JP2003204708A - Weeder for paddy field - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To carry out excellent weeding of intrarow spacing by a weeder for a paddy field in which a weeding apparatus comprising an interrow space weeding mechanism acting between planted seedling rows and an intrarow spacing weeding mechanism acting between intrarow spacing parts in a planted seedling row is liftably connected to the rear part of a sulky traveling machine body. <P>SOLUTION: In this weeder for a paddy field in which a weeding apparatus 6 comprising an interrow space weeding mechanism acting between planted seedling rows and an intrarow spacing weeding mechanism acting between intrarow spacing in a planted seedling row is liftably connected to the rear part of a traveling machine body for riding, a long sideways movable frame 62 to be right and left reciprocated is vertically equipped with a plurality of weeding tines 61 corresponding to each planted seedling row to constitute the intrarow spacing weeding mechanism 6B and the weeding tine 61 is detachably arranged and removed together with movable frame 62. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paddy weeding machine for weeding a paddy field that has been planted.

[0002]

2. Description of the Related Art As a paddy weeder, for example, as disclosed in Japanese Patent Laid-Open No. 2000-300005, an inter-row weeding mechanism that acts between planting shoots and an inter-plantage weeding action that acts between plants in planting shoots. There is known a paddy weeder in which a weeding device having a weeding mechanism is vertically connected to a rear portion of a riding traveling vehicle body. In this paddy weeder, the inter-row weeding mechanism is configured by laterally arranging a plurality of weeding rotors rotationally driven around the horizontal axis so as to act between the planting shoots, and the inter-plant weeding mechanism. Is composed of a plurality of weeding tines rotationally driven about the vertical axis arranged in parallel in the lateral direction so as to act between the plants of each planting shoot, and a plurality of weeding tines reciprocally rocked to the left and right. A herbicide tine is used which is arranged laterally in parallel so as to act between the plants of each planted shoot.

[0003]

The paddy weeding machine having the above-mentioned structure is capable of efficiently performing the weeding between rows and the weeding between plants at one stroke. In order to change the working depth of the paddy field, loosening the fastening bolts of each weeding tine and adjusting the height individually with respect to the drive support for mounting the tines, the adjustment operation was performed. It took a lot of time and effort.

The present invention has been made by paying attention to such an actual situation, and the function of the inter-plant weeding mechanism using lateral swing type weeding tines was simply and quickly adjusted to meet the conditions of the field. The main purpose of the present invention is to provide a paddy weeder capable of performing good weeding between lower parts.

[0005]

[Means for Solving the Problems] [Structure, Action and Effect of the Invention According to Claim 1]

(Structure) The invention according to claim 1 provides a weeding device comprising an inter-row weeding mechanism acting between planting shoots and an inter-plant weeding mechanism acting between plants in the planting shoots,
In a paddy weeder that is vertically connected to the rear part of a riding traveling vehicle, a horizontal movable frame that is reciprocally driven to the left and right is provided with a plurality of weeding tines corresponding to each planting shoot, and weeding between the plants It is characterized in that the mechanism is constituted and that the weeding tines are detachably attached together with the movable frame.

(Operation / Effect) According to the above configuration, in the weeding work such as when the rooting strength of the seedlings is still low after the days of rice planting, the movable frame is removed from the weeding device to remove the weeds by the inter-plant weeding mechanism. It is possible to obtain a state in which the function is lost, and only inter-row weeding can be performed without defeating or damaging the planted seedling with the weeding tines of the inter-plant weeding mechanism. In addition, during weeding work with the seedlings growing, the movable frame can be attached to the weeding device to restore the weeding function of the inter-plant weeding mechanism and perform inter-row weeding and inter-plant weeding. Corresponding weeding can be performed. Moreover, since the switching of the presence or absence of the weeding function in the inter-plant weeding mechanism is performed by detaching the movable frame to which a large number of weeding tines are attached, the switching can be performed easily and quickly, and the handleability is also excellent. There is.

In addition, a plurality of types of movable frames having different specifications of weeding tines are prepared, and if necessary depending on field conditions such as between planted seedlings and the condition of weeds and algae growth. It also becomes easy to use by replacing it with a suitable one.

