JP2002204603A - Weeding apparatus and rotary weeding mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide both a weeding apparatus and a rotary weeding mechanism capable of reducing load of weeding operation. SOLUTION: This weeding apparatus A is equipped with a riding part 30 at the rear side of a self-propelled part 10 so as to make the self-propelled part pull the riding part in a weeding apparatus which is furnished with the self-propelled part 10 traveling by itself by rotating a wheel 12 by the drive of a driving source 11 and a weeding part 40 connected to a part closer to the front than an axes 13 of the self-propelled part 10 and carries out a weeding operation while traveling the self-propelled part 10. This rotary weeding mechanism 44 comprises a scraping out face 44b-1 side of a vane part 44b formed in a recessed state, a lower side piece part 44b-2 of the vane part 44b formed in a projected curved state so as to be brought into contact with the soil surface, rotates a rotary base part 44a by bringing the lower side piece part into contact with the soil surface and stirs and scrapes out soil by the vane part 44b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weeding device for weeding a weed growing around a crop, and more particularly to a weeding device and a rotary weeding mechanism suitable for weeding work in paddy fields.

[0002]

2. Description of the Related Art Conventionally, this type of weeding apparatus has a weeding section in front of the self-propelled section and a handle at the rear of the self-propelled section. There is a construction in which weeding is performed by a weeding section. According to this weeding device, the worker walks in the paddy field in accordance with the self-propelling of the self-propelled vehicle while grasping the handle at the rear of the self-propelled part, and pushes the handle downward when turning. With the axle as a fulcrum, the weeding part on the front side had to be lifted from the paddy field. In addition, as a mode of the weeding section, as described in JP-A-5-252801, a plurality of steel wires are radially provided on a rotating base, and the steel wires are rotated by contacting the steel wires with the soil surface. Some have a rotating weeding mechanism that stirs the soil to remove weeds by the rotating steel wire.

However, in the above-mentioned conventional weeding device,
In a paddy field where feet are buried in the soil and it is difficult to walk, it was necessary to walk along with the traveling of the self-propelled vehicle, and the labor burden associated with the walking was heavy. In addition, it was a burdensome operation to lift the relatively heavy weeding section from the paddy field by pushing the handle downward during the change of direction. In addition, in the above-mentioned rotary weeding mechanism, since the structure was such that the soil was stirred by a plurality of rotating steel wires, the contact area between each steel wire and the soil was small, and the effect of stirring and scraping the soil could not be expected. . Therefore, in the above-mentioned rotary weeding mechanism, weeds cannot be dug up from the root, and the weeds may grow again.Weeds that have not been successfully weeded or weeds that have regrown can be removed by using the same weeding device again. This resulted in unnecessary labor burdens, such as weeding and manual weeding, and improvements were required.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a weeding apparatus and a rotating weeding mechanism which can reduce the burden of weeding work. .

[0005]

Means for Solving the Problems As a technical means of the present invention for solving the above-mentioned problems, a first aspect of the present invention is a self-propelled section which rotates a wheel by driving a driving source and self-propelled, A weeding section provided on the front side of the section, and a weeding device that performs weeding by the weeding section while running the self-propelled section by itself, wherein the self-propelled section is towed behind the self-propelled section. It is characterized in that the passenger portion is provided as described above.

Here, the provision of the riding portion so as to be pulled by the self-propelled portion means that the riding portion formed so that an operator can ride thereon is pulled by the self-propelled portion by a connecting member such as a rod-shaped member. means. In addition, the riding portion may be a mode in which the vehicle is pulled by the self-propelled portion and travels on the soil surface with the worker placed thereon. Preferably, the inclined portion inclined forward and obliquely upward at the front end thereof. , And run while sliding on the soil surface. Further, the riding portion may be configured in a mode having buoyancy to reduce sliding contact resistance with the soil surface during paddy field running, or may be configured in a mode having wheels, the mode having the buoyancy. Examples include a mode in which the riding portion is formed in a boat shape, a mode in which the riding portion is formed in a hollow shape, and a mode in which the riding portion is formed of a material having buoyancy such as a foam. Also, when configured in a mode having wheels, especially when traveling in the field,
The running resistance can be reduced.

