JPH0122410Y2 - - Google Patents

Description

[Detailed description of the invention] This invention has first and second links arranged vertically and parallel to each other, and the front or rear ends of both links are driven up and down by a drive mechanism at the rear or front part of the traveling aircraft. A parallel lifting connection that is pivotably supported so that it can swing freely, and the rear or front parts of both links, which are equidistant from the front pivot part, are pivoted to the front or rear part of the lower part of the planting device so that they can swing up and down. This invention relates to a rice transplanter equipped with a device.

In a rice transplanter in which the planting device is connected to the front or rear side of the traveling machine using this type of parallel lifting connection device, the height of the planting device relative to the traveling machine can be changed in response to changes in the depth of the tiller. However, since the attitude of the planting device relative to the traveling machine does not change in the front-rear direction, such as changing the inclination angle, it is easy to plant seedlings in a stable attitude at any depth of the tiller. In addition, when driving over ridges or on roads, the planting device can be held at a high position relative to the field or road surface, so even if the aircraft pitches or rolls under such driving conditions, the lower part of the planting device will not touch the road surface. This has the advantage that it is less likely to be damaged by collision with the ridge. Therefore, the current situation is that the demand for rice transplanters having such a structure is increasing.

However, with the above rice transplanter, when storing the rice transplanter in a barn, for example, if there are other agricultural machines such as agricultural tractors or external objects on the side of the planting device, the planting device must be positioned above those objects. When it is attempted to store the seedling table, the long seedling table provided vertically protrudes upward, and there is a great possibility that the seedling table will collide with other objects and be damaged. In addition, when a large number of rice transplanters are loaded onto a transport vehicle at the time of factory shipment, the rice transplanter adjacent to the bottom of the planting device may There was a problem that the number of vehicles loaded was reduced and logistics costs increased.

The purpose of the present invention is to eliminate such drawbacks in transportation and storage.

In order to achieve this purpose, the present invention maintains the straight line length between the two pivot parts of the first link at the top to be shorter than the straight line length between the two pivot parts of the second link at the bottom in the rice transplanter mentioned at the beginning. A configuration is adopted in which a telescoping adjustment structure is provided on either the first link or the second link.

With this configuration, the planting device can be placed in a posture in which the lower portion of the side closer to the traveling machine is rotated upward, and the part farther away from the traveling machine is rotated upward, so that the planting device falls toward the traveling machine. When the seedling stand is placed above an outside object and stored in a barn, the upper end of the seedling stand can be rotated forward and downward to make it less bulky, thereby preventing damage. Further, even when transported by vehicle, adjacent machines can be loaded as close as possible in the large empty area formed below the planting device, thereby reducing logistics costs.

Next, embodiments of the present invention will be described.

FIG. 1 shows an example of a rice transplanter, in which the front ends of a first link 2 and a second link 3 are connected to a first lateral pivot shaft 4 at the rear end of a four-wheeled riding type traveling body 1, vertically parallel to each other. , 4, 4, respectively, and the rear portions of both links 2, 3, which are equidistant from the front pivot point, are connected to the vertical link 5 by second lateral pivot shafts 6, 6, respectively. In addition to being pivotally connected, this vertical link 5 is rotatably connected to a longitudinal axis 9 protruding from the front side of a mission case 8 of the planting device 7 about the axis. 10 is a seedling stand of the planting device 7, 11 is a grounding float, and 12 is a planting arm. 13 is a hydraulic cylinder as an example of a lifting drive mechanism.

There are two second links 3, which are arranged in parallel on the left and right sides of the fuselage 1. Said first link 2
A refraction structure 14 is provided in the middle portion in the longitudinal direction. This refractive structure 14 is connected to this first link 2
is divided in the middle in the longitudinal direction, and these divided parts are pivotally connected to each other by a lateral pivot shaft 15. In both link segment pieces 2a, 2a, a pin through hole 1 is provided which becomes concentric when the bending structure 14 is in a non-bending position at its pivot eccentric position.
6, 16', 17, 17' are provided, and this hole 1
For either 6, 16' or 17, 17',
U-shaped pin 1 where one of the U-shaped both end sides penetrates
At 8, a fixing structure 19 is configured to fix the refracting structure 14 in a non-refracting position.

