JPS5822485Y2 - Multi-row rice transplanter - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a so-called multi-row rice transplanter that simultaneously plants seedlings along multiple rows.

Conventionally, in multi-row rice transplanters for this type of rice, a clutch was installed at the point where the power from the engine was transmitted to the seedling planting device to turn the seedling planting device ON and OFF, so a 4-row rice transplanter could be used to plant 2 rows. When changing the number of planting rows to
On the seedling stand at each seedling claw where seedlings are not planted: The seedling mat must be removed or the seedling mantle must be prevented from falling, which is not only troublesome, but also causes damage to the seedling claw. It is dangerous to idle and also causes a loss of power.

The present invention has a simple configuration that allows the seedling claws to be stopped at the upper position of each transmission case when multiple transmission cases with seedling claws are protruded from a moving aircraft to form multi-row planting. A clutch is provided to prevent damage to the seedling planting claws, and to explain an example drawing in which this is applied to a six-row riding type rice transplanter, 1 in the drawing is the seat 4 front. The figure shows a fuselage consisting of a front fuselage 2 and a rear fuselage 3. Both the front and rear fuselages 2 and 3 are each formed in a hollow mission case, and both have a built-in mission 5゜6, while the rear end of the front fuselage 2 and The front end of the rear fuselage 3 and the vertical axis 7
Both the front and rear fuselage 2 are connected horizontally and bendably through the
, 3 have swing cases 8, 8, and 3 on both left and right sides, respectively.
Wheels 10, 10, 11, and 11 are attached through wheels 9 and 9, and the distance between the front wheels 10.10 and the rear wheels 11.11 is the distance between the front wheels 10.10 and 11.10 for each seedling row spacing 1. is set to be 4, and the ratio between the rear wheels 11 and 11 is set to 2.

The engine 12 attached to the rear end of the rear fuselage 3 is connected to the input shaft 13 of the rear transmission 6, and the output shaft 14 of the transmission 6 is connected to the input shaft 1 of the front transmission 50 via the vertical shaft 7.
5, the output shaft 16 of the front mission 5 transmits power to the PTO shaft 17 protruding from the front of the front body 2.
Power is transmitted from both transmissions 5, 6 to the front and rear axles 10, 10, 11.11, which are connected via a clutch mechanism 18 for N and OFF, respectively, to cause the body 1 to travel.

A nozzle stand 19 is provided at the front of the upper surface of the front fuselage 2,
A steering mechanism 21 of a handle 20 provided on this,
A chain 23 is transmitted between a sprocket 22 mounted concentrically with the vertical shaft 7 on the upper surface of the front end of the rear body 3, and the bending direction and degree of bending of both bodies 2 and 3 are harmonized by rotating the handle 20. The vehicle is configured to be steered by the vehicle.

Reference numeral 24 denotes a seedling planting device located in front of the front body 2. The seedling planting device 24 is composed of three seedling planting units 25 arranged in parallel, and each seedling planting unit 25 has a lateral reverse dog-shaped transmission. A pair of seedling planting claws 28, 28 attached to both ends of the case 26 and a claw shaft 27 pivotally supported at the tip thereof, and a midway portion of the lower surface of the case 26 are rotatable. The bumper 31 has a bendable shape link 32.
It consists of a float 33 which is mounted so as to be vertically movable through the transmission case 26, and a seedling stand 34 which is installed upright on the rear upper surface of the transmission case 26. Inside each transmission case 26, a drive shaft 35 and an intermediate shaft 36 are pivotally supported. The rotation of the drive shaft 35 is controlled by the intermediate shaft 3 using the chino 37.
A chino 40 is wound between the idle sprocket 38 of the intermediate shaft 36 and the idle sprocket 39 on the pawl shaft 27, and the power transmitted to the pawl shaft 27 is constant on the intermediate shaft 36. A safety clutch mechanism 41 is provided which automatically cuts off power transmission if the situation exceeds the limit.

