JPH0243447B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention provides a rice transplanter that reciprocates the seedling platform horizontally in the left and right direction and feeds the seedling mats on the seedling platform vertically. This relates to a drive device for.

[Conventional technology and its problems]

Conventional rice transplanters have a horizontal feed shaft that reciprocates the seedling table horizontally in the left and right direction, and a vertical feed shaft that is equipped with a vertical feed drive cam to vertically feed the seedling mats on the seedling table. Because they were configured separately,
Its structure was complex and heavy.

Therefore, Japanese Utility Model Application Publication No. 53-87220 as a prior art discloses that by providing the vertical feed drive cams at both ends of the horizontal feed shaft, there is only one shaft for driving the seedling stand, and the structure is improved. It is proposed to simplify and reduce weight.

However, in this prior art, both ends of a horizontal feed shaft pivotally supported by a support member such as a frame protrude outward from the support member such as the frame, and the vertical feed drive cam is attached to both projecting ends. The two longitudinal drive cams are exposed on both the left and right sides of the rice transplanter, so when the rice transplanter approaches the ridge, the two longitudinal drive cams There is a high risk of damage due to grass, etc. wrapping around the ridges or the double vertical feed drive cams coming into contact with the ridges.Furthermore, there is a danger that workers may come into contact with the double vertical feed drive cams and be injured. It was also big.

In the case where the present invention provides vertical feed drive cams at both ends of the horizontal feed shaft for the seedling stand,
The object of the present invention is to improve the safety of the both longitudinal feed drive cams without complicating the structure.

[Means to solve the problem]

Therefore, in the present invention, a rearward-tiling seedling stand and a control handle extending rearward are provided at the rear of a vehicle body frame equipped with a pair of left and right floats, and the seedling stand is provided on the back side of the seedling stand. A rice transplanter comprising a horizontal feed shaft for horizontally feeding the table from side to side, and vertical feed drive cams fixed to both left and right ends of the horizontal feed shaft for vertically feeding the seedling mats on the seedling platform. In the machine, a support member extending rearward from the vehicle body frame is disposed outside the both longitudinal feed drive cams, and both ends of the transverse feed shaft are pivotally supported by the support members. Both floats are arranged below the support member.

[Action/effect of the invention]

With this configuration, the outside of both vertical feed drive cams fixed to both ends of the horizontal feed shaft is surrounded by a support member that pivotally supports the feed shaft, while the lower side of both vertical feed drive cams is Of course, the upper part of both vertical feed drive cams is surrounded by a seedling stand. In other words, the three sides of both longitudinal drive drive cams, outward, downward, and upper, are surrounded by a float. This can be reliably guarded by the three essential components of the rice transplanter: the support member for the transverse feed shaft, the float, and the seedling stand.

Therefore, according to the present invention, if the operator touches the vertical feed drive cams provided at both ends of the horizontal feed shaft,
Or, the grass etc. in the ridges may become entwined, and
The essential components of the rice transplanter can reliably prevent the two vertical feed drives from coming into contact with the ridges, etc. Therefore, by providing separate guards for the two vertical feed drive cams, the structure of the rice transplanter can be prevented from becoming complicated. This has the effect of improving safety for both longitudinal feed drive cams without causing an increase in weight.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. In the drawings, reference numeral 1 denotes a body frame of a rice transplanter. A traveling transmission case 6 formed integrally with the transmission case 3, which is configured in a U-shape in plan with a pair of left and right hollow side frames 4 and 5 extending rearward from both ends.
The front end of a swing case 7, which is arranged to extend rearward between the side frames 4 and 5, is rotatably attached to the front end of the swing case 7. A running wheel 8 located on the center line of the frame 1 is provided, and this running wheel 8
is the transmission from the engine 2 to the traveling transmission case 6.
The swing case 7 is rotated via a chain (not shown) in the swing case 7.

