JP2000300006A - Rice paddy weeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice paddy weeder corresponding to a sulky work and carrying out an intertillage weeding operation in a state as good as possible. SOLUTION: This rice paddy weeder is constituted by connecting a weeding apparatus 6 to be liftable in the rear of a sulky machine body 1 and the weeding apparatus 6 is constituted by equipping an interrow weeding mechanism J1 which arranges plural interrow weeding rotors 21 rotatively driven around a lateral shaft center in parallel along the direction of body side to act between plural rows. Each interrow weeding rotor 21 is constituted by installing plural weeding nail 26 arranged along the direction of the machine body side with suitable intervals and the weeding nails 26 are installed to be elastic and free to displace backward to the direction of rotation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paddy field weeding machine for performing mid-tilling weeding in a paddy field in which seedlings have been planted.

[0002]

2. Description of the Related Art Conventionally, in a paddy field weeding machine, as disclosed in Japanese Utility Model Application Laid-Open No. 3-48401, for example, an electric motor or a hydraulic motor is driven to rotate around a horizontal axis so that a gap between strips can be obtained. There has been a device in which a plurality of acting weeding rotors arranged in parallel are connected to a passenger aircraft so as to be able to move up and down.

[0003]

The paddy field working machine having the above-mentioned construction allows the middle plowing weeding operation to be performed while riding on a riding body, as compared with, for example, the case of working with a walking type weeding machine. Therefore, it is possible to reduce the amount. However, in the above-described conventional configuration, a relatively thick plate is bent into a substantially L shape on the distal end side to increase rigidity and secure mechanical strength. For example, when a smooth rotation operation is hindered by being caught by a foreign object such as a stone or a lump of stumps, an excessive load may be applied to a driving source such as an electric motor. The driver was distracted by the operation of the passenger aircraft, and the drive source such as the electric motor and the transmission mechanism in the middle were damaged, and there was a risk that good weeding work could not be continued properly. .

[0004] By the way, rice plants planted by rice transplanters are:
Since weeds are arranged with a predetermined left-right spacing (between strips) and a predetermined front-rear spacing (between stocks), weeds will infiltrate between the strips and stocks. This is a configuration that rotates around the axis of the horizontal axis and acts on the streak, so that weeding can be performed between the streaks, but weeding between the plants cannot be performed. Some walking-type weeding machines that have been conventionally used are equipped with a between-row weeding rotor that acts between the left and right rice stumps and a between-stood weeding rotor that acts between the preceding and succeeding rice stumps. However, only the weeding device equipped with the strip weeding rotor has been researched and developed as a type mounted on a passenger aircraft, and the weeding effect has been insufficient.

[0005] As a weeding device for weeding between plants as described above, a weeding rotor having the same structure as the above-mentioned inter-row weeding rotor in the prior art is used, and an electric motor or a hydraulic motor is used. It is configured to be driven separately, for example,
It is conceivable to perform weeding between plants by adopting a new structure that slides laterally or changes the axis of rotation in the front-rear direction. The number of expensive drive mechanism parts increases, the structure becomes complicated and the cost becomes high.In addition, there is a risk of damage due to interference with foreign objects as described above, and the driver is distracted by the operation of the passenger aircraft. In addition, there is a possibility that the weeding rotor acting between the plants may be erroneously brought into contact with the rice plants, thereby damaging the rice plants.

The present invention has been made in view of the above point, and an object of the present invention is to provide a paddy field weeding machine capable of coping with riding work and performing middle tillage weeding work in as good a condition as possible. The point is to provide.

[0007]

Means for Solving the Problems [Structure, operation and effect of the invention according to claim 1]

(Structure) In the paddy weeding machine according to the first aspect of the present invention, the weeding device is connected to the rear part of the riding body so as to be movable up and down.
The weeding apparatus is provided with a strip weeding mechanism in which a plurality of strip weeding rotors rotationally driven around a horizontal axis are arranged in parallel along the machine body lateral direction so as to act on a plurality of strips. Each of the inter-row weeding rotors is configured to include a plurality of weeding claws provided at appropriate intervals along the lateral direction of the fuselage, and the weeding claws are elastically retractable and displaceable in the rotation direction. Is provided.

(Operation) According to the above configuration, the weeding device can perform the weeding operation in a plurality of spaces while traveling on the riding body. In other words, the muddy weed rotor provided with a plurality of weeding claws at appropriate intervals along the fuselage lateral direction is driven to rotate around the horizontal axis, so that mud is passed through the gap between the respective weeding claws. It is possible to properly excavate the roots of the weeds between the strips while allowing the escape. And since each said weeding claw is provided so that it can be elastically retracted and displaced with respect to the rotation direction, for example, even if it is stuck on By elastically retreating, the overload is applied to the drive source and the drive transmission system, and it is possible to prevent them from being damaged.

(Effects) As a result, the weeding rotor that is driven to rotate can properly perform weeding between the streaks while the drive system for the weeding rotor between the strips is less likely to be damaged due to overload. It has become possible to provide a paddy field weeding machine that can be used in riding work and that can perform middle tillage weeding work in an appropriate state as much as possible.

