JPH0220893Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is designed so that the seedling planting device can always maintain a constant posture with respect to the rice field regardless of the ups and downs of the tiller, and when traveling on the road, the seedling planting device can be It is a rice transplanter that is configured to be able to change the longitudinal direction of the device to the direction along the direction of movement of the vehicle body, and in detail, a lifting link mechanism equipped on the traveling vehicle body is driven up and down by a hydraulic cylinder equipped with a suspension spring. , relates to a rice transplanter in which a seedling planting device is detachably connected to the tip of this link mechanism.

A conventional rice transplanter of this type has the above-mentioned configuration, in which the hydraulic cylinder raises and lowers the seedling planting device at the edge of the ridge or controls its attitude with respect to the rice field surface, and the suspension spring Although the device is configured to move up and down relative to the rice field in response to fine undulations, when the seedling planting device descends, it causes a hunting phenomenon due to inertial force, making it difficult to plant seedlings in a good condition. I couldn't do it.

In view of these circumstances, the present invention adds a simple mechanism to the above structure to prevent the hunting phenomenon without impairing the ability of the seedling planting device to be attached to and detached from the link mechanism. The purpose is to provide something that can ensure good planting conditions for seedlings.

The characteristic configuration of the rice transplanter according to the present invention, which has been made to achieve the above object, is that an elastic damper is installed across the link mechanism and the frame member on the side of the seedling planting device, and one end of this damper is They are pivotally connected using a removable engagement mechanism using a notch and a pin.

The effects of the present invention having such a characteristic configuration are as follows.

(Function) By installing the damper, it is possible to reliably prevent the hunting phenomenon of the seedling planting device, and
This damper is not only simply attached and fixed across the link and the frame member, but also configured so that one end of the attachment can be attached and detached by an engagement mechanism, so that the damper can be attached and detached at the same time as the seedling planting device is attached and detached. The damper is also removable.

(Effect) By providing the damper in a detachable manner between the link and the frame member, it is possible to ensure a good planting condition of the seedlings without interfering with the detachability of the seedling planting device. Ivy.

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

As shown in FIG. 1, a driving body A supported by front and rear wheels 1 and 2 is provided with a driving unit 3 and a driver's seat 4, and at the rear thereof, left and right lower links 5a,
An elevating link mechanism 5 consisting of an upper top link 5b and a frame body 5c pivotally connected to their respective rear ends is equipped so as to be able to be driven up and down by a hydraulic cylinder 7 equipped with a suspension spring 6. A seedling planting device B consisting of a seedling stand 8, a planting mechanism 9, and a ground float 10 is detachably connected to the tip of the mechanism 5 to constitute a riding-type rice transplanter for planting eight rows.

The attachment/detachment connection structure of the seedling planting device B will be described in detail based on FIGS. 2 to 4. That is, an inverted U-shaped frame portion 11 to which the left and right lower links 5a are connected, a frame portion 12 welded to the upper part of the frame portion 11 and to which the top link 5b is connected, and both frame portions 11, 12.
The frame body 5c is constructed by providing a plate-shaped frame portion 13 that is welded while being brought into contact with the back surface of the frame body 5c. A pair of left and right swing arms 15, 1 support the seedling planting device B in a rollable manner from a plate body 14 which is triangular in front view and can be detachably connected to the frame body 5c.
5 is installed.

To removably connect the triangular plate body 14 to the frame body 5c, a hole 16a that engages with a hook-shaped body 16 protruding from the top link connecting frame portion 12 is formed into a triangular shape whose width becomes narrower toward the upper end. Formed into a shaped plate body 14,
A hole 18 into which the body-side protruding portion of the pivot shaft 17 of both swing arms 15, 15 is inserted and removed is formed in the plate-shaped frame portion 13, and an L-shaped lock that can be freely engaged with and detached from the pivot shaft protruding portion is formed. A member 19 is pivotally attached to the plate-shaped frame portion 13. However, reference numeral 20 in the figure indicates that the biasing direction is switched as the lock member 19 swings in order to bias the lock member 19 toward the engagement side in the engagement position and toward the release side in the disengagement position. It's a spring.