Seedling planting cases 9 and 10 are fixed to the rear ends of both side frames 4 and 5, respectively, and the two seedling planting cases 9 and 10 are connected to each other by a gate-shaped connecting frame 11. A wheel lifting device 12 is provided between the gate-shaped connecting frame 11 and the swing case 7, and by moving the wheels 8 up and down, the entire rice transplanter can be moved up and down.

Reference numerals 13 and 14 refer to both seedling planting cases 9 and 1.
A pair of left and right operating handles are shown extending rearward from the rice transplanter, and both operating handles 13 and 14 are bent obliquely upward toward the rear of the rice transplanter. A rear-tilting seedling stand 17 supported movably in left and right lateral directions by a guide rail 15 and a rail mechanism 16 mounted horizontally and laterally is provided between the seedling stands 17.
Both handles 13 and 14 on the back side of the
Bearings 20, 21 are fixed respectively, and both bearings 20,
21 pivotally supports both ends of a transverse feed shaft 18 which has a reciprocating screw groove 19 on its outer periphery and extends parallel to the moving direction of the seedling platform 17. Note that in this example,
Both handles 13 and 14 are connected to the horizontal feed shaft 18.
It also serves as a support member for both ends of.

The boss body 22 that is slidably fitted on the transverse feed shaft 18 is provided with a boat-shaped key 23 that engages with the reciprocating screw groove 19 on the outer periphery of the boss body 22. By inserting the piece 46 into a cylindrical support 47 attached to the back surface of the seedling platform 17 and relating it to the seedling platform 17, the seedling platform 17 is moved by rotation of the transverse feed shaft 18 in the direction of arrow A. It is configured to reciprocate and traverse in the left and right direction. In this case, the cylindrical receiver 47 has the engaging piece 46 inserted therein.
A pair of left and right adjusting screws 48 and 49 are provided to sandwich the same from both the left and right sides, so that the relative position of the sliding boss body 22 and the seedling stand 17 in the left and right direction can be freely adjusted.

Further, at both ends of the horizontal feed shaft 18 and inwardly from both bearings 20 and 21, there are vertical feed drive cams 4 for vertically feeding the seedling pine on the seedling stand 17.
4 and 45, and a vertical feed shaft 51 provided with a plurality of ratchet wheels 50 having a part of the outer periphery protruding from the upper surface of the seedling platform 17 at the lower part of the back surface of the seedling platform 17.
is supported substantially parallel to the horizontal feed direction by a pair of left and right outer bearings 52 and a center bearing 53, and the longitudinal feed shaft 51
is provided with a pair of left and right free foils 54 that transmit rotation only in one direction and rotate idly in the opposite direction, and a lever 55 integrally provided on both free foils 54 is connected to the seedling stand 17. The vertical feed drive cams 44 and 45 are brought into contact with the ends of the left and right horizontal feed, and the vertical feed drive cams 44 and 45 are rotated upward, thereby intermittently rotating the vertical feed shaft 51 in the direction of arrow B.
It is configured to vertically feed the seedlings above 7 one after another. Note that the sliding boss body 2 is attached to the horizontal feed shaft 18.
2 elastic bellows type boots 56, 57 on both sides
is fitted.

The two seedling planting cases 9 and 10 respectively support claw shafts 24 and 25 in the horizontal direction.
A swinging seedling planting mechanism 26, 27 is provided at the inner end of the seedling planting case 5, and a bevel gear 28 on the claw shaft 25 in the right seedling planting case 10 has a shaft inserted into the right side frame 5. Bevel gear 30 fitted to the tip of 29
The engine 2 Power is transmitted from the double claw shaft 24,
Seedling planting mechanism 2 to be transmitted to 25 and attached to each of them.
6, 27, and the seedling planting case 9 on the left side.
The chain 37 in the chain case 36 is wound around the sprocket 34 fitted on the outer end of the pawl shaft 24 and the sprocket 35 fitted on the outer end of the lateral feed shaft 18, and Horizontal feed shaft 18
It is configured to transmit rotation to.

