same shape, reducing the number of types of parts and reducing manufacturing costs. Since the number of steps required can be reduced, manufacturing costs can be significantly reduced.

Furthermore, by arranging the pivot brackets for the at least one pair of left and right lower links fixed to the cylindrical member, the distance between the pivot brackets can be made wider than the width of the traversing case. Therefore, it is possible to reduce the inclination of the seedling planting device in the left and right direction, and it is also possible to reduce the degree of curvature of the seedling planting device when it is lifted away from the field. This has the effect of reliably reducing the occurrence of curling when the platform reciprocates in the lateral direction.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view of the rice transplanter, FIG. 2 is a plan view of FIG. 1, FIG. 3 is an enlarged sectional view of FIG. 2, and FIG. 3 is a side view of FIG. 5, FIG. 5 is a cross-sectional view of the seedling planting device, FIG. 6 is an enlarged sectional view of FIG. 5, FIG. 7 is an enlarged view of FIG. 5, and FIG. 9 is a cross-sectional view of the upper part stopping mechanism for seedling planting claws, FIG. 9 is another example of the upper stopping mechanism for seedling planting claws, and FIGS. 10, 11, and 12 are diagrams showing the state when the number of rows is changed. be. 1... Traveling body, 10... Front wheel, 11... Rear wheel,
24... Seedling planting device, 25... Seedling planting unit, 26... Transmission case, 28... Seedling planting claw, 29... Control handle,
33... Float, 34... Seedling mounting stand, 61... Traverse feeding device for seedling mounting stand, 62... Traverse feeding case, 62a... Hollow protrusion, 55, 56... Cylindrical member, 57, 58...
Power transmission shaft, 63... Chain as a power transmission mechanism, 87... Lower link, 86... Pivot bracket.

Claims (1)

[Claims] 1. The traveling machine is equipped with a plurality of transmission cases equipped with seedling planting claws, a cylindrical member that connects the transmission cases, and a transverse transport case that incorporates a transverse transport mechanism for the seedling platform, and , a multi-row rice transplanter in which a seedling transplanting device, which is formed by inserting a power transmission shaft to each transmission case into the cylindrical member, is mounted so as to be movable up and down via at least a pair of left and right lower links,
A narrow hollow protrusion is integrally formed on the cross-feeding case, and the hollow protrusion is connected to one transmission case among the plurality of transmission cases and the cylindrical member for the one transmission case. between the junction with,
Alternatively, the cylindrical member is inserted and attached in the middle, and a power transmission mechanism between the lateral feed mechanism and the power transmission shaft is provided in the hollow protrusion, and the cylindrical member is provided with a power transmission mechanism between the lateral feed mechanism and the power transmission shaft. A multi-row rice transplanter characterized in that pivot brackets are fixed to at least a pair of left and right lower links.