JPH0711545Y2 - Seedling mat vertical feed clutch device on seedling mounting table - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is applicable to a riding type or a walking type rice transplanter configured to vertically feed a seedling mat on a seedling mounting table that is inclined. The present invention relates to the structure of a vertical feed clutch device for turning on / off the vertical feed operation of the seedling mat of.

[Conventional technology]

Conventionally, in riding type and walking type multi-row planting rice planters,
The seedling mats placed in parallel on the seedling table are divided by the planting rod of the planting mechanism from the lower end of the seedling table, while laterally feeding the slanted seedling table at an appropriate speed. Meanwhile, seedlings are being planted in the field.

In that case, a vertical feeding device for forcibly feeding the seedling mat vertically to the lower end side of the seedling mounting table by an appropriate size is provided on the rear surface side of the seedling mounting table at the lateral feeding end portion of the seedling mounting table.

The rotary longitudinal feeder in this vertical feeding device is in a state of biting into the back surface of the seedling mat, and the rotary longitudinal feeder is attached to the vertical feeding shaft arranged on the back surface of the seedling mounting table. It is forcibly driven intermittently in a fixed direction at the lateral feed end position.

By the way, in a multi-row planting machine, the number of planting rows may be reduced at the edge of the row to perform rice planting work.However, the drive of the seedling mechanism at that location is stopped and the seedling mat at that location is stopped. It is necessary to stop the vertical feed action of.

As a configuration for that purpose, the present applicant previously filed Japanese Utility Model Application No. Sho 61-17765.
In No. 6, a plurality of rotary shafts equipped with a vertical feed unit for longitudinally feeding one or two seedling mats placed on the left and right sides of the seedling placing table are arranged in a row in the lateral direction of the seedling placing table. Arranged in a
The vertical feed shaft that is rotatably inserted in these rotary shafts is configured to rotate intermittently when the horizontal feed end position of the seedling table is reached, and gears are provided on the vertical feed shaft and the side end of the rotary shaft. A longitudinal feed clutch device has been proposed which is provided in parallel and is configured to mesh with or separate from the both gears across the clutch gear.

[Problems to be solved by the invention]

Since this vertical feed clutch device connects intermittent rotation force from one vertical feed shaft to one rotary shaft by connecting and disconnecting three gears with each other, the pair of left and right rotary shafts is connected to each other. At the same time, a total of four gears are required to connect and disconnect the intermittent rotation, which causes a problem that the longitudinal feed clutch device becomes extremely long in the longitudinal direction of the longitudinal feed shaft, and the clutch gears must be turned to the clutch OFF state. All of the gears had to be rotated in a direction away from the outer circumference, and the rotation operation mechanism of the clutch gears on the back surface of the seedling mounting table was bulky, which in turn increased the size of the vertical feed clutch device.

An object of the present invention is to solve these problems and to provide a compact vertical feed clutch device.

[Means for solving problems]

For this reason, in the present invention, a vertical feeding shaft that is intermittently rotated by a vertical feeding mechanism is provided at the lateral movement end of the seedling mounting table, which is disposed on the rear surface of the seedling mounting table that is horizontally reciprocally movable in the left-right direction of the traveling machine body. Then, each of the pair of rotary shafts rotatably fitted to the vertical feed shaft is equipped with a rotary vertical feed body for vertically feeding the seedling mat, and between the shaft ends of the pair of rotary shafts, A drive-side clutch body that rotates integrally with the vertical feed shaft is provided, and a pair of left and right driven-side clutch bodies that are biased in the direction of joining to the side surface of the drive-side clutch body are provided at the shaft ends of the left and right rotation shafts. One of the inner wires is attached to one shift lever so that the pair of left and right shift levers that move the left and right driven clutch bodies in the clutch OFF direction rotate in opposite directions. , Fit the inner wire on the other shift lever It is obtained by the respectively connected with the structures at one end of the guide tube.

[Operation and effect of device]

According to this structure, the pair of driven clutch bodies located on the left and right sides of the drive clutch body that rotates integrally with the intermittently rotating vertical feed shaft are rotated by rotating the pair of left and right shift levers in opposite directions. , Because it slides in the axial direction of the rotary shaft, the rotation direction of the pair of left and right shift levers is
It can be made almost parallel to the back surface of the seedling stand, and the mechanism for ON / OFF operation of the vertical feed clutch does not become bulky.

