JP2006109789A - Weeder for paddy field - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To carry out operation for avoiding planted seedlings in rotation by only applying small operation force in easy posture. <P>SOLUTION: The weeder for paddy fields is obtained by attaching a crop space-weeding mechanism 5 for weeding crop spaces of the planted seedlings and interrow space-weeding mechanism 6 for weeding interrow spaces of the planted seedlings to a non-riding traveling machine body 1. In the weeder for paddy field, the crop space-weeding mechanism 5 and the interrow space-weeding mechanism 6 are attached to the rear of the traveling machine body 1. The weeder is equipped with an intervals-regulating mechanism 2 for changing vertical interval between a handle 14 extending to the rear of the traveling machine body and the crop space-weeding mechanism 5 and the interrow space-weeding mechanism 6. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention belongs to a technical field related to a weeder for paddy fields that weeds the weeds that grew around the seedlings planted in the paddy fields.

  Recently, when weeding in paddy fields, the traveling body is equipped with an inter-plant weeding mechanism that weeds between planted seedlings and an interstitial weeding mechanism that weeds between planted seedlings and combines two different types of weeding forms. Therefore, weeds that have grown around the planted seedlings are uniformly weeded.

Conventionally, as a paddy weeder equipped with an inter-strain weeding mechanism and a streak weeding mechanism, for example, those described below are known.
Japanese Patent Application Laid-Open No. 2002-204603 discloses a paddy field weeding machine in which a non-passenger traveling machine body is equipped with a stock weeding mechanism and a streak weeding mechanism in front (extrusion type).

  The paddy weeder according to Patent Document 1 supports a traveling wheel located at the center of the traveling machine body by pushing down a handle extending rearward of the traveling machine body when turning the traveling direction at the end of the rice field. As an example, an operation to avoid planting seedlings is carried out by raising the inter-plant weeding mechanism and the streak weeding mechanism.

  In the paddy field weeding machine according to Patent Document 1, the width of the weeding mechanism in the front-rear direction is long due to the attachment of the interstitial weeding mechanism and the streak weeding mechanism, and the handle is operated to avoid planting seedlings during turning. Since it is required to be pushed down greatly, there is a problem that an operation for avoiding planting seedlings at the time of turning is performed by applying a great operating force in a cramped posture with a bent back.

  The present invention has been made in consideration of such problems, and a paddy field weeding machine capable of performing an operation to avoid planting seedlings at the time of turning by simply applying a small operating force in an easy posture. The issue is to provide.

  In order to solve the above-described problems, the paddy field weeding machine according to the present invention employs the means described in the claims.

  That is, in claim 1, in a paddy weeder comprising a non-passenger traveling machine equipped with an interstitial weeding mechanism for weeding between planted seedlings and an interstitial weeding mechanism for weeding between planted seedlings, It is equipped with an interval adjusting mechanism that can change the vertical distance between the steering wheel and the inter-row weeding mechanism and the inter-row weeding mechanism, which are mounted on the rear side of the traveling body, with the inter-plant weeding mechanism and the inter-row weeding mechanism attached to the traveling body. And

  With this means, the traveling machine body is equipped with an interval adjusting mechanism for rearward mounting (towing type) of the inter-plant weeding mechanism and the streak weeding mechanism to vary the vertical distance between the handle, the inter-strain weeding mechanism, and the streak weeding mechanism. It is possible to lift the inter-strain weeding mechanism and the streak weeding mechanism, and to adjust the lifted height of the handle according to the height of the operator. Also, by attaching the inter-plant weeding mechanism and the inter-row weeding mechanism to the traveling body, the power point of the steering wheel and the inter-plant weeding mechanism and the inter-row weeding mechanism are arranged in the same direction with respect to the fulcrum of the traveling wheel. .

  According to a second aspect of the present invention, in the paddy field weeder of the first aspect, the distance adjusting mechanism is rotatably connected to a connecting pin fixed to the handle and a support frame that supports the inter-plant weeding mechanism and the streak weeding mechanism. And a connecting arm provided with a plurality of engaging grooves that can be selectively engaged with each other.

