JPH0220894Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention removably connects a multi-row seedling planting device to the rear end of an elevating link mechanism installed on a traveling vehicle body, and also connects the seedling planting device after the connection is disconnected to the rear end of a lifting link mechanism installed on a traveling vehicle body. The present invention relates to an improvement in an auxiliary wheel mounting structure for a rice transplanter, which is configured to be able to be towed and connected to the elevating link in a vertically elongated position, and the auxiliary wheel is configured to be detachably attached to the lower part of the seedling planting device.

In general, a multi-row rice transplanter has a planting device such as a seedling stand on which planted seedlings are placed, which protrudes laterally from the machine, and when the machine is moved on the road, Alternatively, when the machine is mounted on a transport vehicle for transportation or stored in a barn or the like, it is common to reduce the lateral width of the machine by changing the connection position of the seedling planting device as described above.

In this connection procedure, the lifting link mechanism is driven up and the seedling planting device is separated from the ground surface by an appropriate distance, and then the auxiliary wheels are inserted below the seedling planting device, and the seedling planting device and the auxiliary wheels are connected. Then, the lifting link mechanism and the seedling planting device are uncoupled, and then the rear part of the machine is moved close to the side of the seedling planting device, and the lifting link mechanism and the side of the seedling planting device are connected. It is completed by concatenating the .

And, 1 of the mounting structure of the seedling planting device and auxiliary wheels.
As an example, there was a conventional one shown in FIG. That is, a plate-shaped support frame 15 is welded and fixed to the upper surface of a frame 14 that pivotally supports a pair of left and right wheels 13, 13, and the auxiliary wheel 12 is configured. Two plates 17, 17, which are spaced apart by the thickness of The bolts 25, 25 are inserted through the bolts 17 and tightened, and this method has the following disadvantages.

With the structure described above, the fixation of the engagement connection is completed by inserting bolts, so it takes time and effort to match the bolt insertion holes of the support frame and plate.
Furthermore, it took time to tighten the bolts.

The present invention was developed in view of the above circumstances, and by rationally modifying the connection structure between the seedling planting device and the auxiliary wheels, the seedling planting device and the auxiliary wheels can be quickly connected. It has a purpose in making it happen.

A feature of the present invention is that the seedling planting device and the supporting frame of the auxiliary wheels are provided with two sets of engagement mechanisms that engage and disengage from the direction orthogonal to the towing direction, and one of the engagement mechanisms is automatically engaged. It has an engaging lock structure, and its effects are as follows.

In other words, as soon as the seedling planting device and the auxiliary wheels are engaged and connected, the engagement is automatically maintained, which eliminates the hassle of aligning the insertion holes and tightening the bolts, which is required when using bolts. Save, quickly and
Reliable connection is now possible.

Next, 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 steering drive wheels 1, 1 and a pair of left and right drive wheels 2,
2 are attached to the front and rear of a body frame having an engine 3 in the front and a driving part 4 in the center to form a traveling vehicle body A, and a forward-leaning seedling stand on which pine-shaped seedlings W can be placed. Stand 5, 8 planting arms 6...
An 8-row rice transplanter is constructed by connecting a seedling planting device 9 having a transmission case 7 and floats 8 to a traveling vehicle body A via a link mechanism 11 that can be raised and lowered by a hydraulic cylinder 10 on the traveling vehicle body A side. has been done.

What is shown in FIG. 2 is a state in which the seedling planting device 9 is connected to the traveling body A of the rice transplanter so that it can be towed, and the state of the seedling planting device 9 during work up to this state is shown. I will explain the work step by step. First, the first
The elevating link 11 of the rice transplanter in the state shown in the figure is further driven upward. Then, the seedling planting device 9 is held at that height, and then, as shown in FIG. In the example, the seedlings are sent to the lower part of the seedling planting device 9 from behind the seedling planting device 9. In addition, the auxiliary wheels 12 have idle wheels 1 on the left and right.
A plate-shaped support frame 15 is welded and fixed along the direction of the pipe frame 14 to the upper part of the "gate"-shaped pipe frame 14 that pivotally supports the pipes 3 and 13.
In this case, the engagement grooves 16a and 16b having different depths have different heights from the pipe frame 14, and are located approximately on the left and right sides of the support frame, respectively, and cutouts are formed so that the openings face in the same direction. has been done. Two plates 17, 17 are welded and fixed to the pipe-shaped case portion of the transmission case 7 of the seedling planting device 9 with an interval equal to the thickness of the plate-shaped support frame 15. two plates 17,
17, engagement pins 18a and 18b are arranged so as to be aligned with the ends opposite to the openings of the engagement grooves 16a and 16b. These engaging pins 18a, 18b are connected to the seedling planting device 9 by the auxiliary wheels 12.
When sent downward, the engagement grooves 16a, 1
6b. A swinging arm 20 having a swinging shaft 19 perpendicular to the surface of the support frame 15 is disposed outside the upper engagement groove 16b, and the arm end 20a has an engagement pin that engages in the engagement groove 16b. When the arm 18b is sent in the engagement direction, the cam surface of the end comes into contact and swings upward to enable engagement, and when the engagement is completed, the arm end 20a maintains the engagement. It is biased by a spring 21. The release of this engagement is performed at the other end 2 of the arm end 20a.
This is done by manipulating 0b. Then, the arm 20 and the spring 21
are collectively referred to as the engagement lock structure 22.

In this way, the seedling planting device 9 of the auxiliary wheel 12
When the connection to the lifting link mechanism 11 is completed, the lifting link mechanism 11
is lowered, the link mechanism 11 and the seedling planting device 9 are uncoupled, the traveling body A is moved, the rear part of the body is brought close to the side end of the seedling planting device 9, and the transmission of the seedling planting device 9 is lowered. The work is completed by connecting the elevating link mechanism 11 to the connecting portion 7a at the side end of the case 7.

The engagement pin 18a and the engagement groove 16a
is collectively referred to as the engagement mechanism 23, and the engagement pin 18b and the engagement groove 16b are collectively referred to as the engagement mechanism 24.

Incidentally, this engagement lock structure 22 may be installed on the transmission case 7 side of the seedling planting device 9.

[Brief explanation of the drawing]

The drawings show an embodiment of the auxiliary wheel mounting structure of a rice transplanter according to the present invention, and FIG. 1 is an overall side view, FIG. 2 is an overall plan view showing the traction state of the seedling planting device, and FIG.
The figure is a front view of the auxiliary wheels in a connected state, and FIG. 4 is a front view of the auxiliary wheels in a conventional connected state. 9...Seedling planting device, 11...Elevating link mechanism,
12... Auxiliary wheel, 23... Engagement mechanism, 24...
Engagement mechanism, A... traveling vehicle body.

Claims (1)

[Scope of utility model registration request] A multi-row seedling planting device 9 is removably connected to the rear end of the lifting link mechanism 11 installed on the traveling vehicle body A, and the seedling planting device 9 that has been disconnected is placed in a vertical position with respect to the traveling direction of the vehicle body. This is an auxiliary wheel mounting structure for a rice transplanter, in which the auxiliary wheel 12 is configured to be able to be connected to the lifting link 11 for traction, and the auxiliary wheel 12 is configured to be detachably attached to the lower part of the seedling planting device 9. and a support frame 15 for the auxiliary wheel 12.
The rice transplanter is provided with two sets of engagement mechanisms 23 and 24 that are engaged and disengaged from a direction perpendicular to the towing direction, and one of the engagement mechanisms 23 or 24 is configured to have a rotating engagement lock structure. Machine auxiliary wheel mounting structure.