JPH0715373Y2 - Stand structure of planting work machine - Google Patents

Description

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

<Prior Art> Conventionally, when a work machine towed by a planting work machine is stored, there is a stand member that extends downward and grounds to support the work machine in the air.

This stand member is a stand state used when storing the working machine, and a guard state that protrudes to the left and right sides of the working machine during work and protects the working machine by preventing direct contact between the working machine and obstacles in the field. , And there was one that could be switched to the storage state.

<Problems to be solved by the invention> However, in the above-mentioned conventional stand member, when the stand member in the guard state collides with ridges or other obstacles during work, the stand member is rather caught by the obstacles and planted. There are problems that work is interrupted, or the stand member is deformed or damaged.

<Means for Solving the Problems> The present invention for solving the above problems is an apron.
15. In the planting work machine 3 having the seedling mount 17 and the float 18 that reciprocate on the left and right, on both left and right sides of the planting work machine 3, the front end 43d extends forward from the rear side so that the front end 43d has a free end. A stand member 43 is vertically rotatably supported via a support portion 31, and the support portion 31 is grounded at a grounding portion 43c of the stand member 43 at a lowered position to fixedly support the planting work machine 3 in the air. The stand member 43 is configured to support the stand member 43 in a posture changeable state and a guard state B which projects outward from the end of the apron and allows upward rotation with respect to an external force from the lower side. At the front end of the stand member 43
A stand member that 43d is inclined upward toward the traveling direction and elastically deforms when the upward external force of a predetermined amount or less is applied from the front end side of the grounding portion 43c to absorb the impact.
The feature is that 43 is composed of an elastic member.

<Operation> The stand members 43 provided on the left and right of the planting work machine 3 rotate in the vertical direction outside the planting work machine 3. The stand member
43 is a lowered position, supports the planting work machine 3 in a stand state C in which the grounding portion 43 is grounded, and guards each part of the planting work machine 3 such as the apron 15 in a guard state B in a substantially horizontal position. In the guard state B, since the tip of the stand member 43 is inclined upward, even if the stand member 43 collides with an obstacle during traveling, the stand member 43 is inclined due to the upward inclination.
Is pushed upwards and escapes from the obstacle.

<Embodiment> An embodiment of the present invention will be described in detail below 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, which is fixed to the upper side of 19 and is bent in a U shape, is provided with a hole. 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 4, 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 a hole on the rear side is formed. A sleeve 35 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 grounding portion 43c extending forward and a front end 43d, and in this embodiment, it is formed by bending a pipe-shaped member. At the tip of the insertion portion 43a, a pin 44 is provided on the outside of the frame 33.
The stand member 43 is prevented from coming off by being inserted.

A disc-shaped engagement plate 45 is fixed to the stand member 43 side along the rear side surface of the frame 33 from which the tip of the locking pin 37 projects. Therefore, the engagement plate 45 is fixed to the stand member 43.
It will rotate together with. The stopper portion 47 formed by bending the side end of the engagement plate 45 is a stand member 43.
When it reaches a predetermined position, it contacts the frame 33 and stands
Restrict rotation of 43.

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
As shown in FIG. 4, the stand member 43 has an apron 15
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.

On the other hand, as shown in FIG. 1, the stand support portion 31 is attached with its front end tilted upward, so that the stand member 43 is supported in the guard state B with the front end 43d tilted upward. .

Further, as shown in FIGS. 3 to 5, the engaging portion 49a engaged in the retracted state of the stand member 43 and the engaging portion 49b engaged in the guard state are formed slightly smaller than the diameter of the locking pin 37, and are tapered. The inclined surface of 37b is in contact with the edges of the engaging portions 49a and 49b.
Therefore, even if the seedling mounting table 17 is accidentally operated in the retracted state, the stand member 43 is pushed out by the seedling mounting table 17, the locking pin 37 is retracted along the taper 37b, and the stand member 4
The lock of 3 is released. This allows the seedling table 1 to be stored in the storage state.
Even if 7 is operated, the seedling stand 17 collides with and is damaged by the stand member 43, or the stand support portion 31 of the stand member 43.
This prevents problems such as breakage.