One shift lever is connected to the inner wire, and the other shift lever is connected to the guide tube.
The vertical feed operation of two rotating shafts, and thus the two seedling mats adjacent to each other on the left and right sides can be interrupted at the same time, and the mechanism for operating the vertical feed clutch device becomes extremely simple.

Therefore, according to the present invention, the longitudinal feed clutch device can be made compact as a whole.

〔Example〕

Hereinafter, an embodiment applied to a riding type rice transplanter will be described. In the figure, reference numeral 1 denotes a traveling machine body, and the traveling machine body 1 has front body wheels 2 mounted on a body frame 2 and a front lower surface thereof, and rear rear body lower surfaces. It consists of rear wheels 5 and 5 that are mounted via axle cases 4 and 4,
A control seat 6 and a control handle 7 are provided on the upper surface of the body frame 2.
And a power transmission case 10 with a continuously variable transmission mechanism 11 is provided on the vehicle body frame 2 in front of the axle 9 of the rear wheel 5, and the power transmission is performed by the driving force of the engine 8 on the upper front surface of the vehicle body frame 2. The rear wheels 5 are driven via the power transmission mechanism in the sub-case 10 and the axle cases 4, 4, and the front wheels 3 are driven via the propulsion shaft 12.

Reference numeral 13 denotes a seedling planting device that is vertically mounted on the rear part of the traveling machine body 1 via a parallel link mechanism 14, and the parallel link mechanism 14 is mounted on the vehicle body frame 2 by a hydraulic cylinder 15.
The seedling planting device 13 is largely moved up and down via the.

The parallel link mechanism (14) consisting of one top link (24) and a pair of lower links (25) is attached to the transmission case (16) via the hitch body (26) in the seedling planting device (13).

The seedling planting device 13 includes a transmission case 16 and the transmission case 16
Located on the lower surface of the central planted transmission case 17, and the planted transmission cases 19 and 19 that are mounted at appropriate intervals via the central planted transmission case 17 mounted on one side and the connecting pipe 18 in which the transmission shaft is inserted. The center float (20), the floats (21, 21) arranged on the lower surface of each planted transmission case (19), and the seedling mounting table (22) inclined so that the upper end approaches the traveling machine body.

From the PTO shaft projecting from the rear end of the power transmission case 10 to the transmission mechanism in the central planted transmission case 17 via the input shaft 36 of the transmission case 16 via the expandable shaft 35, and the connecting pipe 18
Power is transmitted to each of the transmission mechanisms inside the planted transmission cases 19 and 19 on both the left and right sides through the transmission shafts inside the planted transmission cases 17 and 19.
The rotary type planting mechanism 23 mounted on both the left and right sides of the rotary drive is driven to rotate, and the pair of two planting rods 23a in the rotary type planting mechanism 23 rotate vertically while keeping substantially the same posture, and the seedling table. 22 The seedling take-out plate 31 at the lower end side reciprocates between the seedling take-out port and the field scene (see the locus shown by the chain double-dashed line in FIG. 3), and the seedlings at the lower end of the seedling table 22 are moved by the respective rods 23a. The seedlings divided from the take-out plate 31 are configured to be planted in a field scene.

On the other hand, a pillar 27 in which an upper rail in the middle of the back surface of the seedling mounting table 22 is erected from the front ends of the planted transmission cases 19 and 19 on the left and right sides.
A lower rail 30 fitted to the trochanter at the upper end and attached to the lower end of the seedling placing table 22 is fitted to the slider 28 protruding from each planting transmission case, and configured to be able to reciprocate left and right by the lateral feed means. .

In addition, the seedling mounting table 22 is provided between the upper surfaces of the planted transmission cases 17, 19.
The seedling pick-up plate 31 is installed in parallel with the lower rail 30 that is attached to the lower end of the plant, and the support plate 32 that is attached to the seedling pick-up plate 31 is slidable vertically on the side surface of each planted transmission case 17, 19. Attached to
By adjusting the distance between the support plate 32 and the lower end of the seedling table 22 which can be moved only horizontally by moving the support plate 32 up and down via the operating rod 33 with a crank, the vertical amount of the seedling mat on the seedling table 22 can be adjusted. To do.