As another means for switching the weeding function in the inter-plant weeding mechanism, it is conceivable that the entire inter-plant weeding mechanism is adjusted so as to swing up and down, but this structure requires a complicated structure and many members. However, according to the invention of claim 5, the invention can be carried out without such a problem and has a great practical advantage.

[Structure, Action and Effect of the Invention According to Claim 2]

(Structure) The invention according to claim 2 provides a weeding device comprising an inter-row weeding mechanism acting between planting shoots and an inter-plant weeding mechanism acting between plants in the planting shoots,
In a paddy weeder that is vertically connected to the rear part of a riding traveling vehicle, a horizontal movable frame that is reciprocally driven to the left and right is provided with a plurality of weeding tines corresponding to each planting shoot, and weeding between the plants It is characterized in that it constitutes a mechanism and that this movable frame is attached so as to be adjustable in the vertical direction.

(Action / Effect) According to the above constitution, when weeds are strongly rooted or overgrown, it is desirable to deepen the action depth of the interstrain weeding mechanism. When rooting is weak or it is not overgrown, it is desirable to make the depth of action of the inter-plant weeding mechanism shallow in order to minimize damage to seedlings. By adjusting the height of the movable frame, the height of many weeding tines can be adjusted all at once to change the working depth, and appropriate weeding among plants can be performed according to the growth condition of weeds.

Also in this case, it is possible to quickly adjust each movable frame without the trouble of adjusting a large number of weeding tines one by one, and the workability is excellent.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an overall side view of a paddy weeder according to the present invention. In this paddy weeder, a four-wheel drive type passenger traveling vehicle body 1 having steering front wheels 2 and rear wheels 3 is provided on a rear portion of a four-wheel drive type parallel traveling link structure 5 driven by a hydraulic cylinder 4. In this example, the weeding device 6 is configured to perform eight weeding operations.

Here, as the riding traveling machine body 1, a traveling traveling machine body of a rice transplanter is used, and normally, a rear row end of the elevating link mechanism 5 is connected to an 8-row planting specification seedling planting device. Then, as shown in FIG. 5, the left and right front wheels 2 and rear wheels 3 are set as treads that straddle four planting seedlings F, respectively.

As shown in FIGS. 2, 3 and 4, at the front part of the weeding device 6, there is provided a connecting frame 10 which is detachably connected to the rear end of the elevating link mechanism 5, and the connecting frame 10 is provided. A horizontally long main frame 11 made of a square pipe material is supported in the lower part of the shaft so as to be able to roll around the front-rear axis P, and the main frame 11 has an 8-row specification inter-row weeding mechanism 6
A and the inter-plant weeding mechanism 6B are mounted side by side in front and back.

As shown in FIG. 4, brackets 12 are attached to main frame 11 portions corresponding to the left and right sides of the connecting frame 10, and rubber stoppers 13 attached inwardly to the respective brackets 12 are connected to the connecting frame 10. The maximum rolling angle of the main frame 11 is limited to several degrees from the neutral position by abutting on the left and right outer side surfaces of the main frame 11. Further, a stopper rubber 15 is attached upward to a front end of an arm 14 extending forward from the bracket 12, and when the weeding device 6 is largely raised to a predetermined height via the elevating link mechanism 5, the left and right rubbers are moved. The stoppers 15 are brought into contact with the lower surfaces of the left and right lower links 5a of the elevating link mechanism 5 to prevent the weeding device 6 from rolling.

A ground sensor 16 for elevation control is provided at the center of the main frame 11 in the left-right direction, and when the ground sensor 16 swings up and down around the rear fulcrum x in response to fluctuations in ground pressure, the ground sensor 16 moves. The potentiometer 1 detects the value detected by the potentiometer 17 and maintains the detected value within a preset reference value (including a dead zone).
By controlling the operation of the hydraulic cylinder 4 based on the detected value from 7, the up-and-down control for maintaining the weeding device 6 at a predetermined height with respect to the rice field is performed. By operating the adjusting lever 18 to change the height of the grounding sensor 16, it is possible to change the height of the entire weeding device 6 and adjust the working depth on the rice field.

