JP4727733B2 - Paddy weeder - Google Patents

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, paddy field weeding uses a rice transplanter with a seedling planting mechanism pulled by a traveling body, and replaces the seedling planting mechanism and weeding mechanism with the traveling body to pull the weeding work time. Is shortened.

  Conventionally, as a paddy field weeder, for example, those described below are known.

JP 2000-41410 A

  In Patent Document 1, a running weaving mechanism pulls a streak weeding mechanism that weeds between stumps of planted seedlings and a weeding mechanism between plants that weeds between planted seedlings. A paddy weeder that is driven to rotate by power transmitted from the machine is described.

  The paddy field weeding machine according to Patent Document 1 uses a rice transplanter by pulling the seedling planting mechanism, the streak weeding mechanism, and the inter-plant weeding mechanism to the traveling machine body, and does not damage the planted seedling. Therefore, it is described that the working depth (cultivation depth) of the inter-row weeding mechanism and the inter-strain weeding mechanism is adjusted.

  In the paddy weeding machine according to Patent Document 1, the rice plants planted by the rice transplanter are arranged with a predetermined left-right interval (between stripes) and a predetermined front-rear interval (between strains), but between each planting unit May be indeterminate by the visual sense of the rice planting operator, and the streak may be too narrow to allow the streak weeding mechanism to work. In addition, since the weeding mechanism is forcibly driven, the inter-weeding mechanism is arranged away from the planted seedling in order to avoid damage to the planted seedling, so that weeds are easily left behind. In addition, since the working depth of the weeding mechanism between the streak and the inter-strain weeding mechanism must be adjusted individually, it takes time to adjust the working depth of the weeding. Therefore, there is a problem that supplementary weeding work by human power or the like is required or preparation work for weeding takes time, and shortening of the weeding work time cannot be sufficiently achieved. is there.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a paddy field weeder that can sufficiently shorten the weeding time.

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

  In paddy field weeding machines, the weeding mechanism for weeding the interplant weeding mechanism that weeds the planted seedlings and the interstitial weeding mechanism for weeding the planted seedlings, The present invention is characterized in that a working depth uniform adjustment mechanism for evenly adjusting the working depth is provided.

  With this means, the weeding working depths of the inter-row weeding mechanism and the inter-strain weeding mechanism are simultaneously adjusted by the working depth uniform adjusting mechanism.

  In addition, the paddy weeder is characterized in that it has a working depth relative adjustment mechanism that adjusts only the weeding working depth of the streak weeding mechanism.

  In this means, only the working depth of the interstitial weeding mechanism that is easily caught by mud is adjusted by the working depth relative adjustment mechanism.

  Further, the present invention is characterized in that a traction posture adjusting mechanism for adjusting a traction posture with respect to the traveling machine body of the streak weeding mechanism and the inter- stock weeding mechanism is provided.

  In this means, the traction posture of the streak weeding mechanism and the inter- stock weeding mechanism with respect to the traveling machine body is adjusted by the traction posture adjusting mechanism.

Through the run line airframe coupling mechanism behind the (1) (2), Article between herbicidal mechanism for herbicidal between Article seedlings planting (5) strains herbicidal mechanism for weeding between strains and of the planting seedlings (6) In the paddy weeder supported up and down freely,
A main frame (3) supported by the connection mechanism (2) in an up-and-down manner;
A support base (4) is supported at the rear of the main frame via a working depth uniform adjustment mechanism (10) so as to be movable up and down.
Supporting the inter-plant weeding mechanism (6) to the support base, and connecting the inter-row weeding mechanism (5) via the working depth relative adjustment mechanism (11) behind the inter-weed weeding mechanism,
By adjusting the working depth uniform adjustment mechanism (10), the inter-plant weeding mechanism (6) and the inter-row weeding mechanism (5) are adjusted parallel to the main frame (3) in the vertical direction,
The inter-row weeding mechanism (5) is adjusted in the vertical direction with respect to the inter-strain weeding mechanism (6) by the working depth relative adjustment mechanism (11).