A transmission case that is arranged in parallel with the connecting pipe 18
The lateral feed shaft 43 disposed outside 16 has one end pivotally supported in the transmission case 16 so as to be rotated by a speed change mechanism including a key shift type gear train in the transmission case 16, and the other end of the lateral feed shaft 43. Is supported by a plate-like support arm projecting from the other end of the connecting pipe 18 or the base of the planted transmission case 19, and a slider provided with a boat-shaped key that engages with a reciprocating screw groove formed in the transverse feed shaft 43. 48
In addition, a triangular bracket 50 fixed to a lower rail 30 at the lower end of the rear surface of the seedling mounting table 22 is detachably connected via screws or the like, and the seedling mounting table is synchronized with the rotation of the rotary type planting mechanism 23. 22 is horizontally fed back and forth.

Then, the outer circumference of the lateral feed shaft 43 that is projected from the side surface of the transmission case 16 and is exposed to the outside is defined by the left and right side portions of the slider 48 and the transmission case.
It is configured to be covered by a stretchable bellows type cover made of rubber or the like which is arranged between the side surface of 16 and the side surface of the plate-like support arm.

Further, feed cams 54, 54 are provided at both left and right ends of a shaft 53 rotatably mounted on the transmission case 16 so that the shaft 5 can be moved in the transmission case 16.
The cam to be attached to 3 is configured to reciprocally rotate by a certain angle by the rotation of the cam at the end of the horizontal feed shaft 43, while the vertical feed shaft 58 is rotatably supported on the lower part of the rear surface of the seedling placing table 22. The shaft 58 is provided with a driven cam 59 with a one-way rotation clutch that intermittently rotates this in one direction only by one pitch, and the one feed cam 54 is connected to the driven cam 59 at both lateral feed left and right ends of the seedling mounting table. The vertical feed shaft 58 is intermittently rotated by pressing the contact feed.

The rotary shaft 60 loosely fitted to the vertical shaft 58 and the rotary shaft 60 arranged at the upper position of the seedling mounting table are respectively fitted with rotary longitudinal members 61,
By rotating synchronously with a belt 63 wound around both shafts 60, 60 via a pulley 62, the seedling mat on the seedling mounting table 22 is rotated by each of the rotary longitudinal members 61 and the seedling take-out plate 31 at the lower end. It is configured to feed in the vertical direction.

That is, on the rear surface side of the seedling mounting table 22 for 6-row planting, there is a rotary vertical feeder 61 for vertically feeding seedling mats corresponding to the planting mechanisms 23, 23 on the left and right sides of each planting transmission case. The cylindrical rotating shafts 60, 60 having a pair of upper and lower outer peripheral hexagonal inner diameter circular holes in three rows arranged to be fitted are configured to integrally rotate via the winding belt 63 at appropriate places (fourth The vertical feed shaft 58 is loosely fitted in the lower rotary shaft 60, and a vertical feed clutch device 65 is provided between the vertical feed shaft 58 and the lower rotary shaft 60.

In the embodiment shown in FIG. 4, the left two rows of seedling mat groups and the center 2
The seedling mats in the row are connected to each other by turning on and off the pair of vertical feed clutch devices 65 at the left side at the same time. By simultaneously turning on and off the feed clutch device 65, the vertical feed action is interrupted all at once.

By rotating the shift lever 66 associated with the pair of vertical feed clutch devices 65, the three rows of vertical rotation shafts 60, 60 are rotated.
The rotation of each row is turned ON / OFF, and each shift lever 66 is connected to an operation lever 67 on the rear surface of the seedling stand 22 via an inner wire 68.

Note that reference numeral 69 indicates a vertically long rib extending from the upper end to the lower end of the seedling placing table 22 in order to divide the placement places of the seedling mats placed in parallel on the surface of the seedling placing table 22.

Reference numeral 70 is a brake device for preventing the rotating shaft 60 in the upper position from idling.