In the second aspect, the riding portion is connected to the self-propelled portion via a connecting rod, and the connecting portion is connected to a front side of an axle of the self-propelled portion and a lower side of the axle. It is characterized by having.

Further, in the third aspect, the riding portion is connected to the self-propelled portion via the connecting rod so as to be vertically rotatable, and the self-propelled portion is rotated when the self-propelled portion is rotated upward. It is characterized in that it is hung so as to be able to be hung and detached from the rear axle of the section.

According to a fourth aspect of the present invention, the weeding part is a rotary weeding comprising a plurality of slats provided radially on the outer periphery of a rotating base that is pivotally supported so as to rotate in a state inclined with respect to the soil surface. The rotary weeding mechanism includes a mechanism, wherein the scraping surface side of the slat portion is formed in a concave shape, and the lower side portion of the slat portion is formed in a convex shape so as to contact the soil surface, The rotating base is rotated by contacting the lower side to the soil surface, and the soil is agitated and scraped off by the slats.

A rotary weeding mechanism according to a fifth aspect of the present invention is a rotary weeding mechanism comprising a plurality of wings provided radially on the outer periphery of a rotating base that is pivotally supported so as to rotate while being inclined with respect to the soil surface. The scraping surface side of the wing plate portion is formed in a concave shape, and the lower piece portion of the wing plate portion is formed in a convex shape so as to be in contact with the soil surface, and the lower side portion is formed. It is characterized in that the rotating base is rotated by being in contact with the soil surface, and the soil is agitated and scraped off by the slats.

According to the above technical means, the present invention has the following operations. (Claim 1) If the worker runs the self-propelled part while riding on the passenger part, the passenger part is driven by the self-propelled part and runs. (Claim 2) Since the connecting portion of the connecting rod is on the front side of the axle and below the axle, it is possible to prevent the weeding portion from floating upward due to the traveling of the self-propelled portion. (Claim 3) The self-propelled part can be changed direction by rotating the passenger part, lifting it from the soil surface and hooking it on the self-propelled part.
Because the passenger section is hung behind the axle of the self-propelled section,
By pushing downward on the rear part of the axle, such as the rear end of the riding part and the handle part on the rear side of the self-propelled part, the force to lift the weeding part on the front side of the axle upward is stopped. Assisted by the weight of the ride that is made. (Claim 4) In addition to the above functions, the wing plate portion agitates and scrapes the soil on the concavely curved surface, so that the contact area between the soil and the wing plate portion is large and the agitating and scraping action is excellent. (Claim 5) Since the blade portion agitates and scrapes the soil on the concavely curved surface, the contact area between the soil and the blade portion is large and the stirring and scraping action is excellent.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show an example of a weeding device according to the present invention.

This weeding device A is a self-propelled part 1 which is driven by a driving source 11 to rotate left and right wheels 12 and 12 to run by itself.
0, a handle 20 connected to the rear part of the self-propelled part, a riding part 30 connected to be pulled by the self-propelled part 10,
A weeding section 40 connected to the front side of the self-propelled section 10 via an angle adjusting mechanism 50, and rides on the riding section 30 with the handle 20 grasped, and weeds while the self-propelled section 10 is self-propelled. The section 40 is configured to perform a weeding operation.

The self-propelled section 10 is configured to rotate wheels 12, 12 on both sides of the axle 13 via an axle 13 by driving of a drive source 11, and an outer peripheral surface of each wheel 12 is provided with a paddy field. A non-slip piece (not shown) is protruded so that the vehicle can travel without slipping.

The steering wheel 20 is connected to a position behind the axle 13 at the rear of the self-propelled portion 10 and is moved left and right so that the traveling direction of the wheels 12, 12 can be slightly corrected. Also, when pushed downward, the weeding section 4
0 is arranged so as to rotate upward with the axle 13 as a fulcrum.

