JP2510933Y2 - Seedling planting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is designed such that a screw shaft having a spiral groove formed on an outer peripheral portion thereof is fitted with a frame receiving member having a frame member engaging with the spiral groove. The present invention relates to a seedling planting device configured to interlockly connect the top receiving member to a seedling stand and to reciprocally laterally move the seedling stand in accordance with the rotational driving of the screw shaft.

[Conventional technology]

In the above drive structure, conventionally, for example, Japanese Patent Laid-Open No.
As disclosed in Japanese Patent No. 78615, the top receiving member is installed in a planting transmission case, and the top receiving member is attached to the seedling through a long supporting rod extending over substantially the entire width of the seedling stand. Some were configured to interlock with the platform.

[Problems to be solved by the device]

However, in the case of the above-mentioned conventional structure, when the seedling stand is assembled and attached to the planting transmission case, the long support rod is laterally fixed to the frame receiving member while being fixed in a laterally fixed state. Both left and right ends must be connected to the seedling stand, which complicates the assembly work, and when adjusting the relative position in the lateral direction between the seedling stand and the planting transmission case, that is, the planting claw. In addition, the position adjustment had to be performed at the connecting points at both ends of the support rod, which was difficult to do. In particular, when the number of planted rows is large, the above-mentioned harmful effects are remarkable. An object of the present invention is to eliminate the above-mentioned problems by rational structural improvement.

[Means for solving the problem]

According to a characteristic configuration of the first invention, in the seedling planting device described at the beginning, a U-shaped bracket is fixed to the seedling stand, and a screw shaft in which the top receiving member is screwed is formed in an intermediate portion of the bracket. The screw shaft is laid horizontally, one end side of the screw shaft is rotatably supported by the bracket in a positionally fixed state in the axial direction, and the other end side is penetrated through a large diameter hole formed in the bracket through a collar. The point is that they are supported and fastened with nuts from both sides of the large-diameter hole penetrating part.

The characteristic configuration of the second invention is that a U-shaped bracket is fixed to the seedling stand, and a screw shaft in which the frame receiving member is screwed in an intermediate portion is horizontally mounted on the bracket, and one end of the screw shaft is attached. Side is rotatably supported in the bracket in a positionally fixed state in the axial direction, and the other end is slidably and rotatably in the axial direction through a bush in a large diameter hole formed in the bracket. The point is that the nut is tightened on the lateral side of the threaded portion of the frame receiving member with respect to the screw shaft to be pressed through.

[Action]

According to the structure of the first invention, when the seedling stand is connected and attached, the screw shaft is inserted through the large diameter hole of the bracket previously fixed to the seedling stand, and the top receiving member is screwed into the screw shaft, One end side of the screw shaft is supported by the bracket so as to penetrate therethrough.
At this time, since the screw shaft is fixed in position in the axial direction with respect to the bracket and is rotatable, the screw shaft can be rotated in this state to change and adjust the relative position in the lateral direction with respect to the bracket. . Then, after the position adjustment is completed, the other end of the screw shaft is rotatably supported via the collar, and the nut is tightened and fixed from both sides of the large-diameter hole penetrating portion of the bracket, so that the bracket The table and the frame receiving member are interlocked and connected.

According to the configuration of the second invention, when the seedling stand is connected and mounted, the screw shaft is inserted through the large diameter hole of the bracket which is fixed to the seedling stand in advance, and the piece receiving member is screwed, One end side of the screw shaft is supported by the bracket so as to penetrate therethrough.
At this time, since the screw shaft is fixed in position in the axial direction with respect to the bracket and is rotatable, the screw shaft can be rotated in this state to change and adjust the relative position in the lateral direction with respect to the bracket. . Then, after the position adjustment is completed, the other end side of the screw shaft is supported by the bracket through the bush without rattling, and the top of the frame receiving member which is also screwed into the screw shaft is prevented from rotating. The nut, which is tightened on the side of the screwed portion with respect to the screw shaft, is pressure-welded to interlockly connect the bracket, that is, the seedling stand and the piece receiving member.

[Effect of device]

Therefore, according to the present invention, by reasonably improving the structure, the work of connecting the seedling stand and the piece receiving member can be easily performed, and the lateral movement of the seedling stand can be easily adjusted at one place. As a result, the number of assembly steps can be reduced.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. FIG. 3 shows a seedling planting device according to the present invention. This seedling planting device is vertically movable via a parallel link mechanism (1) and connected to a traveling machine body (not shown), and can be reciprocally moved back and forth with respect to the framed planting transmission case (2). The seedling stand (3) in an inclined posture is supported, and at the rear part of the three chain cases (4) extending rearward from the transmission case (2), one seedling is placed from the lower end of the seedling stand (3). Equipped with 6 planting claws (5) to cut out each plant and plant it,
A ground float (6) is arranged on the lower side to form a six-row planting type. An endless rotating belt (7) with projections for vertically feeding the seedlings by an amount equivalent to one planting at the end of the lateral movement stroke on each seedling stand (3). The vertical feeder (8) is provided.