A bevel gear case 21 is provided above the center of the main frame 11, and the bevel gear case 2 is provided.
1, the input shaft 22 protruding forward and the work transmission shaft 23 extending rearward from the rear part of the traveling machine body 1 are interlockingly connected, and the power transmitted to the input shaft 21 is used for weeding. The mechanism 6A and the inter-plant weeding mechanism 6B are driven as described later.

The work transmission shaft 23 is used to transmit power to a seedling planting device when the weeding device 6 is connected to the seedling planting device 6. The traveling machine body 1 is provided with an inter-stock transmission means for taking out the branched power and adjusting the inter-stock distance. Therefore, even when the weeding device 6 is connected,
By changing the speed of the work transmission shaft 23 by using this inter-train change means, the weeding device 6 can be driven at an arbitrary speed.

The structures of the inter-row weeding mechanism 6A and the inter-plant weeding mechanism 6B will be described in detail below.

[Strip weeding mechanism 6A]

As shown in FIG. 5, the inter-row weeding mechanism 6A includes nine weeding rotors 31 arranged in parallel at the same pitch as the inter-row pitch so as to be located between the rows of the planted seedlings F and the chain case 32. The support frame 33 and the support frame 33 are horizontally supported around the lower end of the free end, and the entire weeding rotor 31 is integrally rotated in the downcut direction.

It should be noted that the outermost weeding rotor 31 (L) which acts between the outer rows of the eight planted seedlings, that is, between adjacent rows.
4), 31 (R4), because the weeder travels back and forth in the same process as the planting process by the rice transplanter with 8-row planting specification, it will pass back and forth between adjacent lines. The weeding rotors 31 (C), 31 (L1) to 31 (L3), 31 (R1) to 31 other than the both ends, so that weeding between them can be performed properly.
The width is smaller than the action width of (R3).

Of the group of weeding rotors 31, only the weeding rotors 31 (L2) and 31 (R2) acting between the strips where the chain case 32 and the support frame 33 are located are left and right of the chain case 32 and the support frame 33. It is divided into two parts. Due to this division, only a void portion is formed in a region where weeding cannot be performed, but the chain case 32 and the support frame 33 are positioned between the threads through which the rear wheel 3 passes, and the rear wheel 3
Since the weeds and algae that have grown between the rows are trampled and embedded in the mud, weeding between the rows where the divided weeding rotor 31 is located can be performed without any untreated area.

The chain case 32 and the support frame 33
The base portion of is connected and supported to both left and right ends of an auxiliary frame 34 made of a round pipe material which is horizontally connected to the upper rear portion of the main frame 15, and the upper portion of the chain case 32 and the bevel gear case 21 are made of a round pipe transmission. The output shaft 36 and the input shaft 37 of the chain case 32, which are connected by the case 35 and project from the lateral side surface of the bevel gear case 21,
The transmission case 35 is interlockingly connected by a lateral transmission shaft 38 that is inserted and arranged in the transmission case 35.

A driven side member 39a of a jump clutch type torque limiter 39 is loosely fitted to the input shaft 37, and a one-way clutch 40 is attached to the driven side member 39a.
The upper sprocket 41 is externally fitted and mounted via
At the bottom of the chain case 32, the lower sprocket 42
An output shaft 43 in which the above are integrated is provided, and a chain 44 is wound and stretched over the upper and lower sprockets 41 and 42. Therefore, the rotational torque supplied to the entire weeding rotor 31 is such that the maximum torque that can be transmitted is limited by the torque limiter 39, and the one-way clutch 40 causes the weeding rotor 31 group to rotate ahead of the input shaft 37. Is allowed.

As shown in FIGS. 6 and 7, the weeding rotor 3
1 is a cage-shaped rotor body 51 connected and fixed to a rotary support shaft 52 made of a hexagonal pipe material, and pressed into a rake shape on each of the stays 53 extending laterally at six outer peripheral portions of the rotor body 51. Molded sheet metal weeding claw 54
And a rotary support shaft 52.
Is equipped with a plurality of weeding rotors 31. That is,
The rotation support shaft 52 has a central rotation support shaft 52 (C) externally fitted and connected to the output shaft 43 of the chain case 32 and an idle support shaft 45 supported on the lower end of the support frame 33. Left rotation support shaft 52 externally fitted and connected to the outer protruding portion of the shaft 43.
(L) and the right rotation support shaft 52 (R) connected to the outer protruding portion of the idle rotation support shaft 45.
2 is equipped with a plurality of weeding rotors 31. Also,
A mudguard cover 5 that covers these weeding rotors 31 from above.
5 are deployed.

