JPH07264902A - Furrow opener for paddy field - Google Patents

Abstract

PURPOSE:To provide a furrow opener for paddy field, capable of continuously forming a furrow having a satisfactory width and a satisfactory depth even in a paddy field where the soil is especially soft and liable to be muddy without heaping up the soil on both the sides of the furrow and, therefore, obstructing draining. CONSTITUTION:This furrow opener involves a digging unit 10 equipped with a digger 11 composed of plural blades welded to a boss body and fixed to a driving shaft projected from the lower part of a power transmission case 21 toward the traveling direction of the machine body and a scattering guide plate 14 existing in a space from the rotational scattering side of the digger 11 to the above, a power transmission unit 20 composed of a power transmission case 21 equipped with a driving shaft at the lower part and an input shaft arranged above it and projected in the opposite direction to the traveling direction of the machine body and a furrow-shaping unit 30 composed of a cylindrical furrow-shaping tool 31 arranged at the lower and rear part of the power transmission case 21. The respective units are connected in a series so that the respective bottom parts may exist on almost the same plane. This furrow opener is equipped with an engine 40 and a steering handle 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a groove forming machine which is mainly used for rice paddy rice management work after rice planting and is used for a water supply and drainage channel.

[0002]

2. Description of the Related Art Growing a groove of an appropriate width and depth in a row or on the shore of a rice planted in a paddy field to supply or drain water to the paddy field according to the growing condition of the rice to grow the rice. Management is done. In the conventional commercially available groove forming machine, a type in which a unicycle is driven forward by engine drive and a triangular steel plate attached to the rear side pushes the soil left and right has become popular.

[0003]

However, in the above-mentioned prior art, when the soil is hard, the groove formed is too shallow to be effective, and when it is too soft, the wheel swirls and it becomes difficult to move forward. Even the groove formed by pressing was not practical because there was a problem that the soil pressed on both sides slipped into the groove after the machine passed and the groove was filled.

Further, even when a groove having a proper soil condition and a sufficient width and depth is formed, the soil pressed to the left and right has a drawback that it swells up on both sides of the groove and hinders drainage.

The present invention has been made in view of the above-mentioned problems of the above-mentioned conventional techniques, and its object is to continuously and sufficiently perform even in a paddy field where soil is soft and becomes muddy. It is an object of the present invention to provide a groove forming machine for a paddy field, which can form a groove having a width and a depth, and does not pile up soil on both sides of the groove to obstruct drainage.

[0006]

In order to achieve the above object, in a paddy groove forming machine of the present invention, an excavation body in which a plurality of vane plates are welded to a boss body is attached to a body from a power transmission case described later. An excavation portion fixed to a drive shaft protruding toward the forward direction and provided with a scattering guide plate over the side of the rotary flip-up side of the excavation body, and the drive shaft provided below the machine body The power transmission part including a power transmission case provided with an input shaft projecting in the direction opposite to the forward direction and the groove shaping part provided with a tubular groove shaper behind the lower part of the power transmission case have substantially the same bottom. It is one that is connected in series in a planar manner.

An input shaft pipe supporting an input shaft protruding rearward of the upper portion of the power transmission case is provided, an engine mounting frame is fixed to a rear end portion of the input shaft pipe, an engine is installed above, and the body is manually operated. If the operation handle that pushes forward is extended from the lower part of the power transmission case toward the upper rear, the weight balance of the machine body is good and the operability is good.

[0008]

The groove forming machine configured as described above is placed between the rows of rice planted in a flooded paddy field one to two months after planting or at the shore, and the engine is started to grasp the operation handle from the rear. When moving forward while pressing against the paddy field, the blades of the rotating excavation body scrape off the mud and splash it laterally along the scatter guide plate, and the mud is diffused and scattered over a wide range.

The tubular groove shaper provided continuously behind the excavation section and the power transmission section was excavated by the rotating blade plate of the excavation section in response to the operating pressure due to the weight of the machine body such as the engine and human power. The wall surface of the groove is pressed and shaped so as to be painted. Further, the pitching is suppressed so that the groove depth becomes constant, and the traveling of the machine body is stabilized so that the traveling direction does not swing to the left and right.

Since the groove shaper has a cylindrical shape, mud on the upper surface of the groove shaper is easily slipped off, and there is no need for excessive operation force due to accumulation of mud during work. The cylindrical shape is not limited to a circular shape and may be a polygonal shape, but it is better not to have a flat portion on the upper surface portion.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, 10 is an excavation part, 20 is a power transmission part, 30 is a groove shaping part, 40 is an engine, and 50 is an operation handle.