Next, the transmission structure will be described. As shown in FIG. 1, power is supplied to the planted transmission case (2) from the traveling machine body side through the transmission shaft (9), and is connected to the lateral side of the planted transmission case (2). There is a connecting pipe frame (1
0), (10) through the relay transmission shaft (11) arranged on the inner side and each of the chain cases (4) to supply power to each of the planting claws (5) to drive the planting. Configured. On the other hand, the power from the transmission shaft (9) is generated by the planted transmission case (2) and the connecting pipe frame (10).
Is provided to a screw shaft (13) supported by a bracket (12) fixedly extended from the above, and a lateral movement piece receiving member (14) of the seedling placing table (3) can be slid on the screw shaft (13). Is externally engaged with.

Next, the driving structure of the vertical feeder (8) will be described.

An end portion of the screw shaft (13) on the support side of the planted transmission case (2) is cantilevered to the outside of the case, and an eccentric cam mechanism (22) is provided on the extended portion (13a). At the same time, the rotation support shaft (24) is rotatably supported by a bracket (23) fixedly extending from the connection pipe frame (10) in the vicinity thereof. ), The swinging arm (25) integrally rotatably connected to the eccentric cam mechanism (22) is interlocked, and the rotation support shaft (24) is predetermined as the screw shaft (13) rotates. It is configured to swing at an angle. Then, as also shown in FIG. 2, the operation arm (2) of the drive side pulley (19a) in the vertical feeding device (8) is
6) to the pulley support shaft (27) with the one-way clutch (2
8) through which the operation arm (26) can be integrally rotated only in the longitudinal feeding direction and can be rotated in the opposite direction and returned to the standby position by the spring (29) and urged.
And a pair of drive arms (30) and (30) that interlock with the operation arm (26) at the left and right stroke ends of the rotary support shaft (2).
It is fixed to 4) so that it can swing integrally. Further, the drive arm (30) is configured to be driven and operated in a state in which it is abuttingly interlocked over the entire operating range of the operation arm (26).

Next, the lateral feed drive structure of the seedling stand (3) will be described. A reciprocating spiral groove (15) is formed on the outer peripheral portion of the screw shaft (13), and the frame receiving member (14) fitted on the screw shaft (13) is engaged with the spiral groove (15). A top member (17) having an engaging projection (16) is internally provided, and the engaging projection (16) is guided along the spiral groove (15) as the screw shaft (13) rotates. The frame receiving member (14) is configured to slide back and forth in the left-right direction at a constant pitch.
More specifically, in the insertion hole (18) formed in the top receiving member (14) along the axial direction of the screw shaft (13), the engagement protrusion (16) of the top member (17) is spirally grooved. Since the top receiving member (14) is arranged on the outer side of the planted transmission case (2) while being fitted in the posture of engaging with (15), the above-mentioned member is provided to prevent dust from entering. The opening of the insertion hole (18) is covered with the lid (11). A projection (31) is formed in the center of the end surface of the top member (17) opposite to the engaging projection (16), and the lid (11) is connected to the top receiving member (14) to cover the lid. The body (11) contacts the projection (31) and supports the top member (17). The lid body (11) is detachably connected to the top receiving member (14) by bolts (21).

Since the spiral groove (15) is reciprocally driven in both left and right directions, it must be formed so as to be continuous in an endless manner, and since it intersects at an intermediate portion thereof, it differs from the desired direction at such an intersecting portion. The engagement projections (16) are elliptical or oval in cross section in order to prevent the engagement projections (16) from being erroneously guided. As a result, the top member (17) rotates due to the reciprocating slide drive as described above. However, by forming the protrusion (31), the rotation operation becomes smooth, and the rotation is accompanied. Sliding contact wear is reduced.

The top receiving member (14) is interlockingly connected to the back of the seedling stand (3) so that the relative position can be adjusted. That is, the U-shaped bracket (32) fixed to the seedling stand (3) is crossed with the screw shaft (33), and is attached to and detached from the frame receiving member (14) at the intermediate portion of the screw shaft (33). A female screw member (34) freely connected by an insertion pin is screwed together, and one end side of the screw shaft (33) is supported by the bracket (32) so as to be positionally fixed and relatively rotatable in the axial direction, and the other end. The side is tightened and fixed by the nut (35). Then, when assembling, the planting nail (5)
When finely adjusting the relative position of the seedling stand (3) with respect to the seedlings, the tightening nut (35) is loosened and the screw shaft (33) is rotated to perform the adjustment. More specifically, one end side of the screw shaft (33) penetrates the vertical wall portion (32a) on one side of the bracket (32) and both sides are axially fixed by the split pin nuts (36) in a state of being fixed relative to each other. It is rotatably supported. That is, the nut (36) is the screw shaft (33).
Rotation is prevented by detent pins (37) and (37) penetrating through. The other end of the screw shaft (33) is pierced through the large diameter hole (39) formed in the other vertical wall portion (32b) of the bracket (32) through the collar (38) to support the large diameter hole ( 39) It is fixed by tightening lock nuts (35), (35) from both sides of the penetration part.