  In this means, the height lifted by the handle is adjusted by selecting the engaging position between the connecting pin of the distance adjusting mechanism and the engaging groove of the connecting arm.

  According to a third aspect of the present invention, in the paddy field weeding machine of the second aspect, the interval adjusting mechanism includes a spring material that elastically presses the connecting arm toward the connecting pin.

  In this means, the height adjustment position of the handle lifted by the interval adjustment mechanism is held by the spring material.

  According to a fourth aspect of the present invention, in the paddy field weeder according to the second or third aspect, an angle adjusting mechanism is provided between the traveling machine body and the support frame so as to vary an angle in the front-rear direction of the inter-plant weeding mechanism and the streak weeding mechanism. It is characterized by.

  In this means, the angle adjustment mechanism corrects the angle in the front-rear direction of the inter-strain weeding mechanism and the streak weeding mechanism accompanying the adjustment of the interval adjusting mechanism.

  Moreover, in Claim 5, in the weeding machine for paddy fields according to any one of Claims 2 to 4, the supporting frame includes a float and an inter-strain weeding mechanism, a streak weeding mechanism, and a float in addition to the inter-strain weeding mechanism and the streak weeding mechanism. Also, a protective arm protruding downward is supported.

  With this means, the inter-plant weeding mechanism, the streak weeding mechanism, and the grounding of the float can be avoided by the protective arm when pulled up from the rice field.

  The paddy field weeding machine according to the present invention is an interval adjustment mechanism that varies the vertical distance between the steering wheel, the interstitial weeding mechanism, and the streak weeding mechanism by rear mounting (towing type) the interstitial weeding mechanism and streak weeding mechanism on the traveling body. It is possible to lift the stock weeding mechanism and the streak weeding mechanism by lifting the handle, and the height of the handle lifted can be adjusted according to the height of the operator. There is an effect that an operation to avoid planting seedlings can be performed in an easy posture. In addition, since the position (height) of the handle can be adjusted according to the height of the operator, not only the operation to avoid planting seedlings when turning, but also weeding work should be done in an easy posture. There is an effect that can. Also, by attaching the inter-plant weeding mechanism and the inter-row weeding mechanism to the traveling body, the power point of the steering wheel and the inter-plant weeding mechanism and the inter-row weeding mechanism are arranged in the same direction with respect to the fulcrum of the traveling wheel. Therefore, there is an effect that an operation for avoiding planting seedlings at the time of turning can be performed only by applying a small operating force.

  Further, as claimed in claim 2, since the lifted height of the handle is adjusted by the selection of the engaging position between the connecting pin of the distance adjusting mechanism and the engaging groove of the connecting arm, the lifted height of the handle can be easily and reliably set. There is an effect that can be adjusted.

  Furthermore, since the adjustment position of the lifted height of the handle by the distance adjusting mechanism is held by the spring material, there is an effect that the unexpected movement of the handle is prevented and safety is ensured.

  Further, as claimed in claim 4, the angle adjustment mechanism corrects the angle in the front-rear direction of the inter-plant weeding mechanism and the streak weeding mechanism accompanying the adjustment of the interval adjusting mechanism. There is an effect that it is possible to avoid that the weeding surface of the plant is tilted unnecessarily, or the falling posture of the inter-strain weeding mechanism and the streak weeding mechanism is tilted unnecessarily.

  Further, as claimed in claim 5, since the interweed weeding mechanism, the streak weeding mechanism, and the grounding of the float can be avoided by the protective arm when it is lifted from the rice field, the use of the interstitial weeding mechanism, the streak weeding mechanism, and the float is prevented. There is an effect that can be prevented.

  Hereinafter, the best mode for carrying out the paddy weeder according to the present invention will be described with reference to the drawings.

  In this embodiment, a non-passenger self-propelled drive type is used as the traveling machine body 1.