The weeding claw 54 made of a sheet metal press attached to the weeding rotor 31 is a one-claw weeding claw 54.
(1) and two types of weeding claws 54 (2) with two-claw specifications are prepared. By combining these two types of weeding claws 54 (1) and 54 (2), a weeding rotor 31 having a predetermined working width is obtained. Has been formed. Here, in each of the weeding rotors 31, the weeding claws 54 adjacent to each other in the circumferential direction are displaced in the lateral width direction by a half of the claw parallel pitch in the lateral width direction so that the weeding claws 54 adjacent to each other in the circumferential direction do not act at the same position in the lateral direction. Installed.

In addition, the weeding rotors 31 adjacent to each other on the left and right are sequentially shifted in the mounting phase in the circumferential direction by 15 degrees, and the weeding rotors 31 on the left and right sides with respect to the central weeding rotor 31 (c). The rotation phase of is set symmetrically. That is, in FIGS. 6 and 7, the weeding rotors 31 (L1) and 31 (R1) have the same phase, and the weeding rotor 31 (L1)
2), 31 (R2) are in phase, weeding rotors 31 (L3), 31 (R3)
Are set to the same phase, and the weeding rotors 31 (L4) and 31 (R4) are set to the same phase. In side view, as shown in FIG. It is designed to act differently on the rice field.

Therefore, by integrally rotating the weeding rotor groups 31 arranged so that the phases in the rotational direction are shifted as described above, the driving timing of the weeding claws 54 on the rice field is dispersed, and the driving load is concentrated. Being prevented,
By performing the nail driving symmetrically, the driving reaction force acts evenly on the left and right, so that the weeding device 6 is not unduly rolled.

Further, on the main frame 11, the planting seedlings F are provided with the weeding rotors 3 as the weeding rotors 31 move between the rows.
In order to avoid being caught in 1, the weeding rotor 56 (L2) that acts on the trail of rear wheel passage is attached while the weeding plate 56, which has a U-shaped rear view, is attached.
On the lower end of the front part of only the grass plate 56 with respect to 31 (R2), there is provided a grass body 57 projecting forward and having a tapered shape. When the planting seedlings F on both sides of the trail of passage of the rear wheels are inwardly inclined with respect to each other by the mud flowing into the trace of passage of the rear wheel 3, the planting bodies 57 have the seedlings F that are inclined inward. It functions to push it to the left and right and smoothly guide it to the sward board 57.

[Inter-plant weeding mechanism 6B]

As shown in FIGS. 12 and 13, the inter-plant weeding mechanism 6B is a weeding tine 6 in which a wire rod is vertically hung.
1 is attached to a movable frame 62 that reciprocates left and right, and eight groups of weeding tines 61 are arranged side by side so that four groups of weeding tines act on each planting row.

A pair of left and right movable frames 62 are provided, and each movable frame 62 is pivotally connected to a bracket 63 erected on the main frame 11 so as to be swingable left and right around fulcrums a and b. The suspension links 64 and 65 are pivotally connected to the lower ends of the pair of suspension links 64 and 65 in a parallel four-link form, and one of the suspension links 64 and 65 is disposed near the center of the main frame 11 and above. It is interlockingly connected to the eccentric rotation pin 67 of the inter-plant weeding drive case 66 via push-pull rods 68 and 69, and the suspension links 64 and 65 are driven to swing with the rotation of the eccentric rotation pin 67. As a result, both movable frames 62 are configured to move left and right substantially in parallel and in mutually opposite directions. The eccentric rotation pin 67 is provided on the input shaft 22 of the bevel gear case 21.
It is adapted to be driven by a driven side pulley 72 which is wound around a driving side pulley 70 provided in the above through a belt 71 and is linked with an increased speed.