As shown in FIG. 2, the riding portion 30 has left and right towing sled portions 31, 31 provided in parallel at predetermined intervals and fixed to the left and right ends of a T-shaped rod 32.

Each of the towing sled portions 31 is formed in a substantially sled shape in a side view having an inclined portion 31a inclined forward and obliquely upward at a front end thereof, and is formed in a boat shape having a hollow interior and an open upper portion. Buoyancy reduces contact resistance with the soil surface when traveling in paddy fields. Left and right towing sled 3
The footrests 33 are placed and fixed on the upper surfaces of the openings of the first and the 31st. The spacing between the left and right towing sleds 31, 31 is set such that a worker who has left and right feet on the left and right footrests 33, 33 can straddle two crops in a paddy field.

The riding section 30 is connected to the self-propelled section 10 via the connecting section 60 on the front side of the axle 13 and the axle 1.
3 is connected to the lower side of the self-propelled part 10 behind the axle 13 when it is turned upward by the hooking / unlocking mechanism 70. Is done.

The connecting portion 60 is formed by connecting the rear ends of both left and right connecting rods 61, 61 with a substantially U-shaped connecting bracket 62 in plan view.
It is connected and fixed by. Each connecting rod 61 is formed in a substantially arcuate shape in a side view so as to extend from the rear side to the front side of the axle 13 through the upper side of the axle 13, and the front end thereof is formed by the self-propelled part 1.
The first frame 14 is rotatably mounted on the front side of the axle 13 and below the axle 13.

The connection portion 61a between the front end of each connecting rod 61 and the machine frame 14 of the self-propelled portion 10 is arranged forward of the axle 13 and below the axle 13 as described above. This is for avoiding the force of the weeding part 40 trying to float upward due to the reaction force when the running part 10 is run.

That is, while the self-propelled part 10 is traveling, the riding part 30
, The total load of the weight of the worker and the weight of the riding portion 30 itself is applied downward, and the downward load is transmitted to the connecting portion 61 a via the connecting portion 60. Further, since the riding portion 30 is towed through the connecting portion 61a via the connecting portion 60, a load is applied to the portion below the axle 13 so as to be pulled rearward. Therefore, the downward load and the rearward tensile load acting on the connection portion 61a are:
The running of the self-propelled section 10 opposes the force of the weeding section 40 trying to rise, and the rising of the weeding section 40 during running is avoided.

At the rear end of the connecting bracket 62,
The front end of the T-shaped rod 32 of the riding part 30 is connected to be able to rotate horizontally by a bolt 62a and a nut 62b which are vertically fixed.

Further, thrust bearings 62c, 62c are interposed between the bolt 62a and the nut 62b so as to sandwich the front end of the T-shaped rod 32, and the T-shaped rod 32 is bolted by these thrust bearings 62c.
It is configured to rotate in a substantially horizontal direction with 2a as a support shaft. Therefore, while the weeding device A is running, the steering wheel 2
0 is moved to the left or right so that the connecting portion 60 is bent at the bolt 62a.
Will be corrected.

The hanging mechanism 70 includes a substantially L-shaped operating rod 71 and a substantially U-shaped engaging piece 72. The operating rod 71 has a hook piece 71a integrally formed at the front end thereof. The lower end of the hook piece 71a is pivotally supported by the front end of the T-shaped rod 32 so as to be vertically rotatable. The hooking piece 72 is fixed to the rear end of the machine frame 14 of the self-propelled section 10 via a bracket so that the hook piece 71a of the operating rod 71 can be hooked and removed.

According to the hanging mechanism 70, as shown in FIGS. 3 (a) and 3 (b), when the rider 30 is lifted and turned upward by the operator, the operating rod 71 is moved upward. The hook piece 71a hooks on the hook piece 72.