When the seedling stand (3) is assembled and connected to the frame receiving member (14), the screw shaft (33) is installed on the bracket (32) while the female screw member (34) is screwed. This can be handled by connecting the female screw member (34) to the top receiving member (14) with the pin (41) in the assembled state. In addition, when the hexagonal head (33a) is formed at one end of the screw shaft (33) and the relative lateral movement of the seedling stand (3) with respect to the planted transmission case (2) is adjusted, This can be dealt with by loosening the lock nuts (35) and (35) and rotating the hexagonal head (33a) with a tool.

[Another embodiment]

The connection between the seedling stand (3) and the top receiving member (14) is such that the other end of the screw shaft (33) slides in the axial direction through the bush (42) as shown in FIG. The bracket (32) may be rotatably and rotatably pierced in the large hole (39) of the bracket (32), and the nut (43) may be tightened and pressure-welded to the lateral side of the female screw member (34). Good.

In the claims of the utility model, reference numerals are given for the sake of contrast with the drawings, but the invention is not limited to the configuration of the accompanying drawings by the entry.

[Brief description of drawings]

The drawing shows an embodiment of a seedling planting device according to the present invention, FIG. 1 is a cutaway rear view showing a transmission system, FIG. 2 is a cutaway plan view, and FIG.
FIG. 4 is a side view, and FIG. 4 is a cutaway rear view of essential parts of another embodiment. (3) …… Seedling stand, (13) …… Screw shaft, (14) …… Top receiving member, (15) …… Spiral groove, (17) …… Top member,
(32) …… Bracket, (33) …… Screw shaft, (35),
(43) …… nut, (38) …… collar, (39) …… large diameter hole, (42) …… bush.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Koji Yoshida 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Creator Kamenono Tokumi 64, Ishizukita-machi, Sakai City, Osaka Prefecture Ku Co., Ltd. Bota Sakai Factory (72) Inventor Takeshi Mukai 64 Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd. (72) Yasushi Minamikawa 64, Ishizukita-machi, Sakai City Osaka Prefecture Kubota Sakai Factory, Ltd. (56) ) References JP-A-62-296806 (JP, A)

Claims (2)

(57) [Scope of utility model registration request] 1. A screw shaft (1) having a spiral groove (15) formed on an outer peripheral portion thereof.
A frame receiving member (14) having a frame member (17) that engages with the spiral groove (15) is externally fitted to 3), and the frame receiving member (14) is interlocked with the seedling stand (3). Then the screw shaft (1
A seedling planting device configured to reciprocally and laterally move the seedling stand (3) in accordance with the rotational drive of (3), wherein a U-shaped bracket (32) is attached to the seedling stand (3). The screw shaft (33) having the frame receiving member (14) screwed in the middle part is horizontally mounted on the bracket (32), and one end of the screw shaft (33) is fixed to the bracket (32). It is rotatably supported and pierced in a positionally fixed state in the axial direction, and the other end is pierced by a large diameter hole (39) formed in the bracket (32) through the collar (38) and is large. A seedling planting device that is fixed by tightening nuts (35) from both sides of the through hole (39). 2. A screw shaft (1) having a spiral groove (15) formed on an outer peripheral portion thereof.
A frame receiving member (14) having a frame member (17) that engages with the spiral groove (15) is externally fitted to 3), and the frame receiving member (14) is interlocked with the seedling stand (3). Then the screw shaft (1
A seedling planting device configured to reciprocally and laterally move the seedling stand (3) in accordance with the rotational drive of (3), wherein a U-shaped bracket (32) is attached to the seedling stand (3). The screw shaft (33) having the frame receiving member (14) screwed in the middle part is horizontally mounted on the bracket (32), and one end of the screw shaft (33) is fixed to the bracket (32). A large-diameter hole formed in the bracket (32) rotatably and throughly supported in a positionally fixed state in the axial direction, and the other end side being slidable and rotatable in the axial direction through the bush (42). A seedling planting device which is pierced and supported by (39) and in which a nut (43) is tightened and pressure-welded to the side of a screwing part (34) of the top receiving member (14) with respect to the screw shaft (33).