  The traveling machine body 1 is provided with two main frames 13 that sandwich the traveling wheel 12 from the front to the rear of one traveling wheel 12 that is rotationally driven by the engine 11. The main frame 13 is formed as a handle 14 whose upper portion is bent upward and bent to the left and right, and a connecting plate 15 that is rotatably supported on the axle of the traveling wheel 12 is attached in the vicinity of the traveling wheel 12. Is provided.

  At the rear of the main frame 13 of the traveling machine body 1, the inter-weed weeding mechanism 5, the inter-row weeding mechanism 6, the float 7, and the protective arm 8 are mounted by the interval adjusting mechanism 2, the angle adjusting mechanism 3, and the support frame 4.

  The interval adjusting mechanism 2 supports the connection pin 21 fixed to the middle part of the rear side of the main frame 13, the connection arm 22 rotatably supported by the support frame 4, and the connection arm 22 on the support frame 4. The rotation pin 23, the seat 24, a spring material 25 that elastically presses the connection arm 22 toward the connection pin 21, and a locking pin 26 that locks the spring material 25. The connecting arm 22 has an operation handle 221 attached to the upper end of the connecting arm 22 and a plurality of engaging grooves 222 that can be selectively engaged with the connecting pin 21 in the middle. Arranged at intervals. The rotation pin 23 is passed through the lower end portion of the connecting arm 22. The seat 24 is fixed to the support frame 4 and supports the rotation pin 23 so as to be rotatable. The spring member 25 is formed of a torsion coil spring, and is inserted and supported by a locking pin 26 penetrating in the vicinity of the lower end portion of the connecting arm 22 and is suspended between the connecting arm 22 and the support frame 4.

  The angle adjustment mechanism 3 includes a link arm 31 rotatably connected to the traveling machine body 1 connection plate 15 and the rotation pin 23 of the interval adjustment mechanism 2, and a support frame 4 fixed to the seat of the interval adjustment mechanism 2. A receiving seat 32 raised to a position higher than 24, a bearing boss 33 rotatably supported by the receiving seat 32, and a rotary handle 34 inserted into the bearing boss 33 and engraved with a male screw at the tip. And an advancing / retreating arm 35 having one end rotatably supported by the traveling machine body 1 connecting plate 15 and the other end screwed to the rotary handle 34.

  The support frame 4 is composed of square pipes arranged in the lateral width direction of the traveling machine body 1 (direction perpendicular to the strips of the planted seedlings P).

  The inter-plant weeding mechanism 5 is for weeding the inter-plant Y of the planted seedling P, and is not driven to rotate by the ground resistance on the rotary shaft 51 having an inclination that is spaced downward from above the planted seedling P. A rotor blade 52 of the type is rotatably supported. In the rotor blade 52, a substantially rectangular plate blade 522 is radially provided on a sleeve 521 fixed to the rotating shaft 51, and a substantially triangular blade 523 is formed at the tip of the plate blade 522.

  Two interplant weeding mechanisms 5 are arranged so as to confront one row of planted seedlings P from both sides, and a total of eight are supported by the support frame 4 via the intrusion amount adjusting mechanism 9. The mounting position of the inter-plant weeding mechanism 5 is set on the front side of the mounting position of the streak weeding mechanism 5. The intrusion amount adjusting mechanism 9 has selected a U-shaped swivel arm 91 that supports adjacent rotating shafts 51 of the inter-weed weeding mechanism 5 at the lower end (two in total) and a central portion of the swivel arm 91. It consists of a mounting bolt 92 that is fixed at a mounting angle.

  The inter-row weeding mechanism 6 is for weeding the inter-row X of the planted seedling P, and is composed of a non-driven squirrel-cage rotor in which a rotation shaft is disposed in a substantially horizontal direction and rotates by ground resistance between the strips.

  One of the inter-row weeding mechanisms 6 is arranged for one of the planted seedlings P (inter-row X), and a total of three are supported by the support frame 4 via the mounting stay 10. The mounting position of the inter-row weeding mechanism 6 is set behind the mounting position of the inter-strain weeding mechanism 5.

