JPH0226251Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is designed so that the soil gathering tool, which presses and moves the mud toward the planting seedling side as it descends, is linked to the planting claws that are driven in circulation up and down, and is driven up and down in a reciprocating manner. Regarding rice transplanters.

When planting seedlings as the machine moves, this rice transplanter can backfill the grooves even if the planting claws form grooves as the seedlings are planted. It was designed to prevent it from falling over, but
Conventionally, when the planting nails were driven, the soil gathering tool was always driven, which caused the inconvenience of soil gathering even when unnecessary.

In other words, it is necessary to fill the soil in fields with hard mud, and in fields with soft mud, the grooves formed by the planting claws will cause muddy water to flow immediately into the grooves. There is no need to carry out mulching because the mulch will be buried, and if the mulching tool is driven even when it is not needed, there will be the disadvantage of wasting power, the disadvantage that the mulching tool will wear out early due to contact with mud, and There were disadvantages such as the inconvenience that the mud surface became rough, and there was room for improvement.

The present invention was developed in view of the above-mentioned circumstances, and its purpose is to make it possible to stop the unnecessary operation of the mulching tool by simple modification, and to make it possible to prevent the mulching tool from becoming muddy when it is in a stopped state. The structure is simple and easy to operate to prevent contact with surfaces and other objects, as well as to prevent the mulching tool from coming into contact with mud surfaces or other objects when it is in a stopped state. It is in the point of doing.

The characteristic configuration of the rice transplanter according to the present invention is such that the linkage mechanism between the soil mulching tool and the planting claw can be freely released from the linkage, and in the released state, the soil mulching tool is placed at a non-working position outside the mud pressing action range. A locking device is provided for locking and supporting a portion of the earth-filling device, and the locking device is configured by an elastic clamping device that can elastically lock and detach a part of the earth-filling device. It is located on the outside of the mission case.

Next, the effects of the feature configuration of the present invention will be described.

In other words, it is possible to release the link between the soil gathering tool and the planting claw, and stop the driving of the soil gathering tool separately from the planting claw, and also move the soil massing tool whose drive has been stopped to a non-operating location outside the range of mud pressing action. It is designed to be held in place.

Therefore, by stopping the drive of the mulching tool according to field conditions, it is possible to suppress wasteful power consumption and roughness of the mud surface caused by unnecessary driving of the mulching tool. By keeping the stopped mulching tool in a non-operating position, the mulching tool may come into contact with the mud surface unnecessarily during planting work and be worn out early, and when the mulching tool is running on the road, it may cause damage to other surfaces such as the road surface. This makes it possible to avoid deformation and damage due to contact with objects, and furthermore, when holding the earth bulging tool in a non-working position outside of the mud pressing action range, the locking tool is attached to one of the earth mulling tools. For example, when holding the soil gathering tool in a non-working position outside of the mud pressing action range, the planting claw Compared to the case where a fixed-position stop clutch is incorporated into the power transmission clutch, in which the earth-harvesting tool stops at a non-working position outside the mud pressing action range, the structure is simpler without changing the power transmission structure inside the planting transmission case. Moreover, because of the elastic clamping structure, it is easy to engage and disengage.
We have now achieved a rice transplanter that is even more convenient to use.

Hereinafter, embodiments of the present invention will be described based on the drawings.

As shown in FIGS. 1 and 2, a pair of left and right propulsion wheels 1 that touch the ground on a hard surface are juxtaposed with an interval in the width direction of the fuselage, and each rear end side has a horizontal axis X.
The aircraft is structured so that it can move while supporting the aircraft by working together with three floats 2 that are pivotally supported around it so as to be able to swing up and down, and four pine-shaped seedlings W
A slanted seedling tray 3 is driven reciprocatingly in the widthwise direction of the fuselage with a constant stroke while the seedlings are placed side by side in the widthwise direction of the fuselage. Four planting claws 4 take out one seedling from the lower end of each pine-shaped seedling W and plant it in the field as the seedlings grow, and the four planting claws 4 are driven to reciprocate up and down in conjunction with the planting claws 4. A seedling planting device is provided at the rear of the fuselage, which is equipped with four soil gathering tools 5 that push the mud toward the planting seedling side as it descends. This is a four-row walking type rice transplanter that protrudes toward the ground and automatically plants four rows of seedlings in succession as the machine advances.