The movable frame 62 is composed of a sheet metal frame material having a downward U-shaped cross section, and each weeding tine 61 is inserted into a notch k formed in front and rear lower end folded sides 62a and 62b. In addition, the upper end bent portion of the weeding tine 61 is configured to be fastened and fixed with one bolt 73. Further, hollow brackets 74 project from the front surface of the movable frame 62 corresponding to each planting strip, and the weeding tines 61 are fixed to the front ends of the brackets 74 one by one with the same structure as above. Has been done. That is, of the four weeding tines 61 arranged in parallel for each planting row, the two weeding tines 61 are attached to the center of the front side of the movable frame 62 in a row in the front-rear direction. Two weeding tines 61 are mounted side by side on the rear surface side of the frame 52, and are arranged in a substantially triangular shape in a plan view.

At the lower end of the weeding tine 61, a weeding action part 61a is bent and cantilevered in a rearward direction, and the weeding action part 61a has a corrugated side view. The weeding action portion 61a is moved left and right to efficiently scratch the rice field and exert a weeding function.

The weeding device 6 is configured as described above, and each weeding rotor 31 of the inter-row weeding mechanism 6A is moved forward while being rotationally driven in the downcut direction, so that the weeds grow between the weeds. The weeds and algae present are scraped off and floated on the paddy field, or embedded, and the weeding tines 61 of the inter-plant weeding mechanism 6B move forward and backward along the planting shoots while being reciprocally driven left and right. Only the weeds and algae growing between the plants are scraped off and floated on the rice field.

The weeding work will be carried out several times after planting the seedlings, but the rooting condition of the seedlings F, the condition of weeds and algae growth, etc. differ depending on the number of days elapsed after the planting. It is desirable to be able to adjust the strength of the weeding function so that only the weeds and algae can be scraped off without scratching the seedlings F, and the present invention responds to this demand as follows.

That is, at the lower ends of the suspension links 64 and 65, a support shaft 75 for pivotally connecting the movable frame 62 is projected forward, and the left and right support shafts 75 are connected by a support frame 76. And the movable frame 62 has left and right support shafts 7
5, a connecting hole 77 through which 5 is inserted is provided at the upper and lower sides, and by inserting the support shaft 75 into the upper connecting hole 77 and preventing it from coming off with a nut 78 as shown in the figure, the movable frame 62 is attached low. , The depth of action of the weeding tines 61 on the rice field becomes deep, and a strong inter-plant weeding function is exhibited. Further, when the connection is made using the lower connection hole 77, the movable frame 62
Therefore, the weeding tine 61 has a shallow action depth on the paddy field, and the weeding function between plants is low.

In the first weeding work after a few days after planting, when the rooting of the seedling F is still weak, the movable frame 62 is removed from the support shaft 74 to remove the inter-plant weeding function. Can be eliminated and only weeding between rows can be performed.

When the mud hardness of the paddy field is different between the left and right within the working width or the weed growth condition is greatly different between the left and right, the driving reaction force of the weeding rotor 31 group in the inter-row weeding mechanism 6A. May greatly differ from each other on the right and left sides, and the side having a large driving reaction force may be pushed up to cause the entire weeding device 6 to roll and tilt. Therefore, in the present invention, it is possible to avoid the occurrence of an inappropriate inclination of the weeding device 6 as follows.

That is, the chain case 32 and the support frame 33
A pair of left and right balance springs 82 are stretched over the left and right portions of the auxiliary frame 34 connecting the upper parts of the above and a balance adjusting lever 81 attached to the connecting frame 10 so as to be able to adjust the left and right swing. Accordingly, the elastic tension of the left and right balance springs 82 gives an appropriate elastic resistance to the rolling operation of the weeding device 6, and the weeding device 6
The posture is stabilized. The balance adjusting lever 81 can be selectively locked to the lever guide 83 provided on the connecting frame 10 at any of three positions of the neutral position and the left and right positions. By locking and holding at, the bias balance by the left and right balance springs 82 can be positively changed and adjusted. For example, when the mud hardness on the left side is harder than the right side in the lateral width of action of the weeding device 6, the balance adjustment lever 81 is locked at the left position to change the urging balance of the weeding device 6 in the downward left direction. However, it is possible to keep the weeding device 6 parallel to the paddy field and to make the weeding action depth uniform on the left and right against the strong push-up on the left side caused by the nail driving reaction force.