In this engagement state, the weight of the riding portion 30 is applied to the self-propelled portion 10 on the rear side of the axle 13. Therefore, when changing the direction of the weeding device A, the operator pushes the handle 20 or the rear end of the riding portion 30 downward by the weight of the riding portion 30 being engaged, and the weeding portion 40 located forward of the axle 13 is moved forward.
Will be assisted in trying to lift the upper part.

When the hook is released, the rider 30 with which the worker is engaged is lifted slightly, and the rear end of the operating rod 71 is manually rotated upward, or the worker is required to lift the rider. The rear end of the operation rod 71 may be rotated upward by a reaction when the part 30 is slightly lifted.

The weeding section 40 is provided on a support rod 41 which is substantially perpendicular to the traveling direction of the self-propelled section 10 and, in order from the front side, a sled section 42.
, The weeding tine 43, the rotary weeding mechanism 44, and the weeding rotor 45 are respectively supported via brackets or the like, and the machine frame 14 of the self-propelled portion 10 is supported via an angle adjusting mechanism 50.
Is connected to the front end side of the.

As shown in FIG. 4, the support rod 41 is configured so that each of the left and right portions thereof can be bent upward in order to improve the transportability of the weeding device A.

The sled portion 42 has a substantially plate shape having an inclined surface 42a facing forward and obliquely upward. When the vehicle is running, the lower end of the weeding tine 43, the rotary weeding mechanism 44, and the weeding rotor 45 is soiled. A plurality of the support rods 41 are provided in the longitudinal direction of the support rod 41 so as to slide the soil surface between the strips of the crop so as to keep the depth buried therein substantially constant.

The weeding tine 43 is formed by integrally forming a bent weeding rod 43b for sliding contact with the soil surface at one end of a spring part 43a. The root of the weeding tine 43 is relatively shallow. In addition to catching or falling the weeds, when a crop comes into contact with the weed rod 43b, the crop is released backward so as not to be damaged by the elasticity of the spring 43a. That is, since the crops at the weeding time have deeper roots than the weeds, the weeding rod 43
Even if it touches b, the weeding bar portion 43b is bent by the resilience of the spring portion 43a, so that the weeding bar portion 43b can escape backward without being hurt.

The weeding tines 43 are provided in a pair so as to be symmetrical with the weeding rod 43b facing inward. Then, a plurality of the pair of weeding tines 43 are provided in the longitudinal direction of the support rod 41 so that a single crop passes between them. For example,
Since the weeding device A in the illustrated example corresponds to a paddy field in which crops are planted in six rows, a pair of weeding tines 43,
Six sets 43 are provided in the longitudinal direction of the support rod 41 at intervals corresponding to the interval between the rows where the crops are planted.

The rotary weeding mechanism 44 is provided with a plurality of blades 44b made of metal or resin material on the outer periphery of a rotating base 44a pivotally supported so as to rotate in a state inclined with respect to the soil surface. The lower side 44b-2 of the wing plate portion 44b is rotated by contacting the ground with the ground surface, and the soil is agitated and scraped off on the surface of the wing plate portion 44b.

In order to improve the efficiency of scraping the soil, each of the slats 44b is formed with a concave surface on the scraping surface 44b-1 side. The wing plate portion 44b is formed in a convex shape so that the lower side portion 44b-2 is in contact with the soil surface, and rotates the rotating base 44a while stirring and scraping the soil by contact with the soil surface. Let it. Further, the wing plate portion 44b
Has a convex surface portion 44b-3 having a slightly increased surface area in a convex shape so as to scratch the soil surface at the tapered tip portion, and the soil is agitated and scraped out by the convex surface portion 44b-3. Further, the thickness of the wing plate portion 44b is set to a thickness that does not easily deform due to resistance when agitating and scraping the soil.

The rotating weeding mechanism 44 is provided in a pair so that the part to be grounded on the soil surface is symmetrical with the part facing inward. A plurality of the pair of rotary weeding mechanisms 44, 44 are provided in the longitudinal direction of the support rod 41 at the rear side of the pair of weeding tines 43, 43 so that a single crop passes between them. Therefore, in the weeding device A of the illustrated example, the pair of rotary weeding mechanisms 4
Six pairs of the rollers 4 and 44 are provided in the longitudinal direction of the support rod 41 at intervals corresponding to the interval between the rows where the crops are planted.