As shown in FIGS. 5 to 7, seedling planting device B
A pair of left and right wheels 39 are removably provided at the bottom of the traction frame 21, and a traction connecting frame 21 is removably attached to the end of the seedling planting device B. A hole 23 formed in the plate-shaped frame portion 13 allows the L-shaped connector 22 to be pivotally supported in a swingable manner.
A lock pin 2 for preventing removal is provided in the
4 is removably installed at the end of the connector 22, so that the seedling planting device B can be towed with its longitudinal direction facing forward and backward when traveling on the road.

As shown in FIGS. 2 and 3, a retractable damper 26 is installed between the link mechanism 5 and the frame member 25 of the seedling planting device B, and
A pin 27 having a small diameter pin portion 27a for engagement protruding from both sides is fixed to the piston rod of the damper 26, and the frame member 25 has a notch 2 into which the small diameter pin portion 27a can be inserted and engaged from above.
A member 28 having a shape 8a in top view is fixed, and the pin 27 and the notch 28a form an engagement mechanism 29 that can be freely engaged and detached. The engagement mechanism 29 may be provided on the link mechanism 5 side. 30 in the diagram is damper 2
This is a support frame made of an elastic material (spring material, rubber, plastic) formed into a substantially U-shape to support and fix the damper 26 when the damper 6 is not in use.

As shown in FIGS. 8 to 10, horizontal transmission cases 34 for transmitting power to each planting case 33 are provided on both sides of a central transmission case 32 which is interlocked with the driving part 3 via a connecting rod 31, A planting clutch 35 is provided at a connecting portion between each planting case 33 and the horizontal transmission case 34 to constitute a planting transmission mechanism. A clutch actuating arm 36 is protruded from the clutch 35, and four wires 37 attached to each actuating arm 36 are combined into a pair of left and right wires and are interlocked and connected to an operating lever 38. A relay link 40 that can swing around the horizontal axis X is attached to the lower link 5a within the tensioning route of the wire 37.
A wire 37 is installed from the planting case 33.
a to the relay link 40, the U-shaped portion 3
It is constructed so that it can be attached and detached via 7b.

[Brief explanation of the drawing]

The drawings show an embodiment of the rice transplanter according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a vertical side view showing the damper mounting structure, Fig. 3 is a sectional view taken along the - line in Fig. 2, and Fig. 4 The figure is an exploded perspective view of the mounting structure of the lifting link and seedling planting device, Figure 5 is an enlarged front view of the main part of Figure 4, Figure 6 is an enlarged vertical sectional side view of the main part of Figure 4, and Figure 7 is an enlarged longitudinal sectional view of the main part of Figure 4.
The figure is an overall side view when running on the road, Figure 8 is a plan view of the planting clutch, Figures 9 and 10 are respectively,
They are a plan view and a vertical side view showing a connection mechanism of a planting clutch actuation wire. A... Traveling vehicle body, B... Seedling planting device, 5... Lifting link mechanism, 6... Suspension spring, 7... Hydraulic cylinder, 26... Damper, 2
7... Pin, 28a... Notch, 29... Engagement mechanism.

Claims (1)

[Scope of utility model registration request] A hydraulic cylinder 7 equipped with a suspension spring 6 connects the lifting link mechanism 5 installed on the traveling vehicle body A.
This is a rice transplanter in which a seedling planting device B is removably connected to the tip of the link mechanism 5, and the rice transplanter is moved up and down by a frame member 25 on the side of the seedling planting device B and the link mechanism 5. Flexible damper 2
6, and one end of this damper 26 is pivotally connected by a removable engagement mechanism 29 using a notch 28a and a pin 27.