JPH06237602A - Paddy work machine - Google Patents

Abstract

(57) [Summary] [Purpose] In a paddy field work machine that has a protective cover for preventing crop entanglement that prevents crops from getting entangled in the front wheel at the front part of the front wheel, when loading the machine from the ridge into the paddy field. , Prevents damage to the protective cover when it penetrates into the mud. [Structure] The protective cover C is configured so as to be able to be retracted upward with respect to an external force of a certain level or more from below.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paddy field working machine having a front wheel provided with a protective cover for preventing crop entanglement that prevents crops from being entangled with the front wheel.

[0002]

2. Description of the Related Art The above-mentioned paddy field working machine forms a drainage ditch between planted seedlings in order to replace the water stretched in the paddy field several weeks after planting the seedlings. When forming a drainage ditch between seedlings, in order to ensure the versatility of the riding-type rice transplanter, a pair of left and right drainage ditch plate for drainage ditch formation is provided at the rear of the traveling machine instead of the seedling planting device. It is designed such that the working device provided is connected. A front cover for preventing crop entanglement is arranged at the front part of the front wheels to prevent the seedlings from entwining with the front wheels running between the planted seedlings.

[0003]

Since the protective cover provided on the front portion of the front wheel is provided in a fixed state with respect to the vehicle body, when the vehicle body is put into the rice field from the ridges, the slope of the ridgeline is provided. In the case of a steep inclination, the tip of the protective cover plunges into the mud along with the forward leaning posture of the machine body, and the protective cover is damaged.

Therefore, as a means for solving the above-mentioned drawbacks,
If the protective cover is made thicker or has a durable structure using a reinforcing member, there arises a problem that the weight of the paddy field working machine, which is desirable to be lightened, becomes heavy. An object of the present invention is to suppress the increase in the weight of the paddy field working machine and solve the above-mentioned drawbacks.

[0005]

A characteristic configuration of the present invention for achieving the above object is that the protective cover can be retracted upward with respect to an external force from below at a certain level or more.

[0006]

As shown in FIG. 1, when the aircraft is loaded into the rice field from the ridge, the slope of the ridge is steep, so that a plurality of guide rods 9b are formed.
When the tip of the protective cover C made of stabs into the soil and receives a certain upward thrust force from below, the guide rod 9b that comes into contact with the mud surface retreats upward around the horizontal axis P.

[0007]

As a result of the above construction, by making the protective cover retractable upward, the protective cover is made thicker, or a reinforcing member is used to provide a durable structure. It is possible to avoid damage to the protective cover without increasing the weight as compared with the case.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a rear part of a traveling body A of a riding type rice transplanter equipped with a steering front wheel 1, a driving rear wheel 2, a steering handle 3, a driver's seat 4, and a lifting link mechanism 6 driven by a hydraulic cylinder 5. In place of the seedling planting device (not shown), a drainage groove having a pair of left and right drainage groove forming groove cutting plates 7 and a weight 8 for pressing the groove cutting plates 7 and 7 downward. The working device B for forming is connected to the front-rear axis X about the axis X so that it can be rolled freely to form a working machine for paddy fields for forming drainage grooves. A front cover 1 for preventing crop entanglement is provided on the front portion of the front wheel 1 for preventing the seedling from being entangled with the front wheel 1 traveling between the planted seedlings.

As shown in FIGS. 2 and 3, the protective cover C is an inverted U-shaped support plate 9a mounted on the front axle case 1A while straddling the front portion of the front wheel 1, and the support plate thereof. Four guide rods 9b having an inverted U-shape in a plan view, which are provided at predetermined vertical intervals in a state of covering the front portion of the front wheel 1 on the guide rod 9a.
It is composed by. The four guide rods 9b are
When loading the aircraft from the ridges into the rice field, the tip of the protective cover C sticks into the mud due to the forward leaning posture of the aircraft, and if an external force above a certain level acts from below, it is configured to escape upwards. There is. That is, the four guide rods 9b
Are pivotally connected to the support plate 9a so as to be vertically rotatable about the horizontal axis P, and the lower limit stoppers 9c that contact the lower surfaces of the guide rods 9b are provided on the support plate. 9a, the four guide rods 9 are provided.
b is configured so as to prevent the planted seedlings from becoming entangled with the front wheel 1 and to be able to retract upward when an external force above a certain level acts from below.

As shown in FIGS. 4 to 6, in order to prevent the muddy soil from being lifted up by the spokes 1a of the front wheel 1, a disk 10 is attached to the side surface of the front wheel 1. The disc 10 is designed so that the tire rim 1b is clamped by holders 11 provided at three positions on the back side in the circumferential direction, and the holder 11 biases the spring 12 so that the relative distance between the disc and the disc 10 increases. The rim 1b is clamped by tightening the bolt 13.

[Other Embodiments] In constructing the protective cover C so that it can be retracted upward, the four guide rods 9b are provided.
May be constituted by a single guide plate, which is attached to the support plate 9a via a parallel link mechanism so that the entire guide plate can be retracted upward. Any structure may be used to escape.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

[Figure 1] Side view of the entire paddy work machine

[Fig. 2] Side view of the protective cover

FIG. 3 is a perspective view of a protective cover.

FIG. 4 is a cross-sectional view showing a front portion of a front wheel.

FIG. 5 is an exploded view of the front wheel and the disc

FIG. 6 is a rear view of the disc holder.

[Explanation of symbols]

 1 Front wheel C protection cover

Claims (1)

[Claims] 1. A paddy field working machine, comprising a protective cover (C) for preventing crop entanglement, which prevents crops from being entangled in the front wheel (1), in the front part of the front wheel (1). A work implement for paddy fields, in which the cover (C) is configured to be retractable upward with respect to a certain external force from below.