JPS6029847Y2 - rice transplanter - Google Patents

Description

[Detailed description of the invention] This invention uses a lifting link mechanism that connects one end to the left and right sides of the planting device, and an upper link on the other end.
The lower link is connected to the lift arm of the machine, and the lower link is pivotally connected to the machine so as to be rotatable about the horizontal axis, so that both links have a V-shape that expands on the side closer to the machine when viewed from the side. a hitch that connects the lift arm and the upper link to the machine in a molded state, and connects the tips of the pair of lift arms to each other; and a connecting member that connects the tips of the pair of upper links to each other; The rice transplanter relates to a rice transplanter in which the hitch and the connecting member are connected via a vertical pin that connects the rice transplanting device in a rollable manner.

In such a rice transplanter, depending on the time of planting, the device automatically maintains a posture parallel to the mud surface depending on the change in the left and right slope of the mud surface, the left and right inclination of the machine body, etc. Since it swings from side to side, planting from left and right has the advantage that the depth can be kept constant or almost constant, regardless of changes in the mud surface.

The present invention is an improvement of a rice transplanter having such advantages, and its purpose is to solve the problems that sometimes occur due to the fact that the rice transplanter is configured to be able to swing from side to side. During planting, when the machine is traveling in the field or driving on the road, when the device is raised above the ground, the device swings from side to side as the device releases from the ground, causing the seedlings placed on the seedling tray to fall. The aim is to solve the problem of poor conditions such as crumbling and falling seedlings.

The rice transplanter according to the present invention, as explained at the beginning, has the following features:
Between the connecting member and the hitch, the planting uses the change in the opening angle of the link mechanism when the device is raised to restrict the left and right swinging of the device at the lateral displacement point of the pivot connection point between the two. It is characterized by being provided with a locking mechanism.

That is, according to the present invention, as the planting device moves up and down, the left and right rocking of the planting device can be automatically regulated and released. The attachment allows the device to automatically swing left and right so that it is parallel to the mud surface, and the planting depth on the left and right sides can be maintained at a constant or almost constant depth regardless of changes in the mud surface, etc. When the planting device is raised above the ground, such as when the aircraft is traveling or traveling on the road, the left and right posture of the planting device is fixed, and the planting device can be swung left and right due to the structure of the device. We have now been able to solve problems such as the seedlings collapsing and falling off at the point where they are derived.

Moreover, since the locking mechanism is provided between the connecting member and the hitch, there is an advantage that the locking mechanism is concentrated in one place and the structure is simple and easy to set up.

Hereinafter, an embodiment of the present invention will be explained based on the drawings.A rice transplanter is constructed in which a planting device 1 is arranged at the rear of the main machine 4 using a tractor so that it can be driven up and down. The lifting link mechanism 2, which is approximately horizontally V-shaped in side view, is attached to the left and right sides of the frame 1, and the corner portions are attached at the waist and the relative angle between the upper link 2A and the lower link 2B. In addition to equipping the device with the ability to change its posture,
This machine 4 is equipped with a pair of left and right lift arms 9, 9 which are driven to swing up and down by a hydraulic cylinder 8, and lower links 2B, 2B in the pair of link mechanisms 2, 2.
The tips of the two are pivotally connected to the rear surface of the machine 4 so as to be vertically swingable about the horizontal axis.

The upper link 2A of the left and right link mechanisms 2, 2 can be fitted onto and removed from the hitch 5, which has a U-shaped cross section and connects the tips of the pair of lift arms 9, 9. , 2A, which has a U-shaped cross section, is pivoted via a vertical pin 10 in a state that allows it to swing within a certain range with a point in the center between the left and right link mechanisms 2, 2 as a fulcrum. In addition to supporting and connecting, the left and right link mechanisms 2.2 are planted with a pivot connection part to the device 1, and the left and right link mechanisms 2, 2 are planted with a structure that allows left and right swing relative to the device 1. , by vertically swinging the lift arms 9, 9 with the lower links 2B, 2B serving as elevation route regulating links, the planting device 1 is raised and lowered, and the connecting member 3 is swung against the hitch 5. Due to the movement, the left and right link mechanism 2
, 2, the vertical position of the pivot connection point to the device 1 is changed in a contradictory manner, and the planting is configured such that the left and right posture of the device 1 with respect to the main machine 4 can be changed freely.