The rotary weeding mechanism 44 having the above-described structure is similar to that shown in FIG.
As shown in (a) and (b), the soil is agitated and scraped off on the surface of the wing plate portion 44b, thereby digging up the roots of the weeds that have been caught or knocked down by the weeding tine 43 and damaged. At this time, crops with deeper roots compared to weeds,
Since it passes between the pair of rotary weeding mechanisms 44 or 44, or the rotary weeding mechanism 44 rotates at the traveling speed of the self-propelled unit 10, the radial weeding mechanism 44 escapes backward and forward between the front and rear of the radial wing plate part 44b, causing pain. Never be.

The weeding rotor 45 includes a plurality of rod-shaped members 45.
a is formed in a cage shape around the horizontal axis, and is rotatably supported by the support rod 41, and is provided in the longitudinal direction of the support rod 41 so as to correspond to the space between the crops. The weeds between the rows of the crop are pushed and buried in the soil by the plurality of rod-shaped members 45a.

The angle adjusting mechanism 50 includes a crank operating rod 51.
Is configured to adjust the angle of the weeding part 40 with respect to the soil surface by the rotation operation of the weeding tine 43, the rotating weeding mechanism 44, and the depth at which the lower end portion of the weeding rotor 45 is buried in the soil. Used for

According to the weeding section 40 having the above structure, the weeds near the crop are gradually weeded by the weeding tine 43 and the rotating weeding mechanism 44, and the weeds of the crops that are not weeded by the weeding tine 43 and the rotating weeding mechanism 44 are removed. Is buried in the soil by the weeding rotor 45.
Therefore, with the combined weeding means, efficient weeding can be performed without damaging the crop.

Although the riding section 30 having the above-described structure is configured so that the running resistance is mainly reduced during traveling in the paddy field, the riding section 30 may be used to travel in a field. In this case, it is preferable to reduce the running resistance when traveling in the field by means such as providing wheels on the towing sled portion 31 of the riding portion 30.

As shown in FIG. 6, the weeding section 40 having the above-described structure can be provided in a weeding apparatus B having no riding section 30. The configuration in that case will be described below.

The weeding device B includes a self-propelled portion 10 that rotates by driving a drive source 11 to rotate wheels 12 and a self-propelled portion, and a weeding portion 40 provided in front of the self-propelled portion 10. In a weeding apparatus that performs weeding work by the weeding unit 40 while the running unit 10 is running, the weeding unit 40 is configured such that the weeding unit 40 is supported by a rotating base 44a that is pivotally supported so as to rotate while being inclined with respect to the soil surface. And a rotary weeding mechanism 44 provided with a plurality of wing plate portions 44b in a radial pattern. The rotary weeding mechanism 44 is formed such that the scraping surface side of the wing plate portion 44b is formed in a concave shape, and is provided below the wing plate portion 44b. The side piece 44b-2 is formed in a convexly curved shape so as to be in contact with the soil surface, and the lower base piece 44b-2 is grounded to the soil surface, thereby rotating the rotating base 44a and the wing plate. It is configured to agitate and scrape the soil at the portion 44b

This weeding apparatus B is configured so that the worker walks in a paddy field or a field in accordance with the traveling of the self-propelled section 10. The riding section 30, the connecting section 60, and the hanging mechanism 70 are described above. Since it has the same configuration as the above-mentioned weeding device A except that it is not provided, the same reference numerals are given to the same portions, and the duplicated description will be omitted.

According to this weeding device B, since the slat 44b agitates and scrapes the soil on the concavely curved surface, the contact area with the soil is larger than in the prior art using steel wires, and In addition to the high stirring efficiency, it is also excellent in the effect of scraping the soil, so that the roots of the weeds can be cut out, and the weeds can be stirred with the soil.