The fixing structure 19 allows the pin 18 to be inserted into and removed from the holes 16, 16', 17, and 17', and the bending structure 14 is fixed at a predetermined angle as shown by the dashed line in FIG. When bent, the pins 18 are inserted into holes 16', 17' at the free ends of the two divided pieces 2a, 2a to fix them in the bent position.

As described above, the first link 2 is provided with the telescopic adjustment structure 20.

FIG. 2 shows the trajectory adjustment structure of the planting arm 12, which is as follows.

The base end of the swinging arm 22, which has the rear part of the planting arm 12 pivoted at its free end, is pivoted and held at one free end of the dogleg-shaped swinging operation arm 23, and the other free end is pushed. It is connected to an operating lever (not shown) provided on the traveling body 1 via a pull release wire 24. 2
Reference numeral 5 designates a long hole that guides and holds the base end of the swing arm 22. In this way, by changing the base end position of the swinging arm 22, the tip trajectory A of the planting claw 26 fixed to the front part of the planting arm 12 is changed, and the amount of seedlings taken is adjusted. Trajectory A seedling stand 10
It can be moved further away to prevent planting.

The structure of the above embodiment may be modified by one or more of the following combinations.

The planting device 7 is disposed on the front side of the traveling machine body 1 via the elevating and lowering connection structure.

As shown in FIG. 3, the telescopic adjustment structure 20 is configured as follows. The first link 2 is made telescopically telescopic and has a pin 21.
To be able to change and fix freely between an extended position having the same length as the second link 3 and a contracted position shorter than the second link 3.

As shown in FIG. 4, the telescopic adjustment structure 20 is configured as follows.

The second link 3 is made telescopically telescopic and can be fixed by changing between a curled position having the same length as the first link 2 and an extended position longer than the first link 2 using a pin 21 that prevents this expansion and contraction. do it like this.

[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 side view showing the adjustment structure of the planting arm, and Figs. 3 and 4 are different embodiments. FIG. 2...First link, 3...Second link, 1...
Traveling body, 7... Planting device, B... Drive mechanism,
20... Telescopic adjustment structure.

Claims (1)

[Claims for Utility Model Registration] 1. First and second links 2, vertically parallel to each other,
3, and the front ends or rear ends of both links 2 and 3 are pivotally supported to the rear or front part of the traveling body 1 by a drive mechanism 13 so as to be able to move up and down, and are spaced equidistantly from this front pivot point. In a rice transplanter equipped with a parallel lifting connection device in which the rear or front parts of both links 2 and 3 are pivotally supported to the front or rear part of the lower part of the planting device 7 so as to be vertically swingable, the upper first
The straight line length between both pivot parts of link 2 is determined by
The first link 2 has a telescopic adjustment structure 20 that can be maintained at a length shorter than the linear length between both pivot parts of the link 3.
Or a rice transplanter installed in either of the second links 3. 2 The telescopic adjustment structure 20 has the first link 2
A bending structure 14 is provided in the middle so that the waist can be bent freely around the transverse axis, and the posture of the first link 2 can be selectively released between a non-bending posture of the bending structure 14 and a posture bent at a predetermined angle. The rice transplanter according to claim 1, which is constructed by providing a fixing structure 19 for fixing the rice transplanter. 3 The telescopic adjustment structure 20 has the second link 3
Utility model registration claim No. 1, which is constituted by a telescopic rod that is telescopic and expandable, and is provided with a fixing device 21 for releasably fixing the telescopic rod in a predetermined contracted position and extended position. The rice transplanter according to item 1.