JPH062497Y2 - Stand device support structure for planting work machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a stand device supporting structure of a planting work machine.

<Prior Art> Conventionally, in a mobile agricultural machine having a planting work machine such as a rice transplanter, for example, a stand has been devised for storing the planting work machine in a stable state during the off-season.

These stands were rarely used for maintenance and repair during the agricultural work period, etc., and when they were not used, they stood up and stored above the apron.

<Problems to be solved by the invention> On the other hand, in the regular rice transplanter, since the planting work machine is provided behind the driver, the state of the work machine during the planting work cannot be sufficiently recognized.

For this reason, if the seedling table is operated in the retracted state, which is raised above the apron, the seedling table is damaged by colliding with the stand that stores the seedling table that reciprocates left and right, or the stand is not supported. There was a problem that the department was broken.

<Means for Solving the Problems> The present invention for solving the above problems includes a planting work machine 3 having a seedling table 17 and a float 18 that reciprocate left and right on an apron 15, and the apron 15 of the apron 15. In the vicinity of both ends, a stand member 43 having a grounding portion 43c that extends from the upper end to the lower end side from the rear and extends forward,
It is rotatably supported via a stand support portion 31 provided on the planting work machine 3 side, the stand support portion 31 is fixed to the planting work machine 3 side, and the upper end of a stand member 43 is rotatably supported. A frame 33 that is supported in the forward direction, an engagement plate 45 that is close to the end surface of the frame 33 and that rotates together with the stand member 43, and the frame 33 and the engagement plate 45.
Between the locking pin 37, which is supported so as to be elastically slidable in the axial direction, and the tip of the locking pin 37, which corresponds to the rotational posture of the stand member 43, is detachably locked. And a plurality of engaging portions 49 for supporting the planting work machine in the air by grounding the stand member 43 when the grounding portion 43c is in the lowered position, and the apron end 15a in a substantially horizontal position. Guard state B located near the outside of
The stand member 43 can be locked in the retracted state A by locking the engaging portion 49 and the retaining pin 37 to the retracted state A located above the apron end 15a in the standing position. The locking pin 37 and the engaging portion 49 have different locking forces so that the seedling mounting table 17 is automatically and elastically released in conjunction with the left-right reciprocating motion and is automatically locked in the guard state B. It is characterized by having a structure.

<Operation> In the stand state C, the stand member 43 supports the planting work machine 3 in the air, protects the apron 15 in the guard state B, and stands up in the stored state A to be located above the apron 15. When the seedling mount 17 is operated in the stored state A,
In conjunction with the movement of 17, the stand member 43 is unlocked,
The stand member 43 falls outward. In the guard state B, the seedling table 17 is locked regardless of the reciprocating movement.

<Embodiment> An embodiment of the present invention will be described below in detail with reference to the drawings.
Figure 1 shows the lifting link 1 installed at the rear of the rice transplanter body.
And a planting work machine 3 detachably attached to the link 1.
It is a side view which shows. At the rear end of the elevating link 1, a detaching device 5 that supports the planting work machine 3 vertically and is detachable with one touch
Is provided.

The planting work machine 3 attached to the attachment / detachment device 5 will be described below. Behind the transmission case 7 which is connected to the main body side PTO shaft 6 to obtain power, a drive case 9 for transmitting the planting driving force to the rear end planting rod 11 is extended, and both ends of the transmission case 7 are upwardly extended. A stay 12 that supports the seedling stand 17 is attached, and the stay 12 is provided with detachable frames 13a and 13b that engage with the detachable device 5 of the main assembly side lifting link 1. Further, an apron 15 is fixed on the transmission case 7 in the left-right direction, and a seedling stand for accommodating mat seedlings is placed and supported on the apron 15 so as to be slidable in the left-right direction. The seedling mount 17 is reciprocated right and left by a lateral feed device. A float 18 is supported below the transmission case 7 in the front-rear direction.