The present invention can also be implemented in the following modes. The movable frame 62 may be configured so as to be vertically adjusted in three stages or a plurality of stages of more than three stages. The movable frame 62 may be configured so as to be adjusted up and down steplessly by using a screw or the like. The movable frame 62 in the inter-plant weeding mechanism 6B may be formed in series over the entire width.

[Brief description of drawings]

FIG. 1 is an overall side view of a paddy weeder according to the present invention.

FIG. 2 is a front view of the entire weeding device.

FIG. 3 is a side view of the entire weeding device.

FIG. 4 is a front view near the center of the weeding device.

FIG. 5 is a schematic plan view showing a weeding work form by a weeding device.

FIG. 6 is a rear view showing the left half of the inter-row weeding mechanism and a side view of each weeding rotor.

FIG. 7 is a rear view showing the right half of the inter-row weeding mechanism and a side view of each weeding rotor.

FIG. 8 is a side view showing the weeding nail arrangement of the entire weeding rotor.

FIG. 9 is a front view of the weeding nail.

FIG. 10 is a side view of the weeding nail.

FIG. 11 is a rear view in which the weeding rotor drive unit is longitudinally cut.

FIG. 12 is a front view showing the left half of the inter-plant weeding mechanism.

FIG. 13: (a) Side view of inter-plant weeding mechanism (B) Perspective view of the weeding tine mounting part

[Explanation of symbols]

1 passenger traveling aircraft 6 weeding equipment 6A Inter weeding mechanism 6B Inter-plant weeding mechanism 61 weeding tines 62 movable frame

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoshihiko Miyahara             1-40, Nisshin-cho, Saitama City, Saitama Prefecture             Biotechnology Research Institute (72) Inventor Takahiro Kanuma             1-40, Nisshin-cho, Saitama City, Saitama Prefecture             Biotechnology Research Institute (72) Inventor Masakazu Tanaka             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory (72) Inventor Masaki Orimoto             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory (72) Inventor Noboru Higashio             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory (72) Inventor Akio Kashii             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory (72) Inventor Kimihiko Otoshi             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory (72) Inventor Hironori Uetani             700 Makimachi, Matsuyama City, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd.             Inside the company (72) Inventor Minoru Matsuoka             700 Makimachi, Matsuyama City, Ehime Prefecture Iseki Agricultural Machinery Co., Ltd.             Inside the company (72) Inventor Plow Tadayoshi             38, Sairinji, Yahagi-cho, Okazaki City, Aichi Prefecture             Agricultural machinery Co., Ltd. (72) Inventor Isamu Niwa             38, Sairinji, Yahagi-cho, Okazaki City, Aichi Prefecture             Agricultural machinery Co., Ltd. F term (reference) 2B034 AA07 BA02 BA06 BA07 BB01                       BB08 BC06 BD05 BE02 HA16                       HB02 HB16 HB22 HB23

Claims (2)

[Claims] 1. A paddy field weeder in which a weeding device comprising an inter-row weeding mechanism acting between planting shoots and an inter-plant weeding mechanism acting between plants in the planting shoots is movably connected to the rear part of a riding traveling vehicle. In the machine, a horizontal movable frame that is reciprocally driven to the left and right is provided with a plurality of weeding tines corresponding to each planting shoot, to form the inter-plant weeding mechanism, and the weeding tines are detached together with the movable frame. A paddy weeder characterized by being configured as possible. 2. A paddy field weeder in which a weeding device comprising an inter-row weeding mechanism acting between planting shoots and an inter-plant weeding mechanism acting between plants in the planting shoot is movably connected to the rear part of the riding traveling vehicle. In the machine, a horizontal oblong movable frame that is driven to reciprocate left and right is provided with a plurality of weeding tines that correspond to each planted shoot, to form the inter-plant weeding mechanism, and this movable frame can be adjusted up and down. A paddy weeder characterized by being installed.