Furthermore, a clutch 4 is attached to the pawl shaft 27 at the front of the transmission case 26.
3, the clutch 43 is configured to be slidable by the sliding key 42, and a spring 44 is provided that biases the clutch 43 so that it always meshes with the idler sprocket 39. Pin 4 with knob 45 on part 26
6 is provided to pass through the claw shaft 27 in a direction approximately perpendicular to the nail shaft 27, and the tip of the pin 46 is notched in a step-like semicircular shape, with one side being a high protruding semicircular part 46' and the other being a low notched semicircular part. The tip of the pin 46 faces the flange 47 on the outer periphery of the flange 43, and when the pin 46 rotates 180°, the protruding semicircular portion 46' at the tip of the pin 46 presses the end surface of the flange 47, and the clutch 43 is rotated. The structure is such that the clutch 43 and the idle sprocket 39 are disengaged by sliding toward the right side of the pawl shaft 27 in FIG. The protruding semicircular part 46' is fitted into the seedling planting claw 2.
8.28 is provided with an upper stop mechanism 49 that stops at the upper position.

Flange portions 50 and 51 are formed on both left and right sides of the rear end of each of the transmission cases 26, and both ends of the drive shaft 350 are attached to the flanges s.
o and si protrude from the center of the case, one end of which is formed into a screw shaft 52, and the other end is formed into a removable connection part of a circular shaft 53, and each seedling planting unit 25 is connected to its respective transmission case. The port 54 is connected to the flange 50.51 on the side of the 26 by a cylindrical member 55.56, and both ends of the hollow shafts 57, 58 inserted into the cylindrical member 55.56 are connected to the threaded shaft of each drive shaft 35. The drive shafts 35, 35.35 are connected in a line by connecting the drive shafts 35, 35. Input shaft 6 transmitting power via bevel gear pair 59
0 is supported.

Reference numeral 61 denotes a transverse feed mechanism for the seedling stand, whose case 62 is mounted between the flange 51 of the central transmission case 26 and the cylindrical member 56. A feed shaft 66 that transmits power to the camshaft 65 and is slidable is provided parallel to the camshaft 65.

The feed shaft 66 is transversely fed in the left and right direction by the rotation of the camshaft 65 with its boat-shaped key 67 engaged with the reciprocating spiral groove 68 of the camshaft 65, and at the right and left ends of the transverse movement, the camshaft It is configured to contact the upper fixed cam 69, 69 and to swing and rotate intermittently.

In addition, a long guide rail 70 with a cross section is attached to the upper surface of the transmission case 26 in each seedling planting unit 25, 25, 25 via a metal fitting 72 at the square part 71 of the eldest side edge. Each of the seedling planting nails 2 is attached to the rail TO.
Notches are formed at every eight locations to take out seedlings, and the transmission case 26 is located on the outside.
An arm 74.74 having a trochanter 73 at its tip is attached to the arm 51.

The seedling stands 34 in each of the seedling planting units are connected by U-shaped cross-sectional rails 75° 76 extending along the upper and lower sides of the rear surfaces thereof, and the lower rail 75 is connected to the square portion 7 of the guide rail 70.
1, the upper rail 76 is fitted and engaged with the trochanter 73 at the tips of both arms 74, 74 so as to be movable in the lateral direction; The rail 76 is held in place by a pin 78 which is removably inserted into the rail 76.

Both ends of the feed shaft 66 are connected to the back surface of the seedling platform 34 via brackets 79, 79, and seedling mantle feed wheels 80 protruding from the top surface of the seedling platform 34 are provided at appropriate intervals. A shaft 81 is attached via a bearing 82,
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, and the one-way clutch 83 is oscillated by the feed shaft 66. Therefore, the vertical feed shaft 81 is configured to be rotated intermittently one pitch at a time.

The seedling planting device 24 configured in this way has a cylindrical member 5
A pair of lower links 87, 87 connected to mounting pieces 86° 86 attached to the rear ends of 5, 56, and a mast 88, which is erected from a cylindrical member 55, 56, etc. along the back surface of the seedling stand 34.
At the top link 89 connected to the tip of 88, the front fuselage 2
The lower link 8
The input shaft 60 is configured to move up and down significantly from the front body 2 side by rotating the lift arm 90 that engages with the PTO shaft 17. Power is transmitted through the

In addition, a tube nest bumper 31 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 connected to the tip of the transmission case 26, so that each seedling planting unit are connected to each other by the bumper 31, and side bumpers 93, 93 are provided on both left and right sides of the seedling planting device 24.
One end of the bumper 31 is attached to one end of the bumper 31, and the other end is detachably attached to one end of the seedling platform guide rail 70.