[0045]

Since the present invention is configured as described above, it has the following effects. According to the first aspect, the weeding operation can be performed while riding on the riding section, so that it is not necessary to walk along with the traveling of the self-propelled section as in the related art. Therefore, the burden of weeding work can be significantly reduced. Furthermore, according to the second aspect, it is possible to prevent the weeding section from trying to float upward due to the traveling of the self-propelled section, so that traveling stability is good. In addition, according to the third aspect, the force for lifting the weeding portion upward by pushing downward the portion behind the axle, such as the rear end of the riding portion and the handle portion behind the self-propelled portion, is reduced. Since it is assisted by the weight of the riding part, it is easy to raise the weeding part onto the water when turning. Therefore, the labor load of the weeding work can be further reduced. Further, according to claim 4 or claim 5, since the wing plate portion is formed on a concavely curved surface, the contact area with the soil is larger than in the prior art using a steel wire, and the soil is removed. It excels in the action of stirring and scraping, and also has high soil stirring efficiency. That is, by stirring and scraping the soil on the concave surface of the slat portion, the roots of the weeds are cut off, the weeds are dug up from the roots, and the weeds are stirred with the soil. Therefore, weeds that have not been dug up from the root as in the prior art do not grow again,
Since weeding can be performed reliably by one operation, the burden of weeding work is small. Moreover, since the soil is highly agitated, cultivating the soil also promotes the growth of the crop.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a weeding device according to the present invention.

FIG. 2 is a perspective view showing a riding section of the weeding device.

FIGS. 3A to 3C are side views sequentially showing a state in which the riding portion of the weeding device is raised and lowered to be hooked and removed.

FIG. 4 is a front view showing a weeding section of the weeding device.

FIGS. 5A and 5B show a state in which weeding is performed by a rotating weeding mechanism of the weeding section, wherein FIG. 5A is a front view and FIG.

FIG. 6 is a side view showing an example of a weeding device without a riding section.

[Explanation of symbols]

 10: Self-propelled part 13: Axle 20: Steering wheel 30: Riding part 40: Weeding part 50: Angle adjusting mechanism 60: Connecting part 61: Connecting rod 70: Hanging mechanism A: Weeding device

Claims (5)

[Claims] 1. A self-propelled part that rotates by driving a drive source to rotate a wheel, and a weeding part that is provided in front of the self-propelled part. A weeding device for performing weeding work by a part, wherein a riding part is provided behind the self-propelled part so as to be pulled by the self-propelled part. 2. The vehicle according to claim 1, wherein the riding portion is connected to the self-propelled portion via a connecting rod, and has a connection portion located forward of the axle of the self-propelled portion and below the axle. The weeding device according to claim 1, wherein 3. The self-propelled part is connected to the self-propelled part via the connecting rod so that the self-propelled part can rotate up and down. The weeding device according to claim 2, wherein the weeding device is detachably hung on a rear side. 4. The weeding part includes a rotary weeding mechanism comprising a plurality of slats provided radially on an outer periphery of a rotating base part pivotally supported so as to rotate in a state inclined with respect to the soil surface, The rotary weeding mechanism is configured such that the scraping surface side of the wing plate portion is formed into a concave shape, and the lower side portion of the wing plate portion is formed into a convex shape so as to contact the soil surface, and the lower side portion thereof is formed. 4. The weeding device according to claim 1, wherein the rotating base is rotated by contacting the ground with a soil surface, and the soil is agitated and scraped off by the slats. 5. apparatus. 5. A rotary weeding mechanism comprising a plurality of slats provided radially around an outer periphery of a rotating base pivotally supported so as to rotate in a state inclined with respect to a soil surface, wherein The scraping surface side is formed in a concave shape, and the lower side portion of the wing plate portion is formed in a convex shape so as to be in contact with the soil surface, and the lower side is grounded to the soil surface to rotate the blade. A rotary weeding mechanism configured to rotate a base and agitate and scrape soil by the slats.