To drive the planting claw 4, as shown in FIGS. 2 and 3, the input shaft 8 of the planting mechanism case 7 for driving the planting device is connected to the transmission shaft 10 to the engine 9 at the front of the machine. A transmission shaft 11 is provided which is interlocked with the input shaft 8 through a bevel gear, and the transmission shaft 11 is interlocked and connected with each of the three pawl drive rotating shafts 12 through a transmission chain 13. be. A case 14 that supports the planting nail 4
, the swinging arm 15 and the rotating shaft 12 for driving the claw.
The planting claws 4 are pivotally connected to crank arms 16 attached to the respective crank arms 16, so that the planting claws 4 are driven to circulate up and down. However, reference numeral 17 in the figure is a seedling pusher that operates to protrude toward the tip of the claw when the planting claw 4 reaches near the bottom dead center, and is attached to the claw support case 14 so as to be driven in and out. be.

In order to drive the earth gathering tool 5, as shown in FIGS. 2 and 3,
As shown in FIG.
are rotatably supported by the transmission case 7 with both ends supported by bearings 19 and the central part supported by the locking piece 20, and the four soil gathering tools 5 are mounted on the horizontal shaft 18. At the same time, swing arms 21 are attached at appropriate intervals in the axial direction to the four planting claws 4, and swing arms 21 are attached to the horizontal shaft 18 so as to rotate integrally with each other.
The arm 22 is externally fitted to the tip of the crank arm 16 relative to the left end pawl in a manner that prevents relative rotation.
They are interlocked and connected via a link 23, so that the soil gathering tool 5 is reciprocated up and down in conjunction with the planting claws 4.

The horizontal axis 18 is connected to a portion 1 that is located between adjacent earth mopping tools and immediately behind the wheel 1.
8a is bent so as to protrude upward;
Even if the mud surface part of the path of the wheel 1 rises, the horizontal shaft 18 is prevented from coming into contact with the raised part, and the problem caused by contact, that is, the traveling resistance becomes large, is avoided. This is designed to avoid inconveniences such as the posture of planted seedlings being disturbed due to mud flowing due to contact.

As shown in FIGS. 6 and 7, the link 23 that interlocks and connects the planting claw 4 and the soil gathering tool 5 is configured such that, as shown in FIG. 6 and FIG. A shaft member 24, which has a shaft portion 24a and a threaded shaft portion 24b smaller in diameter than the shaft portion 24b on the distal end side for screwing in a retaining nut, is mounted relatively rotatably via a bearing. A hole portion 2 in which an elliptical shaft portion 24a is fitted into an arm 22 attached to the crank arm 16 and a swing arm 21 attached to the horizontal shaft 18 in a relatively non-rotatable manner.
5, and a notch 26 is formed to allow the threaded shaft portion 24b to be inserted into and removed from the hole portion 25 by movement in a direction perpendicular to the axis thereof, and the link 23 is By moving the member 24 in a small range in the axial direction to remove the elliptical shaft portion 24a from the hole portion 25, and then moving the shaft member 24 in a direction perpendicular to the axial center, both arms 2 are removed.
1 and 22, and can be attached to both arms 21 and 22 by reversing the above procedure.

In short, in order to be able to stop the driving of the soil gathering tool 5 separately from the planting claws 4, the linkage mechanism 27 between the soil gathering tool 5 and the planting claws 4 is configured to be releasable, and for this purpose, the link 23 is When attaching and detaching, the link 23 is not moved in a large range in the axial direction of the shaft member 24, so that the link 23 can be attached and detached without being disturbed by the upwardly projecting portion 18a of the horizontal shaft 18.