In this configuration, an operator sits on the seat 4 and the seedling planting device 2
4 is lowered until each float 33 touches the field, and then the machine 1 moves forward. The seedling planting device 24 slides with each float 33 touching the field, and the PTO axis of the machine 1 moves forward. The power transmitted from 17 to the input shaft 60 is transmitted from each drive shaft 35, 35, 35 connected in a row to the seedling planting claws 28, 28 of each seedling planting unit 25, 25, 25. While driving, from the drive shaft 35 to the camshaft 6
5 and to which the feed shaft 66 is attached, each seedling stand 34,
34, 34 are horizontally fed at once, and at the same time, the vertical feed shaft 8
1 is intermittently rotated one by one at the right end or left end of the horizontal feed, so each seedling planting claw 28 in each seedling planting unit 25, 25, 25 swings up and down in the field scene, and each seedling planting claw 28, the seedlings are divided into one seedling from each seedling outlet, and the seedlings on each seedling stand 34 are separated into multiple rows (one seed at a time).
In this embodiment, the seedlings are planted along the rows (6 rows) (in this case, the depth of planting the seedlings in the field is determined by rotating the link 30 with the handle 29 for attaching the float 33 to the transmission case 26. (can be set arbitrarily by adjusting the height between the float 33 and the transmission case 26), and stopping the planting of seedlings when changing direction at the edge of a field or driving on the road. To do so, P.T.
By operating the clutch mechanism 18 provided between the O-axis 17 and the front transmission 5 and cutting off the power transmission to the seedling planting device 24, seedling planting can be stopped all at once, and each seedling planting unit ) If the pin 46 with the knob 45 in 25, 25, 25 is rotated 1800 times, the claw shaft 2 in each transmission case 26 will be rotated 1800 times.
7, the protruding semicircular portion 46' at the tip of the pin 46 presses the end surface of the collar 47, causing the clutch 43 to slide, and the idle sprocket 39 and clutch 43 are disengaged, cutting off power transmission to the pawl shaft 27. However, the seedling planting claws 28, 2B can be stopped for each seedling planting unit.

In this case, if a rest 48 is formed in the flange 47 of the clutch 43, the rest 48 on the flange 47 will stop at the position where it engages with the pin 46, so the rest 48 can be used to raise the seedling planting claw. By providing the seedling planting claws 28, 2 at both ends of the claw shaft 27,
8 can be stopped in the raised position. Therefore, each seedling planting claw 28 does not stop in contact with the seedling take-out port in the guide rail 70 or the field surface, and the seedling mounting stand 34 and the seedling planting claw 28 can be stopped in the raised position. It cannot be damaged.

As shown in FIG. 9, the pawl shafts are two pawl shafts 27a and 27b separated at the center, and an idling sprocket 39 is provided across the tips of the pawl shafts 27a and 27b.

27b has a spring 44a and a clutch 43a with 44b.

43b, and a resting place 48a for both clutches.

Each clutch 4 is provided with flanges 47a and 47b with 48b attached.
A knob 45a for engaging and disengaging each 3a and 43b.

Pins 46a and 46b with 45b are provided, and each pin 46a
, 46b are provided with semicircular portions 46a', 46b' at the tips of the upper stop mechanisms 49a, 49b, respectively.
If you set one for each 8.2B, each seedling planting nail 28
In other words, the present invention can be applied to such cases as well.
By providing a safety mechanism 41 between the drive shaft 35 and the claw shaft 27 in each seedling planting unit, it is possible to prevent the claws from being damaged due to excessive load on each seedling planting claw 28, making it safe. Mechanism 18, upper stop mechanism 49° 49a, 49
It goes without saying that b and the safety mechanism 41 may have a structure other than that shown.