Specifically, the working depth uniform adjustment mechanism (10) includes a multi-point link arm (10a) spanned between the main frame (3) and the support base (4), and the multi-point A rotating operation handle (10b) that is arranged toward the traveling machine body (1) with respect to the link arm, and that expands and contracts the multipoint link arm;
The working depth relative adjustment mechanism (11) is connected to the multipoint link arm (11a) spanned between the main frame (3) and the support base (4), and the multipoint link arm. And a connecting arm (11b) that is connected to an arm (5b) that supports a rotor (5a) that constitutes the inter-row weeding mechanism, and is disposed on the traveling machine body (1) side with respect to the multi-point link arm (11a). And a tilting type operating lever (11c) for expanding and contracting the multipoint link arm (11a).

The inter-strain weeding mechanism (6) includes a non-drive type blade bundle (6a) that rotates by a grounding resistance between the strains, and the blade bundle has an inclination that separates the planted seedling from above to below. The rotating shaft (6a ″) is provided with a plate (6a ′) radially,
The inter-row weeding mechanism (5) includes a non-driven rotor (5a) that rotates by ground resistance between the inter-rows.

  In this means, since the impeller is non-driven, the planted seedling is not damaged even if the impeller is brought close to the planted seedling.

  In the paddy field weeding machine according to the first and second aspects of the present invention, the weeding working depth of the inter-row weeding mechanism and the inter-strain weeding mechanism is simultaneously adjusted by the working depth equalizing mechanism, so that the weeding working depth can be adjusted. Since it does not take time and preparation time for weeding does not take time, there is an effect that the working time for weeding can be sufficiently shortened. Furthermore, since the working depth of only the interstitial weeding mechanism that is easily caught by mud is adjusted by the working depth relative adjustment mechanism, the working depth of weeding can be finely adjusted according to the situation of the paddy field. effective. In addition, by making it possible to adjust the towing posture of the striation weeding mechanism and the inter-plant weeding mechanism with the towing posture adjustment mechanism, it is possible to eliminate the unnecessary inclination of the streak weeding mechanism and the inter-strain weeding mechanism. And effective in weeding.

  The paddy weeder according to the present invention of claim 3 is such that the impeller is non-driven and the planted seedling is not damaged even when the impeller is brought close to the planted seedling, and weeds are not left behind. Since supplementary weeding work by human power becomes almost unnecessary, there is an effect that the working time of weeding can be sufficiently shortened. Moreover, since the front-end | tip part of an impeller is adjoined to the root part of a planting seedling, there exists an effect which does not damage the stem etc. of a planting seedling in the other part of an impeller. In addition, if a scraper is provided at the tip of the impeller close to the root part of the planted seedling, the scrape scrapes mud together with the weeds and embeds it in the soil, blocking the photosynthesis and respiration of the weeds. Weeding effect is obtained by grassing.

It is a front view which shows the 1st example of the best form for implementing the weeder for paddy fields concerning this invention. It is an operation | movement diagram of the principal part of FIG. It is an enlarged plan view of the principal part of FIG. It is an enlarged side view of the principal part of FIG. FIG. 4 is a partially enlarged view of FIG. 3. FIG. 6 is a partially enlarged view including the cut in FIG. 5. FIG. 5 is a partially enlarged view of FIG. 4. FIG. 2 is a partially enlarged view of FIG. 1. FIG. 9 is an operation diagram of FIG. 8. FIG. 9 is another operation diagram of FIG. 8. FIG. 9 is a partially enlarged view of FIG. 8. FIG. 12 is an operation diagram of FIG. 11. FIG. 9 is still another operation diagram of FIG. 8. It is a perspective view which shows the some operation | movement pattern of FIG. It is a top view which shows the weeding work example by FIG. It is a top view which shows the other weeding work example by FIG. It is a front view of the principal part which shows the 2nd example of the best form for implementing the weeder for paddy fields concerning this invention. FIG. 18 is a simplified diagram illustrating the adjustment principle of FIG. 17.

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

  FIGS. 1-16 shows the 1st example of the best form for implementing the weeder for paddy fields based on this invention.

  In the first example, one using a six-row rice transplanter is shown.

  As shown in FIG. 1, the first example is configured such that the interstitial weeding mechanism 5 and the inter- stock weeding mechanism 6 are pulled by the traveling machine body 1 through the connecting mechanism 2, the main frame 3, and the support base 4.