In addition, when the linkage mechanism 27 is in the disengaged state, the horizontal shaft 18
A locking tool 28 that locks the upwardly protruding portion 18a of the
is formed from an elastic clamping device in which a plate spring material is bent in a C-shape in order to allow the engagement and disengagement of the upwardly protruding portion 18a through elastic deformation, and is attached to the lateral side of the planting mission case 7. The soil gathering tool 5, which is provided and whose drive is stopped, is prevented from coming into contact with the mud surface during planting work and with the road surface when traveling on the road.

To explain the transmission clutch 29 that continues to drive the seedling planting device, as shown in FIG. 8 and FIG. ,
A transmission bevel gear 31 with an occlusal protrusion that is freely rotatably supported on the transmission shaft 11 by sliding is provided so as to be able to engage and disengage freely, and is also provided with a spring 32 that biases the movable clutch piece 30 toward the occlusal side. A bolt 34 is provided to prevent the shift fork 33 from being locked and moved toward the withdrawal side, and the movable clutch piece 30 is provided with a bolt 34 in which the planting claw 4 is located in a specific phase range A above the bottom surface of the float 2. A notch 35 is formed that allows the bolt 34 to be inserted only when the soil gathering tool 5 is located within a specific phase range B above the bottom surface of the float 2. The driving of the planting device is configured so that it can be stopped in a state where the planting claws 4 and the soil gathering tool 5 are held at a position where they are difficult to come into contact with other objects.

The present invention can be applied to not only a walking rice transplanter but also a riding rice transplanter.

Further, the specific structure of the mechanism 27 that links the soil gathering tool 5 with the planting nails 4 can also be changed in various ways.

Further, the action location of the locking tool 28 that locks and supports the earth-filling tool 5 in the non-operating position C can be changed in various ways, such as being provided so as to act directly on the earth-filling tool 5, for example.

[Brief explanation of the drawing]

The drawings show an embodiment of the rice transplanter according to the present invention, in which Fig. 1 is a side view of the walking rice transplanter, Fig. 2 is a rear view showing the drive structure of the soil gathering tool, and Fig. 3 is the - line in Fig. 2. A sectional view, FIG. 4 is a side view showing a disengaged state of the soil gathering tool with respect to the planting claw, FIG. 5 is a side view of the horizontal shaft locking frame, FIG. 6 is a cutaway side view showing the link connection structure, and FIG. The figures are a view taken along the - line in FIG. 6, FIG. 8 is a cross-sectional plan view showing the mounting portion of the transmission clutch, and FIG. 9 is a view taken along the - line in FIG. 8. 1... Wheel, 4... Planting claw, 5... Earth gathering tool,
7...Planting mission case, 18...Horizontal axis, 1
8a...Upward protruding portion, 27...Linkage mechanism, 28
... Locking tool, C ... Inactive position.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A soil gathering device 5 that presses and moves muddy soil toward the planted seedling side as it descends is linked to a planting claw 4 that is driven to circulate up and down, and is provided so as to be driven up and down in a reciprocating manner. The rice transplanter is a rice transplanter in which the linkage mechanism 27 between the soil-clamping tool 5 and the planting claw 4 is configured to be able to be freely released from the linkage, and in the released state, the soil-clamping tool 5 is moved out of the range of mud pressing action. A locking tool 28 for locking and supporting the position C is provided, and the locking tool 28 is constituted by an elastic clamping tool that can elastically lock and detach a part of the earth-filling tool 5. A rice transplanter in which a locking tool 28 is provided on the outside of a planting transmission case 7. 2. A plurality of the earth mulching tools 5 are attached at appropriate intervals in the axial direction to one rotatably supported horizontal shaft 18, and the horizontal shaft 18 is located between adjacent earth mulching tools, and the wheels A utility model registration claim in which the portion located directly behind the horizontal shaft 18 is bent so as to protrude upward, and the locking device 28 is provided so as to lock the upwardly projecting portion 18a of the horizontal shaft 18. A rice transplanter according to item 1 of the scope.