[Structure, operation and effect of the invention according to claim 2]

(Structure) The paddy field weeding machine according to the second aspect of the present invention is configured such that a weeding device is connected to the rear part of the riding body so as to be movable up and down.
The above-mentioned weeding device comprises a plurality of inter-row weeding rotors rotatably driven around a horizontal axis, and a plurality of inter-row weeding rotors arranged in parallel along the lateral direction of the machine so as to act on a plurality of inter-rows. A plurality of weeding operation tools for weeding between plants that perform weeding are arranged in parallel along the lateral direction of the fuselage so as to act between the respective plants in a plurality of rows. The operating tool is constituted by a rod body extending downward from the drive support portion and having a distal end bent and formed in a substantially L-shape so as to assume a substantially horizontal posture toward the rear of the body, and the rod body is provided. Is reciprocated in the lateral direction of the aircraft to perform weeding between plants.

(Action) According to the above configuration, the weeding operation between a plurality of streaks can be favorably performed by the weeding rotor which is driven to rotate around the horizontal axis in the weeding mechanism while traveling on the riding body. It can be carried out. In the inter-plant weeding mechanism, a weeding operation tool formed by extending the rod body downward and bending and forming an approximately L-shape so that the tip end thereof is in a substantially horizontal posture facing the rear side of the aircraft is provided in the lateral direction of the aircraft. By reciprocating, weeding between plants is performed. That is,
The tip of the rod, which is in a substantially horizontal position facing the rear of the aircraft, reciprocates in the horizontal direction while penetrating into the mud, thereby properly exhibiting the root excavation effect on the weeds between the plants and weeding between the plants. Work can be performed properly. In this way, the rod body extending in the vertical direction is reciprocated, so that it can work properly between the stocks even when actuated along with the traveling of the passenger body, and the rod body is cantilevered. Therefore, it is possible to make it possible to effectively perform the weeding work, but also to make it easy to retreat so as not to be damaged even if the tip side contacts the rice plant. Further, since the weeding tip is directed toward the rear side of the aircraft, the risk of impurities being caught by the traveling of the passenger aircraft and hindering operation is reduced as much as possible.

(Effect) Therefore, the weeding rotor that is driven in rotation can properly perform weeding between the streaks, and appropriately in a state where there is little risk of damaging the rice plant and catching foreign substances as much as possible. It has become possible to perform a weeding operation between plants, and to provide a paddy field weeding machine capable of coping with a riding operation and performing a middle tillage weeding operation in an appropriate state as much as possible.

[Structure, operation and effect of the invention according to claim 3]

(Structure) In the paddy field weeding machine according to the third aspect of the present invention, the weeding device is connected to the rear part of the riding body so as to be movable up and down.
The above-mentioned weeding device comprises a plurality of inter-row weeding rotors rotatably driven around a horizontal axis, and a plurality of inter-row weeding rotors arranged in parallel along the lateral direction of the machine so as to act on a plurality of inter-rows. A plurality of weeding operation tools for weeding between plants that perform weeding are arranged in parallel along the lateral direction of the aircraft so as to act between each plant in a plurality of rows, and the weeding operation tool is comprised of The mechanism is configured such that each of the weeding operation tools reciprocates in the lateral direction of the aircraft to perform weeding between the plants, and after the rotational power transmitted from the riding aircraft is converted into a reciprocating movement force, The reciprocating movement force is configured to be transmitted to the respective weeding operating tools interlocked and connected to each other so as to integrally reciprocate via a push-pull link, and half of the plurality of weeding operating tools are configured. When things move to one side, the other half The herbicidal operation tool is configured in the opposite directions to move in the opposite direction to that to reciprocate.

(Action) According to the above configuration, the weeding operation between the plurality of streaks can be favorably performed by the weeding rotor that is driven to rotate around the horizontal axis in the weeding mechanism while traveling on the riding body. It can be carried out. Then, in the inter-plant weeding mechanism, each weeding operation tool reciprocates in the lateral direction of the body to perform weeding between the plants. These weeding operation tools are linked to each other so as to integrally reciprocate via a push-pull link. After the rotational power transmitted from the passenger aircraft is converted into a reciprocal movement force, the weeding operation tools are connected via the push-pull link. As a result, each weeding operation tool is operated to reciprocate. Moreover, since half of the plurality of weeding operation tools reciprocate in the opposite direction to each other, for example, if all the weeding operation tools are configured to reciprocate in the same direction, a large mass reciprocates. In contrast to the disadvantage that the entire weeding apparatus vibrates, the substantially same masses move in opposite directions, thereby canceling out the mass change, thereby suppressing the vibration of the entire weeding apparatus to a minimum.

(Effect) Therefore, the weeds can be properly weeded between the streaks by the rotatably driven weeding rotor, and a plurality of weeding operating tools can be separately driven by utilizing the power from the passenger body. It is possible to perform the inter-plant weeding operation satisfactorily without causing the configuration to be complicated as in the case of driving by the, and minimizing the vibration of the entire weeding device due to the reciprocating lateral movement. It has become possible to provide a paddy field weeding machine which can cope with the above and can perform the middle tillage weeding work in an appropriate state as much as possible.