  The traveling machine body 1 is of a riding type in which an engine 1b is mounted on the front portion of the vehicle body 1a and a seat 1c is installed on the rear portion, and the vehicle travels on the front wheels 1d and the rear wheels 1e. About this traveling machine body 1, planting of the connection mechanism 2, the main frame 3, the support base 4, the interrow weeding mechanism 5, the inter-plant weeding mechanism 6 or at least the support base 4, the inter-row weeding mechanism 5, the inter-plant weeding mechanism 6 It is used for rice transplanters by substituting for the mechanism.

  As shown in FIG. 2, the connecting mechanism 2 connects the main frame 3, the support base 4, the inter-row weeding mechanism 5, the inter- stock weeding mechanism 6, and the like to the traveling machine body 1 so as to be movable up and down. The four-point link arm 2a spanned between the main frame 3 and a hydraulic device (not shown) that drives the four-point link arm 2a to expand and contract.

  The main frame 3 has a box shape that supports the support base 4, the inter-row weeding mechanism 5, the inter-strain weeding mechanism 6 and the like, and continuously extends in the width direction of the traveling machine body 1 (see FIGS. 3 and 4). ).

  A float mechanism 7 and a leveling mechanism 8 are attached to the lower part of the main frame 3. The float mechanism 7 includes a float plate 7a that slides on the surface of the mud B accumulated on the surface A, an attachment member 7b that attaches the float plate 7a to the main frame 3 so that the vertical position can be adjusted, and the float plate 7a It consists of a transmission member 7 c that transmits the movement (vertical movement) to the hydraulic equipment of the coupling mechanism 2. The leveling mechanism 8 includes an arm for leveling the wheel marks on the mud B of the front wheel 1d and the rear wheel 1e of the traveling machine body 1.

  A left / right balance mechanism 9 is attached to the upper part of the main frame 3. The left / right balance mechanism 9 automatically adjusts the left / right (width direction) balance of the main frame 3 with respect to the coupling mechanism 2. That is, even if the rice transplanter body is tilted, the weeder itself is a mechanism for keeping it parallel to the rice field.

  The support base 4 is composed of a box shape that supports the inter-row weeding mechanism 5 and the inter-plant weeding mechanism 6, and six support bases 4 are arranged in parallel in the width direction of the traveling machine body 1 corresponding to the six-row planting (see FIG. 3). .

  Between the main frame 3 and the support base 4, a working depth uniform adjustment mechanism 10 is attached. The working depth uniform adjustment mechanism 10 adjusts the weeding working depth of the inter-row weeding mechanism 5 and the inter-strain weeding mechanism 6 by moving the inter-row weeding mechanism 5 and the inter-strain weeding mechanism 6 up and down in parallel. A multi-point link arm 10a spanned between the main frame 3 and the support base 4 and a rotary operation handle 10b supported by the main frame 3 to expand and contract the multi-point link arm 10a (FIGS. 8 and 8). 9).

  The inter-row weeding mechanism 5 is for weeding the inter-rows of the planted seedling C, and a rotor in which a total of 7 pieces, 5 pieces between the support bases 4 and 1 piece outside the both ends of the support base 4 are arranged in parallel. 5a (see FIG. 3). As shown in detail in FIG. 6, the rotor 5 a is formed in a cage shape in which bars 5 a ′ parallel to the axis are radially arranged and bearings 5 a ″ are provided at both ends. 5a ″ is supported by the support base 4 by the arm 5b supported, and is a non-driven type that rotates by ground resistance between the strips. The arm 5b is attached to the support base 4 so as to be able to rise and fall, and is biased downward (downward direction) by a coil spring 5c. The axial width of the two rotors 5a at the left and right ends is shorter than the axial width of the central five rotors 5a (see FIGS. 3 and 4).