At both ends of the transmission case 7, support rods extending further in the left-right direction are provided.
19 is fixed, and a marker support portion 21 and a stand support portion 31 are provided at the tip thereof. The marker support portion 21 is a support rod.
A channel-shaped mounting member 23 fixed to the upper side of 19 and bent in a U-shape is provided with a hole, and the outer side of the hole is attached to the marker-shaped marker side, which is also provided in the U-shaped marker side. The portion 25 is externally fitted and rotatably supported by the pin. A marker 29 is attached to the tip of the marker rod 24, and is constantly urged to the marking work position by a spring 27 connected to the tip of the marker side attachment portion 25.

As shown in FIGS. 2 to 5, a frame 33 is fixed to the lower side of the support rod 19 in the front-rear direction, holes are bored at opposing positions on the front and rear surfaces, and holes on the rear side are formed. A sleeve 45 is fixed inside. A locking pin 37 is inserted through the hole from the front. A biasing spring 39 is fitted on the outside of the locking pin 37 inside the frame 33, and the spring bearing fitted on the locking pin 37 is received.
The locking pin 37 is biased rearward via 41. Further, the front side of the locking pin 37 forms a bent lever portion 37a, and the rear end portion thereof has a taper 37b.

Further, a stand member 43 is inserted in the frame 33 in the front-rear direction and is rotatably supported. The stand member 43 is the frame 33.
An insertion portion 43a to be inserted into, a curved portion 43b curved at the rear end,
It is composed of a straight ground portion 43c extending forward, and is formed by bending a pipe-shaped member in this embodiment. A pin 44 is inserted to the outside of the frame 33 at the front end of the insertion portion 43a to prevent the stand member 43 from falling off. A disc-shaped engagement plate 45 is fixed to the stand member 43 along the rear side surface of the frame 33 from which the tip of the locking pin 37 projects. Therefore, the engaging plate 45 rotates integrally with the stand member 43, and the stopper portion 47 formed by bending the side end of the engaging plate 45 contacts the frame 33 when the stand member 43 reaches a predetermined position. Rotation of the stand member 43 is restricted.

The periphery of the engagement plate 45 is cut out at predetermined intervals, and the engagement portion 49
Are formed. The engaging portions 49a, 49b, 49c are provided at positions where the tips of the locking pins 37 engage when the stand member 43 rotates to a predetermined position. The engaging portions 49a, 49b, 49c
Is the apron 15 of the stand member 43 as shown in FIG.
In the retracted state A, which is raised above, in the guard state B, where the grounding portion 43c is positioned substantially horizontally and near the end of the apron 15, and in the stand state C, where the grounding portion 43c descends and is grounded. It is formed at a position to be engaged when it is opened. The engagement portion 49a that engages with the stand member 43 in the retracted state is formed to be slightly smaller than the diameter of the locking pin 37, and is in contact with the edge of the inclined surface moth engagement portion 49a of the taper 37b. Therefore, even if the seedling mounting table 17 is accidentally operated in the stored state, the seedling mounting table 17 pushes the stand member 43 outward, the locking pin 37 is retracted along the taper 37b, and the stand member 43 is locked. It will be canceled. Therefore, even if the seedling stand 17 is operated in the stored state,
Problems such as the seedling table 17 colliding with the stand member 43 and being damaged, or the stand supporting portion 31 of the stand member 43 being broken can be prevented.

Also, in the guard state B and the stand state C, FIG.
As shown in, the locking pin 37 is completely inserted into the engaging portions 49b and 49c, and the locking state is completely locked. Here the stand member 43
When the posture is changed to each position, the lever portion 37a of the locking pin 37 may be pulled forward to release the engagement between the locking pin 37 and the engaging portion 49.

Here, each posture position of the stand member 43 will be described. In the raised storage state A, the stand member 43 is locked in a state in which the stand member 43 is slightly inclined outward. When the seedling placing table 17 is operated, the seedling placing table 17 is pushed to release the locking, and the seedling placing table 17 falls outward and in the guard state B, the locking pin 37 is engaged with the engaging portion 49b and locked. The automatic release of the locking pin 37 in the stored state is not limited to the one provided with the taper 37b as described above, and other releasing means interlocked with the operation of the seedling stand 17 may be used. The taper angle θ
The force required to release the lock can be adjusted by changing the.