  The float 7 is in contact with mud and prevents the interstitial weeding mechanism 5 and the streak weeding mechanism 6 from settling, and is formed in a ski plate shape.

  Two floats 7 are supported by the support frame 4 via attachment stays 20. The mounting position of the float 6 is set to a position that is applied backward from substantially the same position as the mounting position of the streak weeding mechanism 6.

  The protective arm 8 is for avoiding the ground contact between the inter-strain weeding mechanism 5, the streak weeding mechanism 6, and the float 7 in places other than the rice fields, and is made of a curved round bar.

  Two of the protective arms 8 are supported by the support frame 4 integrally with the float 7 via an attachment stay 20. The lower end portion of the protective arm 8 is positioned below any of the inter-plant weeding mechanism 5, the streak weeding mechanism 6, and the float 7.

  According to this embodiment, substantially the same weeding operation as the paddy field weeding machine according to Patent Document 1 is performed. However, since the scraper 423 of the rotor blade 42 of the inter-plant weeding mechanism 4 weeds so as to scrape the weed of the inter-plant Y together with the mud, weeding is more reliably performed than the paddy field weeder according to Patent Document 1 described above.

  In the weeding work according to this embodiment, it is possible to change the mounting angle by loosening the mounting bolt 92 of the intrusion amount adjusting mechanism 9 to change the mounting angle. The amount of penetration of the rotor blade 52 of the inter-plant weeding mechanism 5 into the inter-plant Y (interval a of the rotor blade 52) can be adjusted (see FIGS. 4 and 5). As a result, in the weeding operation, the rotating rotor blade 52 of the inter-plant weeding mechanism 5 does not come into contact with the stem of the planted seedling P or the like to damage and damage the planted seedling P.

  In the adjustment of the penetration amount of the rotor blade 52 of the inter-plant weeding mechanism 5 into the inter-plant Y, the two rotor blades 52 adjacent so as to face one row of the planted seedlings P of the inter-weed weeding mechanism 5 Since the same amount is simultaneously adjusted by the swivel arm 91 of the adjusting mechanism 9, the intrusion amount can be adjusted easily and accurately.

  The operator who performs the weeding work grasps the handle 14 of the traveling machine body 1 and walks following. At this time, by grasping the operation handle 221 of the connecting arm 22 of the interval adjusting mechanism 2 and changing the engaging groove 222 of the connecting arm 22 with which the connecting pin 2 engages against the elastic force of the spring material 25, the traveling machine body is changed. The height of the handle 14 can be adjusted according to the height of the operator. Therefore, the hand and waist that grip the handle 14 of the traveling machine body 1 do not get tired. The adjusted engagement between the connecting pin 2 of the distance adjusting mechanism 2 and the engaging groove 222 of the connecting arm 22 is held by the elastic pressure of the spring material 25. Therefore, unexpected movement of the handle 14 of the traveling machine body 1 is prevented, and safety is ensured. Further, since the structure of the interval adjusting mechanism 2 is not complicated, easy and reliable operation is possible. In addition, when the height of the handle 14 of the traveling machine body 1 is adjusted and the weeding surfaces of the inter-plant weeding mechanism 5 and the streak weeding mechanism 6 are inclined, the rotation handle 34 of the angle adjusting mechanism 3 is rotated. The tilt can be corrected.