In other words, the structure is such that the rocking of the connecting member 3 with respect to the hitch 5 allows the machine 4 to swing from side to side (rolling) following the mud surface of the device 1 during planting.

Reference numeral 11 in the figure is a cover for a universal shaft for transmitting power from this machine 4 to the planting device 1. Between the intermediate part of this cover 11 and the planting device 1, there is a A rod 12 is interposed to restrict the back and forth swinging posture around the pivot connection point with the link mechanisms 2, 2.

In addition, the above-mentioned planting device 1 has a seedling resting stand IA that moves horizontally in a reciprocating manner and then tilts downward, and a seedling resting stand IA that moves up and down in conjunction with the reciprocating and horizontal movement of this seedling resting stand 1A. IA
The seedlings are taken out in unit quantities from the lower end of the slope of the planter, and the planter is equipped with a nail IB and a float 1C for leveling the planned surface and for obtaining ground support during the planting time. .

Therefore, planting is performed between the connecting member 3 and the hitch 5 by utilizing the change in the posture of the link mechanisms 2, 2 when the device 1 is raised, that is, the change in the opening angle. A locking mechanism 6 is provided to automatically and reversibly regulate and hold the rocking movement.

The locking mechanism 6 has a plunge action position in which the connecting member 3 is fitted into a hole 5a formed in the hitch 5 at a lateral displacement location of the pivot connection point to prevent the connecting member 3 from swinging relative to the hitch 5; A pair of pins 7 are provided which can be detached and switched to a non-working position in which the connecting member 3 is allowed to swing relative to the hitch 5, and which are urged by a spring 13 to move toward the thrust working position.
The tip 7a of this pin 7 is formed into a tapered surface, and the pin 7
is configured such that it can be automatically aligned with the hole 5a as it enters, and a long hole 1 is provided in the lower link 2B of the one link mechanism 2 and in the upper link 2A at one end thereof.
4. A swinging mechanism that is engaged and connected via a pin 15, swings to follow the posture change of the upper and lower links 2A and 2B as they ascend and descend, and when ascending, pulls a wire 16 that is latched and connected to the other end. An interlocking link mechanism 18 is provided with a link 17, and is arranged between the other end of the wire 16 and the pin 7, and operates in conjunction with the pulling operation of the wire 16 to switch the pin 7 to the plunge action posture against the bias. It is structured by intervening.

[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 main parts, Fig. 2 is a perspective view of the main parts, Fig. 3 is an enlarged cross-sectional plan view of the main parts, and Fig. 4 is a cross-sectional view of the main parts. Enlarged rear view with some parts cut away,
FIG. 5 is a sectional view taken along the line ■--■ in FIG. 4. 1... Device for planting, 2... Lifting link mechanism, 3... Connecting member, 4... Machine, 5...・Hitsuchi...Tatsuku Organization.

Claims (1)

[Scope of utility model registration request] For planting, use the lifting link mechanism 2 connected at one end to the left and right sides of the device 1, connect the upper link 2A to the lift arm 9 of the machine 4 at the other end, and connect the lower link 2B to the lift arm 9 of the machine 4. 4 so as to be rotatable around the horizontal axis, and connected to the main unit 4 in such a manner that both links 2A and 2B form a V-shape that expands on the side closer to the main unit 4 when viewed from the side. In addition, a hitch 5 connects the lift arm 9 and the upper link 2A to the tips of the pair of lift arms 9, and a connecting member 3 connects the tips of the pair of upper links 2A, 2A.
and a vertical pin 1 that connects these hits 5 and the connecting member 3.
0, and in the rice transplanter in which the planting device 1 is connected in a rollable manner, the connecting member 3 and the hitch 5 are connected to each other at a lateral displacement point of the pivotal connection point between the two. , A rice transplanter characterized in that the planting is performed by using a change in the opening angle of the link mechanism 2 when the device 1 is raised, and a locking mechanism 6 is provided for regulating the left and right swinging of the device 1.