In the guard state B, the grounding portion 43c of the stand member 43 is located outside the end portion of the apron 15, so during traveling work,
Even if the end of the apron comes close to the frog, the grounding portion 43c protects the apron 15 from damage. Further, even if the grounding portion 43c comes into contact with an obstacle, the stand member 43, which is curved in a substantially U shape, is elastically deformed as a whole to absorb the impact, so that the stand supporting portion 31 is less likely to be damaged. Further, in the guard state, as shown in FIG. 4, the stand member 43 supports the marker rod 24 from the lower side during the marking work, so that the marker rod 24 can be reliably supported and the marker support portion
There is no need to strengthen 21 in terms of strength. Since the tip of the grounding portion 43c is bent inward, the stand member 43 in the guarded state does not get caught on the ridge or the like, and it makes smooth contact and guards the apron 15. The end 15a of the apron 15 is folded when the planting work machine 3 is stored.

In the stand state C, as shown in FIG. 4, the stand member 43 is locked with a slight inclination to the outside. Since the machine body of the planting work machine 3 is not directly grounded in the stand state, it is possible to reduce the occurrence of rust and the like in the machine body, and it is easy to perform maintenance and repair.

Furthermore, as described above, since the stand member 43 is substantially U-shaped, it is possible to elastically deform as a whole and tilt forward while firmly supporting the planting work machine 3 in a stand-supported state. . Therefore, in the structure of the present embodiment, when attaching / detaching the planting work machine 3 to / from the main body side lifting link 1, the planting work machine 3 is tilted to directly adjust the vertical position of the frame to easily complete the connecting work. be able to.

<Effect of the Invention> According to the structure of the present invention configured as described above, even if the planting work is performed with the stand member stored, the locking force between the locking pin and the engaging plate at the time of storage is weak. Since the stored state of the stand member is automatically released by the leftward and rightward movement of the seedling table, troubles such as damage to the seedling table due to collision with the stand member and damage to the support portion of the stand member can be solved.

In addition, the storage state can be released and changed to the guard state by moving the seedling mounting table from side to side from the state of weak locking force in the storage posture,
Since it automatically shifts to a state of strong locking force to the guard posture, no special change work is required, so it is possible to simplify the work procedure and improve work efficiency. Since the stand member is locked in the guarded state, the stand member has sufficient stability to guard the working machine.

[Brief description of drawings]

FIG. 1 is a side view showing a work machine with a planting machine and a main body link, FIG. 2 is a side view of a stand supporting portion, FIG. 3 is a rear view of the same, FIG. 4 is a rear view of the work machine with a planting, and FIG. Is a partial cross-sectional view showing the engagement state of the locking pin and the engagement portion 3: Planting work machine, 15: Apron 17: Seedling stand, 18: Float 43: Stand member, A: Storage state B: Guard state, C : Stand state

Claims (1)

[Scope of utility model registration request] 1. A seedling stand (1) that reciprocates left and right on an apron (15).
In the planting work machine (3) having the float (18) and the float (18), a grounding portion (43c) extending forward from the upper end to the lower end is formed near the both ends of the apron (15). The stand member (43) is rotatably supported via a stand support portion (31) provided on the planting work machine (3) side, and the stand support portion (31) is attached to the planting work machine (3). Frame body that is fixed to the side and rotatably supports the upper end of the stand member (43) in the forward direction.
(33) and the stand member (4
(3) An engaging plate (45) that rotates integrally with the engaging plate, and a locking pin that is supported so as to be elastically slidable in the axial direction between the frame body (33) and the engaging plate (45). (37) and the locking pin corresponding to the rotational posture of the stand member (43).
(37) is provided with a plurality of engaging portions (49) that engages and disengageably engages, and the stand member (43) is grounded when the grounding portion (43c) is in the lowered position. Stand in the air (C), in a horizontal position near the outside of the apron end (15a) near the guard (B), and in a standing position above the apron end (15a). When in the retracted state (A), the engaging portion (4
9) and locking pin (37) can be locked to change the posture,
Lock the stand member (43) in the retracted state (A) to the seedling table.
The locking pin (37) and the engagement part (49) are locked so that they are automatically and elastically released in conjunction with the left-right reciprocating motion of (17), and are automatically locked in the guard state (B). A stand device support structure for work machines with planting that has different structures.