Reference numerals 38 and 39 indicate a pair of left and right floats disposed on both sides of the wheel 8 and below the longitudinal feed drive cams 44 and 45, and the rear portions of the floats 38 and 39 are as follows: Both handles 1
3 and 14 via a planting depth adjustment rod 40, and the front ends of both floats 38 and 39 are attached to links 41 to both side frames 4 and 5.
It is installed so that it can move up and down automatically. In this case, the inner surfaces of both floats 38 and 39 are integrally provided with flattened portions 42 and 43 each having a substantially triangular planar shape. , 27 are located respectively, and both the flat parts 42,
The structure is such that seedlings are planted in the rear part of 43.

Further, a cover body 58 having a dogleg-shaped cross section or the like is disposed approximately parallel to the upper part of the transverse feed shaft 18, and both ends of the cover body 58 are bolted to both the control handles 13 and 14. It is detachably attached at 59 and 60.

In this configuration, seedling mats are supplied to the upper surface of the seedling stand 17, and when the engine 2 is started, the wheels 8
By driving the seedling planting mechanisms 26 and 27, the rice transplanter moves forward with the wheels 8, while the seedling platform 17 is reciprocated from side to side by the rotation of the transverse feed shaft 18, and the seedling platform 17 The seedling pine on the upper surface is divided one by one by the vertically swinging seedling planting mechanisms 26 and 27, and then the seedlings are placed on the field after leveling with the leveling parts 42 and 43 of the floats 38 and 39. The seedlings are planted sequentially along two rows.
7 reaches the end of the horizontal feed in the left-right direction, the lever 55 on the vertical feed shaft 51 on the seedling stand 17 side comes into contact with the vertical feed drive cams 44 or 45 provided at both ends of the horizontal feed shaft 18. As a result, the vertical feed shaft 51 rotates one pitch, and the seedling pine is vertically fed.

In this case, both handles 1, which also serve as support members for the horizontal feed shaft 18 to which the two vertical feed drive cams 44, 45 are attached, are provided on the outside of the two vertical feed drive cams 44, 45.
3 and 14 are located, and both vertical feed drive cams 44,
Floats 38 and 39 are located below 45, respectively, and of course both vertical feed drive cams 44 and 45
Since the seedling stand 17 is located above the
The outer, lower and upper sides of both longitudinal feed drive cams 44 and 45 are reliably guarded by essential constituent members of the rice transplanter.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view of a rice transplanter, FIG. 2 is a plan view of the rice transplanter, FIG. 3 is an enlarged plan sectional view of FIG. 1, and FIG. 1, FIG. 5 is an enlarged cross-sectional view of FIG. 3, and FIG. 6 is an enlarged cross-sectional view of FIG. 3. 1...Vehicle frame, 2...Engine, 3...
Transmission case, 4, 5...Side frame, 8...
Wheel, 7... Swing case, 9, 10... Seedling planting case, 26, 27... Seedling planting mechanism, 13, 14
... Control handle, 17 ... Seedling stand, 18 ... Horizontal feed shaft, 19 ... Reciprocating screw groove, 38, 39 ... Float, 44, 45 ... Vertical feed drive cam, 51 ...
...Vertical feed shaft, 50...Rawl wheel, 54...Freewheel, 55...Lever.

Claims (1)

[Claims] 1 A rearward-tiling seedling stand and a control handle extending rearward are provided at the rear of the vehicle body frame equipped with a pair of left and right floats, and the seedling stand is placed horizontally on the back side of the seedling stand. In the rice transplanter, a rice transplanter is provided with a horizontal feed shaft for feeding, and vertical feed drive cams are fixed to both left and right ends of the horizontal feed shaft for vertically feeding the seedling mats on the seedling platform. A support member extending rearward from the vehicle body frame is disposed outside the longitudinal feed drive cam, and both ends of the horizontal feed shaft are pivotally supported by both support members, while a support member is provided below the support members. , A drive device for a seedling stand in a rice transplanter, characterized in that each of the above-mentioned floats is provided.