  Between the main frame 3 and the streak weeding mechanism 5, a working depth relative adjusting mechanism 11 and a retracting mechanism 12 are attached. The working depth relative adjustment mechanism 11 adjusts only the weeding working depth of the streak weeding mechanism 5, and includes a multipoint link arm 11a spanned between the main frame 3 and the support base 4, and a plurality of points. A connecting arm 11b that connects the link arm 11a and the arm 5b of the interstitial weeding mechanism 5, a tilt-type operating lever 11c that is supported by the main frame 3 and that expands and contracts the multipoint link arm 11a, and an operating range of the operating lever 11c A stopper 11d for restricting the operation, a meshing structure 11e for fixing the operating position of the operating lever 11c, a coil spring 11f for elastically biasing the meshing of the meshing structure 11e, and releasing the elastic pressure of the coil spring 11f adjacent to the operating lever 11c. It consists of the 2nd operation lever 11g to operate (refer FIGS. 11-13). The retreat mechanism 12 retreats the two rotors 5a at the left and right ends of the inter-row weeding mechanism 5 upward, and the arm 5b that supports the main rotor 3 and the two rotors 5a at both the left and right ends of the inter-row weeding mechanism 5. And a tilt-type operation lever 12b connected to the multi-point link arm 12a for expanding and contracting the multi-point link arm 12a (see FIG. 10). In addition, since the streak weeding mechanism 5 is non-driven and does not need to consider the drive transmission structure, the retracting mechanism 12 can be configured easily.

  The inter-strain weeding mechanism 6 is for weeding between the plants of the planted seedling C, and is provided with a pair of six impellers 6a that rotate by the ground resistance between the strains. As shown in FIGS. 3, 4, and 7, the impeller 6 a is configured such that a plate 6 a ′ is radially provided on a rotating shaft 6 a ″ having an inclination that is spaced downward from above the planted seedling C. The impeller 6a is attached to the support base 4 by an arm 6b, and the tip of the plate 6a 'of the impeller 6a. Is provided with a scraping piece 6c bent toward the rear side in the rotational direction accompanying the forward movement of the traveling machine body 1.

  According to the first example, as shown in FIG. 2, the traveling machine body 1 is caused to travel by raising the main frame 3, the support base 4, the inter-row weeding mechanism 5, the inter- stock weeding mechanism 6, etc. to go into. The main frame 3, the supporting base 4, the inter-row weeding mechanism 5, the inter- stock weeding mechanism 6 and the like are lowered by the connecting mechanism 2 as shown in FIG. 5. Adjust the working depth of the inter-strain weeding mechanism 6 simultaneously (see FIGS. 8 and 9). Accordingly, it takes less time to adjust the working depth of weeding and it takes less time to prepare for weeding, so that the working time of weeding can be shortened.

  Thereafter, weeding is performed by traveling the traveling machine body 1. At this time, the inter-plant weeding mechanism 6 is non-driven and there is no possibility of damaging the planted seedling C, and the impeller 6a can be disposed in close proximity to the planted seedling C, so that weeds are not left behind. Further, the scrap 6c of the inter-plant weeding mechanism 6 is brought close to the vicinity of the root of the planted seedling C to remove the mud B (see FIG. 7), and the rotor 5a of the inter-row weeding mechanism 5 The weeds pulled out by the bar 5a 'are buried in the mud B. Accordingly, weeds are not left behind, and supplementary weeding work by human power or the like is almost unnecessary, so that the time for weeding can be shortened. In addition, when the traveling machine body 1 stops, the rotor 5a of the streak weeding mechanism 5 and the impeller 6a of the interstitial weeding mechanism 6 automatically stop, so that the planted seedling C is not damaged unnecessarily. . Further, even if the scrap 6c of the inter-strain weeding mechanism 6 scrapes off the mud B, the new mud B immediately flows from the surroundings, so that the roots of the planted seedling C are not exposed.

  In the weeding operation in which the traveling machine body 1 travels, the main body regardless of the vertical movement of the traveling machine body 1 due to the change in the depth of the mud B or the like by the linkage between the hydraulic device of the coupling mechanism 2 and the transmission member 7c of the float mechanism 7. The height on the mud B of the frame 3, the support base 4, the streak weeding mechanism 5, the inter-strain weeding mechanism 6 and the like is kept constant. Further, when the mud B is caught on the rotor 5a of the streak weeding mechanism 5 due to the depth of the mud B and the rotation is impossible, the rotor 5a of the streak weeding mechanism 5 is moved by the working depth relative adjustment mechanism 11. It is only necessary to pull it up slightly (see FIG. 13).