The longitudinal feed clutch device 65 includes a driven side clutch body 71 slidably fitted only on the outer circumference of the end portion of the hexagonal section rotating shaft 60 at the lower position only in the axial direction, and a circular inner diameter portion of the rotating shaft 60. A drive-side clutch body 73 fixed by a pin 72 or the like so as to rotate integrally with a rotatably-inserted vertical feed shaft 58, and a shaft support that covers the outer circumference of the drive-side clutch body 73 and can be split in two And a shift lever for connecting and disconnecting the driven side clutch body 71 with respect to the drive side clutch body 73.
It consists of 66 and.

The longitudinal feed clutch device shown in FIG. 6 has two rotary shafts 60,6.
It is provided between 0 and the intermittent rotation force from the vertical feed shaft 58 is simultaneously disconnected to both the left and right rotary shafts, and therefore, the left and right side surfaces of the substantially cylindrical drive side clutch body 73 are engaged with each other. Part 73
While a is formed radially, on the left and right sides of the drive side clutch body 73, meshing claw portions 71a that mesh with the meshing claw portions 73a, respectively.
The driven side clutch bodies 71, 71 each having the above are disposed, and each driven side clutch body 71 has a biasing spring 78 whose one end is abutted against the brim 77 engaged by a stop ring 76 or the like on the outer circumference of each rotating shaft 60. Thus, the drive-side clutch body 73 is always pressed and urged.

In FIG. 6, the vertical feed shaft 58 is not inserted in the inner diameter portion of one of the rotary shafts 60, but there is no problem even if the vertical feed shaft is provided.

Then, as shown in FIGS. 6 and 7, the bearing 74 has a projection 80 on the inner periphery thereof fitted into an outer peripheral groove 79 of the driving side clutch body 73 so that the driving side clutch body 73 is displaced in the axial direction. The bearing 74 has a length that covers the outer circumference of the drive-side clutch body 73 and that the drive-side clutch body is supported.
73 and the left and right driven side clutch bodies 71, 71
Is formed long so as to cover the outer peripheral portion of the.

Further, a pair of left and right shift levers 66, 66 each of which has a midway portion rotatably supported by a shaft 81 is fitted at its tip into an annular shift groove 82 in both driven side clutch bodies 71, 71, so that one shift lever 66 Is connected to one end of the inner wire 68 for operation, the other shift lever 66 is connected to one end of a guide tube 84 for guiding the inner wire 68 via a bracket 85, and is mounted on the rear surface of the seedling table 22 at an appropriate position. When the inner wire 68 is pulled by the operating lever 67, both shift levers 66, 66 simultaneously rotate in opposite directions, and the pair of driven-side clutch bodies 71, 71 resists the force of the biasing spring 78 to drive-side clutch body. It is possible to break the intermittent rotation action of the vertical feed shaft 58 apart from 73.

Reference numeral 87 is a bush that is inserted between the circular inner diameter of the rotary shaft 60 and the outer circumference of the vertical feed shaft 58 having the same circular cross section.

In this configuration, at the time of rice planting work, while placing the seedling mat on the surface of the seedling placing table 22, while the seedling planting device 13 is moved downward by driving the hydraulic cylinder 15, the floats 21, 20, 21 are grounded in the field. When the wheels 3 and 5 are driven, the aircraft moves straight, and by driving the planting mechanism 23, the seedling mats on the seedling mounting table 22 that are fed laterally are divided into seedlings one by one, and a plurality of rows are set in the field. Seedlings can be planted along the line (6 in this embodiment).

Then, in the ON state of the vertical feed clutch device 65,
At the end of the lateral movement of the seedling placing table 22, the driven cam 59 pressed by the feeding cam 54 rotates by a certain angle to the lower side via the vertical feeding shaft 58, the driving side clutch body 73, and the driven side clutch body 71. Rotating shaft 60
Rotates a certain angle, and the upper rotary shaft is
Each of the 60 also rotates by a certain angle, and the seedling mat is forcibly fed vertically to the lower end of the seedling mounting table 22 via the rotary longitudinal feeder 61.