Further, in the stand state C, as shown in FIG.
The locking pin 37 is completely inserted into 49c, and the lock state is completely locked. When changing the posture of the stand member 43 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. Further, if the taper angle θ shown in FIG. 5 is changed, the force required for unlocking can be adjusted.

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 ridge, the grounding portion 43c guards against damage to the apron 15. 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. Further, when an obstacle such as a ridge comes into contact with the lower side of the stand member 43 in the guard state B, the front end of the stand member 43 is inclined upward, so that the force is exerted in the direction of pushing the stand member 43 upward. The lock of the stand member 43 is released as in the case of the retracted state A, and the deformation and damage of the stand member 43 and the stand support portion 31 are avoided.

Furthermore, since only the stand member 43 is rotated and pushed up by the obstacle, the leveling of the planting part is maintained,
Collision with obstacles does not affect the planting depth.

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 lifting link 1 on the main body side, the planting work machine 3 is tilted to directly adjust the vertical position and the front-back position of the frame to easily perform the connecting work. Can be completed.

FIG. 7 is a partial side view of the planting work machine 3 showing the second embodiment of the present invention. In the second embodiment, the stand support portion 31 is mounted horizontally, and the stand member 43 ground portion 43c.
The front half of B is bent upward in the guard state B. The effect of the present invention can also be obtained by deforming the stand member 43. That is, as shown in FIG. 8, even if the step 51 such as a ridge or an obstacle is contacted, the front end
The stand member 43 is pushed upward by the bent inclined portion of 43d, and the taper 37b at the tip of the locking pin 37 causes the locking pin 3 to move.
7 is retracted, the locking is released, and the stand member 43 can be retracted. Therefore, the stand support portion 31 can be retracted upward along an obstacle or the like, so that the stand member 43 is prevented from being deformed or damaged. In the present embodiment, the shape may be curved or curved. Further, in the stand state C, the grounding portion 43c of the stand member 43 is opened to the outside.
It is possible to further stabilize the support of the.

In the second embodiment, since the stand member 43 may be deformed, there is an advantage that the ready-made stand member 43 can be modified and used.

<Effect of Device> According to the structure of the present invention configured as described above, even if the stand member comes into contact with an outer obstacle such as a ridge in a guarded state,
Since the front end is inclined upward and has an elastic structure, the impact between the planting work machine and the contact object during work is alleviated, and the stand member faces upward against external force from below the predetermined level. It has an effect of reducing troubles such as the rotation of the stand, the obstacle being caught and the stand member or the working machine being damaged.

[Brief description of 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.
FIG. 2 is a side view showing the stand supporting portion, FIG.
3 is an overall rear view, FIG. 4 is an overall rear view of the planting work machine, FIGS. 5 and 6 are partial cross-sectional views showing the engagement relationship between the engagement pin and the engagement plate, and FIG. FIG. 8 is a side view of the stand member showing the positional relationship between the stand member and the obstacle in the guarded state. 3: Planting work machine, 15: Apron 17: Seedling stand, 18: Float 43: Stand member, 43c: Grounding part 43d: Front end

Claims (1)

[Scope of utility model registration request] 1. A planting work machine (3) having a seedling placing table (17) and a float (18), which are moved back and forth on an apron (15), on both left and right sides of the planting work machine (3). , A front end (43d) extending from the rear side to the front side and having a front end (43d) as a free end rotatably supports a stand member (43) via a support portion (31), and the support portion (31) is supported by the stand member (31). Standing state (C) in which the grounding part (43c) of (43) grounds in the lowered position and fixedly supports the planting work machine (3) in the air, and it protrudes to the outside of the end of the apron, and more than a predetermined amount from below. The stand member (43) is supported in a guard state (B) that allows upward rotation with respect to the external force, and the front end (43d) of the stand member (43) is in the guard state (B). A rising slope is formed in the traveling direction, and the ground contact portion (43
The stand structure of the planting work machine in which the stand member (43) is made of an elastic member so that the stand member (43) is elastically deformed to absorb the impact when an upward external force of a predetermined amount or less is applied from the front end side of c).