  Further, in the weeding work in which the traveling machine body 1 is run, weeding in the streak a between each unit of seedling planting by the rice transplanter is performed by the narrow rotor 5a of the streak weeding mechanism 5, The remnant surface D of the weeds in the forward path can be eliminated by reciprocating the striation a (see FIGS. 3 and 15). In addition, when this space | interval a is a little narrower than the space | interval b in 1 unit of planting of the seedling by a rice transplanter, weeding is possible as it is with the narrow rotor 5a of the space weeding mechanism 5. In addition, when the streak a is a very narrow streak b in one unit of seedling planting by a rice transplanter, the rotor having a narrow width at both ends of the streak weeding mechanism 5 located in the streak a by the retraction mechanism 12 Work can be performed by running the traveling machine body 1 in a state where 5a is avoided upward (see FIGS. 10 and 15), and the weeding time can be shortened.

  17 and 18 show a second example of the best mode for carrying out the paddy field weeding machine according to the present invention.

  In the second example, a part of the multipoint link arm 10a of the working depth equalization adjusting mechanism 10 of the first example described above is replaced with a pulling posture adjusting mechanism 13 including a screw rod 13a and a sleeve nut 13b.

  According to the second example, by adjusting the length of the traction posture adjusting mechanism 13, even if the vehicle body 1 a of the traveling machine body 1 is inclined, the inclination angle θ is absorbed and the interstitial weeding mechanism 5 and the inter-plant weeding mechanism 6 are absorbed. Can be corrected to a parallel state.

  As described above, in addition to the illustrated examples, it is possible to select a non-riding vehicle as the traveling machine body 1.

DESCRIPTION OF SYMBOLS 1 Traveling machine body 2 Connection mechanism 3 Main frame 4 Support base 5 Inter-row weeding mechanism 5a Rotor 5b Arm 6 Inter-plant weeding mechanism 6a 'Plate 6a''Rotating shaft 10 Working depth uniform adjustment mechanism 10a Multi-point link arm 10b Operation handle 11 Work Depth relative adjustment mechanism 11a Multiple point link arm 11b Connection arm 11c Operation lever 13 Traction posture adjustment mechanism B Mud C Planting seedling

Claims (3)

Via a coupling mechanism behind the run line body, the strip between the herbicidal mechanisms and for paddy field herbicides machine between strains herbicidal mechanisms and vertically movably supported to herbicidal between strains of planting seedlings of herbicidal between Article seedlings planting,
A main frame supported to be lifted and lowered by the coupling mechanism;
A support base is supported behind the main frame so as to be movable in the vertical direction via a working depth equalization adjustment mechanism.
Supporting the inter-strain weeding mechanism to the support base, and connecting the inter-strain weeding mechanism behind the inter-strain weeding mechanism via a working depth relative adjustment mechanism,
By adjusting the working depth uniform adjustment mechanism, the inter-strain weeding mechanism and the streak weeding mechanism are adjusted in parallel in the vertical direction with respect to the main frame,
By adjusting the working depth relative adjustment mechanism, the inter-row weeding mechanism is adjusted in the vertical direction with respect to the inter-plant weeding mechanism,
A weeding machine for paddy fields. The working depth uniform adjustment mechanism is disposed toward the traveling machine body side with respect to the multipoint link arm spanned between the main frame and the support base, A rotary operation handle for expanding and contracting the point link arm,
The working depth relative adjustment mechanism supports a multi-point link arm spanned between the main frame and the support base, and a rotor connected to the multi-point link arm and constituting the inter-row weeding mechanism. A connecting arm that is connected to the arm, and a tilting type operating lever that is disposed on the traveling machine body side with respect to the multi-point link arm and that expands and contracts the multi-point link arm.
The weeder for paddy fields according to claim 1. The inter-plant weeding mechanism is provided with a non-drive type blade bundle that rotates by a grounding resistance between the lines, and the blade bundle radially radiates a plate on a rotating shaft that is inclined downward from above the planted seedling. Established
The inter-row weeding mechanism is composed of a non-driven rotor that rotates by ground resistance between the inter-rows,
The weeding machine for paddy fields according to claim 1 or 2.

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