  Further, when turning the traveling direction at the edge of the rice field, the operation of avoiding the planting seedling P by lifting the inter-plant weeding mechanism 5, the streak weeding mechanism 6, the float 7, and the protective arm 8 with the traveling wheel 12 of the traveling machine body 1 as a fulcrum. (See FIGS. 5 and 6). At this time, since the inter-plant weeding mechanism 5, the streak weeding mechanism 6, the float 7 and the protective arm 8 are attached to the traveling machine body 1 (towing type), the handle 14 of the traveling machine body 1 is pushed up instead of being pushed down. become. Therefore, unlike the water source weeder according to Patent Document 1, it is not necessary to take a cramped posture in which the waist bends as it is pushed down. 5 and 6, the heights b and c before and after the lifting of the handle 14 of the traveling machine body 1 are adjusted to the height of the operator by adjusting the distance adjusting mechanism 2 described above. Can do. Therefore, it is not necessary to take a cramped posture that places a strain on the waist even if the inter-weed weed mechanism 5, the streak weed mechanism 6, the float 7 and the protective arm 8 are lifted. In addition, the correction of the inclination of the weeding surface of the inter-plant weeding mechanism 5 and the streak weeding mechanism 6 by the angle adjusting mechanism 3 described above maintains the height d of the inter-weed weeding mechanism 5 which is positioned at the lowest position by lifting. This makes it easier to avoid planting seedlings P.

  In the state where the handle 14 of the traveling machine body 1 is pushed up, the engagement between the connection pin 2 of the distance adjusting mechanism 2 and the engagement groove 222 of the connection arm 22 is held by the elastic pressure of the spring material 25 as described above. Therefore, unexpected movement of the handle 14 of the traveling machine body 1 is prevented, and safety is ensured.

  Further, by attaching the inter-plant weeding mechanism 5, the streak weeding mechanism 6, the float 7, and the protective arm 8 to the traveling machine body 1, the power point of the handle 14 and the inter-weeding mechanism with respect to the fulcrum of the traveling wheel 11 of the traveling machine body 1 are mounted. 5, since the point of action of the streak weeding mechanism 6 and the like are arranged in the same direction, an operation for avoiding the planting seedling P at the time of turning can be performed only by applying a small operating force.

It is a side view of the best form for implementing the weeder for paddy fields concerning the present invention. It is a top view of FIG. FIG. 2 is a rear view of FIG. 1. It is a front view of the principal part expansion of FIG. FIG. 5 is another operation diagram of FIG. 4. FIG. 2 is an operation diagram of FIG. 1. It is another operation | movement figure of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling machine body 14 Handle 2 Space | interval adjustment mechanism 21 Connection pin 22 Connection arm 222 Engagement groove 3 Angle adjustment mechanism 4 Support frame 5 Inter-plant weeding mechanism 6 Inter-row weeding mechanism 7 Float 8 Protection arm 9 Invasion amount adjustment mechanism P Planting seedling X Article space Y Stock

Claims (5)

  In a paddy field weeding machine equipped with a non-passenger traveling machine with an interstitial weeding mechanism for weeding between planted seedlings and an interstitial weeding mechanism for weeding between planted seedlings, A weeder for paddy fields characterized in that it is equipped with an interval adjusting mechanism for changing the vertical distance between the handle, the inter-plant weeding mechanism, and the interstitial weeding mechanism, which are attached to the rear part of the interstitial weeding mechanism and extend to the rear part of the traveling machine body.   2. The paddy field weeding machine according to claim 1, wherein the interval adjusting mechanism is rotatably supported by a connecting pin fixed to the handle and a supporting frame that supports the inter-weeding mechanism and the streak weeding mechanism, and is selectively engageable with the connecting pin. And a connecting arm provided with a plurality of engaging grooves.   3. The paddy weeder according to claim 2, wherein the distance adjusting mechanism includes a spring material that elastically presses the connecting arm toward the connecting pin.   4. The paddy field weeder according to claim 2, wherein an angle adjusting mechanism is provided between the traveling body and the support frame so as to vary an angle in the front-rear direction of the inter-plant weeding mechanism and the streak weeding mechanism. Paddy field weeding machine.   5. The paddy field weeding machine according to claim 2, wherein the support frame includes a float and an interstitial weeding mechanism, a streak weeding mechanism, a protective arm projecting downward from the float, in addition to the interstitial weeding mechanism and the streak weeding mechanism. Paddy field weeding machine characterized by that and are supported.

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