Then, in order to reduce the number of seedlings to be planted at the edge of the ridge, etc., while stopping the drive of the planting mechanism 23 corresponding to the appropriate number of seedling mat locations at the left end or the right end of the seedling mounting table 22, while corresponding to that location Turn off the pair of vertical feed clutch devices 65, 65 all at once
Rotate one operating lever 67 to adjust the inner wire 68
When the pair of shift levers 66, 66 are pulled, the position where one end of the inner wire 68 is connected and the position where one end of the guide tube 84 fitted to the inner wire 68 is connected are relatively close to each other. Becomes a pair of shift levers 6
6, 66 rotate in opposite directions, and the pair of driven clutch bodies 71, 71 facing each other are separated from the side surface of the drive side clutch body 73 against the force of the biasing springs 78, 78, respectively. It is possible to interrupt the intermittent rotation action from the feeding shaft 58 and forcibly stop the vertical feeding of the seedling mat.

In this case, the pair of shift levers 66, 66 can be turned on and off by a single guide tube with an inner wire, and the pair of shift levers 66, 66 can be arranged on the back surface of the seedling table 22 in a substantially parallel shape. Therefore, the entire vertical feed clutch device can be made compact.

When the longitudinal feed clutch device 65 is in the OFF state, the rotary shaft 60 may rotate idly, but the brake device
By providing 70, it is possible to prevent the seedling mat, which engages with the vertical feeding body 61 fitted on the rotary shaft 60, from inadvertently sliding to the lower end side of the inclined seedling placing table 22. The present invention can be applied to the case where the planting mechanism 23 is not a rotary type but a vertically swinging type planting mechanism. It goes without saying that it can also be applied to machines.

[Brief description of drawings]

Drawing shows an embodiment of the present invention, Fig. 1 is a side view of a rice transplanter, Fig. 2 is a plan view, Fig. 3 is an enlarged sectional view taken along line III-III of Fig. 2, and Fig. 4 is a seedling mat. Vertical feed power transmission system diagram,
Fig. 5 is a partially cutaway plan view of the seedling mounting table, Fig. 6 is a partially cutaway plan view of the longitudinal feed clutch device, and Fig. 7 is VII- of Fig. 6.
VII is a partially cutaway sectional view, and FIG. 8 is a partially notched sectional view of the rotary longitudinal feeder shown in FIG. 6 taken along line VII-VII. 1 ... traveling body, 2 ... body frame, 3,5 ... wheels,
8 ... Engine, 13 ... Seedling planting device, 14 ... Parallel link mechanism, 15 ... Hydraulic cylinder, 16 ... Transmission case, 17 ... Central planting transmission case, 19 ... Planting transmission case, 18 ... … Connection pipe, 22 …… Seedling stand, 23 …… Planting mechanism, 31 …… Seedling take-out plate, 36 …… Input axis, 43 …… Horizontal feed axis, 58 …… Vertical feed axis, 60
…… Rotary axis, 61 …… Rotary longitudinal feeder, 63 …… Wrapping belt,
62 …… Pulley, 54 …… Feed cam, 59 …… Following cam, 65…
… Vertical feed clutch device, 66,66 …… Shift lever, 67…
… Operating lever, 68 …… Inner wire, 70 …… Brake device, 71 …… Driven side clutch body, 73 …… Drive side clutch body, 71a, 73a …… Mating claw part, 74 …… Bearing, 76 …… Stop ring , 77 …… Tsuba, 78 …… Biasing spring, 79 …… Recessed groove, 80 ……
Protrusion, 81 …… Axis, 82 …… Shift groove, 84 …… Guide tube.

Claims (1)

[Scope of utility model registration request] 1. A vertical feeding shaft, which is intermittently rotated by a vertical feeding mechanism at a laterally moving end of the seedling placing table, is provided on the back surface of the seedling placing table which is horizontally reciprocally movable in the left-right direction of the traveling machine body. The pair of rotary shafts rotatably fitted to the vertical feed shafts are respectively equipped with rotary vertical feed bodies for vertically feeding the seedling mat, and between the shaft ends of the pair of rotary shafts, the vertical A drive side clutch body that rotates integrally with the feed shaft is provided, and a pair of left and right driven side clutch bodies that are biased in the direction of joining to the side surfaces of the drive side clutch body are provided at the shaft ends of the left and right rotating shafts. Sliding only in the axial direction, the left and right driven clutches are clutch off
One shift lever is connected to one end of the inner wire, and the other shift lever is connected to one end of a guide tube fitted to the inner wire so that the pair of left and right shift levers to be moved in the opposite directions rotate in opposite directions. The seedling mat vertical feed clutch device on the seedling mounting table characterized by the above.