In the excavation section 10, a excavation body 11 in which a plurality of vane plates 13 are welded to a boss body 12 having an inner diameter provided with a key groove or the like.
Is detachably fixed to the drive shaft 23 provided so as to project from the power transmission case 21 in the forward direction of the machine body with a screw or the like. As shown in FIG. 4, the vane plate 13 does not scatter the mud in the forward direction, and in order to assist the pushing forward movement action by human power, the front base 14 of the machine body forward direction is curved forward in the axial rotation direction, and the boss body 12 is curved. It is preferable that the front end portion 15 on the front side in the forward direction of the machine body is further advanced to the front side in the rotational direction to be curved. Further, a scattering guide plate 16 is provided above the side of the excavation body 11 on the side where the excavation body is flipped up so as to diffuse and discharge the mud excavated by the rotation of the excavation body 11 to the side of the machine body. It is fixed to 21 with screws or the like.

The power transmission case 21 of the power transmission unit 20 is
A drive shaft 23 projecting in the forward direction of the machine body is supported downward, and an input shaft 22 projecting upward in a direction opposite (rearward) to the forward direction of the machine body is supported. The input shaft 22 and the drive shaft 23 are respectively sprockets. 24 and 25 are fitted and the rotational power is transmitted by the chain 26. The operation handle 50 extends rearward and upward from the lower portion of the power transmission case 21, and supports the input shaft 22 protruding rearward of the upper portion of the power transmission case 21. The rear end portion of the input shaft pipe 27 or an engine mounting frame 41 described later. Connect with and fix firmly.

An engine mounting frame 41 is provided at the rear end of the input shaft pipe 27, and an engine 40 is installed above the engine mounting frame 41.
Rotational power of the engine is transmitted to the input shaft 22 protruding rearward of the upper portion of the power transmission case 21 by using an appropriate power transmission means such as a pulley and a V belt. 42 is a belt cover.

Reference numeral 31 is a groove shaper, and in the present embodiment, a cylinder made of synthetic resin is used to reduce the weight of the machine body as much as possible to improve the operability and stabilize the sliding performance. To the inside of the cylinder, and the styrofoam molding material 32 is inserted into
The rear end is closed by a closing plate 33 to prevent the intrusion of mud and water. Further, the lower bottom of the excavation body 10, the lower bottom of the power transmission case 21, and the lower bottom of the groove shaping section 30 are connected in series substantially in the same plane.

[0016]

Since the paddy field groove forming machine of the present invention is configured as described above through the embodiments, it is possible to form grooves having a sufficient width and depth continuously even in a paddy field where soil is soft and becomes muddy. However, the soil will not be piled up on both sides of the ditch to prevent drainage. Also, since the machine weight is light and the balance is good, it is easy to handle and the operability during groove forming work is good.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a groove forming machine for paddy fields according to the present invention.

2 is a front view of the paddy field groove forming machine shown in FIG. 1. FIG.

FIG. 3 is a cross-sectional view of a main part of a groove forming machine for paddy fields.

FIG. 4 is an explanatory view of an excavated body used in a groove forming machine for paddy fields.

5 is an explanatory view of a welding state of a boss and a blade of the excavation body shown in FIG.

6 is an explanatory view of the shape of a blade plate of the excavation body shown in FIG.

[Explanation of symbols]

 10 excavation part 11 excavation body 12 boss body 13 vane plate 14 front side base part 15 front side tip part 16 scattering guide plate 20 power transmission part 21 power transmission case 22 input shaft 23 drive shaft 24 sprocket 25 sprocket 26 chain 27 input shaft pipe 30 groove shaping Part 31 Groove shaper 32 Styrofoam molding material 33 Closure plate 40 Engine 41 Engine mounting frame 42 Belt cover 50 Operation handle

Claims (3)

[Claims] 1. A plurality of blades (13) on a boss (12)
The excavated body (11) welded to is fixed to a drive shaft (23) provided so as to project from the power transmission case (21) described later in the forward direction of the machine body, and the excavated body (11) has a rotary flip-up side. The excavation part (10) provided with a scattering guide plate (16) above and the drive shaft (23) are provided below, and the input shaft (22) protruding above the drive shaft (23) in a direction opposite to the forward direction of the machine body is provided. And a groove shaper (3) in which a cylindrical groove shaper (31) is provided in the lower rear part of the power transmission case (21).
0) and the bottom are connected in series so that the bottoms thereof are substantially in the same plane. 2. An input shaft pipe (2) for supporting an input shaft (22) protruding rearward of an upper portion of the power transmission case (21).
7) is provided, an engine mounting frame (41) is fixed to the rear end of the input shaft pipe (27), and the engine (4
0) is installed, and an operating handle (50) for pushing and advancing the airframe by human power is extended from the lower part of the power transmission case (21) toward the rear upper side, and the paddy field according to claim 1. Groove forming machine. 3. When welding the vane plate (13) of the excavation body (11) to the boss body (12), the front side base portion (14) of the vane plate (13) in the forward direction of the machine body is curved forward in the axial rotation direction. The blade plate (13) is welded to the boss body (12).
2. The groove forming machine for a paddy field according to claim 1, wherein the front end portion (15) of the vehicle body forward direction is further curved forward by advancing forward in the rotational direction.