In addition, in the above embodiment, each seedling platform is connected and the feeding operation is performed by one feeding mechanism 61, but each seedling platform is separated into each seedling planting unit, and the feeding mechanism is operated separately for each seedling planting unit. It may be provided for each planting unit.

In summary, the present invention provides a plurality of transmission cases on a traveling machine body at appropriate intervals in a direction perpendicular to the traveling direction of the traveling machine body, and a power transmission shaft pivotally supported by each transmission case is used to control the field area and the seedling stand. In a rice transplanter each provided with a seedling planting claw that swings up and down between a seedling take-out port, the power transmission shaft in each transmission case is biased toward a drive-side power transmission wheel that is loosely fitted therein. While the clutch is slidably inserted, a pin that is rotatably operated from outside the case is inserted into the transmission case in a direction substantially perpendicular to the power transmission shaft, and the tip of the pin is formed into a semicircular part. This is placed on the end face of the clutch so that the clutch slides when the pin rotates, and a rest is provided on the end face of the clutch into which the tip of the pin fits when the seedling planting claw comes to the roadside position. Simply attach pin 4 without removing the transmission case.
By simply rotating 6 by 180', you can easily stop the movement of the seedling claws for each transmission case, so the only thing that stops is the seedling claw part of the case where the clutch is released. The horizontal feeding mechanism, vertical feeding mechanism for seedlings, and other seedling planting claws of the transmission case operate normally, so seedlings can be planted in those areas. It is possible to plant seedlings in that area by operating the chisel, and the spacing and number of seedling planting rows can be easily changed, and when changing the number or spacing of rows, unnecessary seedling planting claws do not stop and spin idly. In addition, in order to stop the seedling claw at the upper position, it is only necessary to form a rest at a predetermined position of the clutch, so the structure is extremely simple and all that is required is to rotate the operating pin 46. The clutch OFF operation and the upper position stop operation can be performed at the same time, and the operation is easy.

In addition, this mechanism prevents the seedling planting claw from stopping when it is in contact with the field or when it is stuck in the seedling outlet, and does not shift to such a position due to vibration, so the seedling planting claw that has been stopped will not be stopped. It has the effect of not causing damage.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view of the rice transplanter, FIG. 2 is a plan view of FIG. 3 is a ■-IV view of FIG. 3, FIG. 5 is a cross-sectional view of the seedling planting device, FIG. 6 is a VI-VI enlarged sectional view of FIG. 5, and FIG. 7 is a ■-■ of FIG. An enlarged view, FIG. 8 is a cross-sectional view of the upper stop mechanism for seedling planting claws, FIG. 9 is an alternative view of FIG. 8, and FIGS. 10, 11, and 12 are states when the number of rows is changed. FIG. 1... Airframe, 10, 10... Front wheel, 1
1, 11... Rear wheel, 24... Seedling planting device, 25... Seedling planting unit, 26... Transmission case, 28... Seedling planting claw, 33...Float, 34...Seedling stand, 43...Clutch, 45...Knob, 46...Pin .

Claims (1)

[Scope of utility model registration request] A plurality of transmission cases are installed on the traveling body at appropriate intervals in a direction perpendicular to the traveling direction of the traveling body, and the power transmission shaft supported by each transmission case is used to move vertically between the field surface and the seedling outlet of the seedling stand. In a rice transplanter equipped with swinging seedling planting claws, the power transmission shaft in each of the transmission cases includes a clutch biased to mesh with a side surface of a drive-side power transmission wheel loosely fitted to the power transmission shaft. A pin is inserted into the transmission case so as to be non-rotatable and slidable in the axial direction, while a pin that is rotated from outside the case is inserted in a direction approximately perpendicular to the power transmission shaft, and the tip of this pin is inserted into the transmission case in a direction substantially perpendicular to the power transmission shaft. is shaped into a semicircular part, and the semicircular part at the tip of the pin is exposed to the end face of the clutch so that the clutch slides when the pin rotates, and the seedling is placed on the end face of the clutch. A multi-row rice transplanter comprising a recess into which the tip of the pin fits when the claw reaches the roadside position.