[Structure, operation and effect of the invention according to claim 4]

(Structure) In the paddy field weeding machine according to the fourth aspect of the present invention, the weeding device is connected to the rear part of the riding body so as to be movable up and down.
The above-mentioned weeding device comprises a plurality of inter-row weeding rotors rotatably driven around a horizontal axis, and a plurality of inter-row weeding rotors arranged in parallel along the lateral direction of the machine so as to act on a plurality of inter-rows. A plurality of weeding operation tools for weeding between plants that perform weeding are arranged in parallel along the lateral direction of the fuselage so as to act between the respective plants in a plurality of rows. An operating tool extends downward from the drive support portion and a rod formed by bending and forming a substantially L-shape so that the distal end portion is in a substantially horizontal posture. Is configured to do so.

(Action) According to the above configuration, the weeding rotor between the plurality of streaks can be satisfactorily removed by the strip weeding rotor which is driven to rotate around the horizontal axis in the strip weeding mechanism while traveling on the riding body. It can be carried out. In the inter-plant weeding mechanism, a weeding operation tool formed by extending the rod body downward and bending and forming a substantially L-shape so that the tip end thereof has a substantially horizontal posture facing the rear side of the fuselage is provided around a vertical axis. By rotating at, weeding between plants is performed. In other words, the tip of the rod, which is in a substantially horizontal posture, rotates around the vertical axis while entering the mud, thereby properly exhibiting the root excavation effect on the weeds between the plants, and weeding work between the plants. It can be done properly. In this way, the rod extending in the vertical direction is rotated around the vertical axis, so that the rod can be properly operated between stocks even when actuated along with the traveling of the passenger aircraft, and the rod is made cantilevered. Because it is a configuration that extends, we can effectively demonstrate weeding work,
It is also possible to adopt a configuration in which the tip end side can be easily retracted so as not to be damaged even if it comes into contact with the rice plant.

(Effect) Therefore, it is possible to properly perform weeding between the streaks by the rotatably driven weeding rotor, and to perform the weeding work between the studs as much as possible without damaging the rice plants. It has become possible to provide a paddy field weeding machine that can be used in riding work and that can perform middle tillage weeding work in an appropriate state as much as possible.

[Structure, operation and effect of the invention according to claim 5]

(Structure) According to a fifth aspect of the present invention, in the paddy field weeding machine according to the fourth aspect, the position of the tip portion in each of the weeding operation tools is provided so as to be changeable and adjustable along a radial direction.

(Operation) According to the above configuration, the following operation is obtained in addition to the operation of the fourth aspect. In other words, by changing and adjusting the position of the distal end portion in each of the weeding operation tools that are driven to rotate around the vertical axis along the radial direction, the radius of the area where the distal end portion in a substantially horizontal posture is weeded by the rotational drive. The size in the direction can be changed and adjusted,
For example, according to the size (growth degree) of the rice plant at that time, the size of the weeding action area is set to a size such that an unreasonable force is not applied to the rice plant by the rotation operation. Work can be performed.

(Effects) Therefore, the following effects are obtained in addition to the effects of the fourth aspect. Depending on the size of the rice plant, it has become possible to change and adjust to the appropriate weeding work state.

[Structure, operation and effect of the invention according to claim 6]

(Structure) In the paddy field weeding machine of the invention according to claim 6, a weeding device is connected to the rear part of the riding body so as to be movable up and down.
The above-mentioned weeding device comprises a plurality of inter-row weeding rotors rotatably driven around a horizontal axis, and a plurality of inter-row weeding rotors arranged in parallel along the lateral direction of the machine so as to act on a plurality of inter-rows. A plurality of weeding operation tools for weeding between plants that perform weeding are arranged in parallel along the lateral direction of the fuselage so as to act between the respective plants in a plurality of rows. The operating tool is configured to perform weeding between the plants by rotating around the vertical axis, and the rotational power transmitted around the longitudinal axis transmitted from the passenger aircraft side is the rotational power around the vertical axis. After that, the rotational power is transmitted to each of the weeding operation tools located on the center side via the driving force of the rotating chain, and the driving force of the rotating chain is further transmitted to the body through the flexible rotating shaft. Transmitted to the weeding control device located at the lateral end It is configured to.

(Operation) According to the above configuration, the weeding rotor between the plurality of streaks can be satisfactorily removed by the weeding rotor that is driven to rotate around the horizontal axis in the weeding mechanism while traveling on the riding body. It can be carried out. In the inter-plant weeding mechanism, each weeding operation tool rotates around the vertical axis to perform weeding between the plants. In other words, after the rotational power transmitted from the passenger body side around the front-rear axis is converted into the rotational power about the vertical axis, the weeding operation located at the center side via the rotating chain is performed. Is transmitted to the tool. Further, the driving force is transmitted to the weeding operation tool located at the lateral end of the machine body via the flexible rotary shaft. The power transmitted from the passenger aircraft side in this way
When it is possible to transmit to a plurality of weeding operation tools located on the center side with a simple transmission structure as much as possible, and when the number of rows is increased to cope with a large number of weeding work, for example, a carrier of a transport vehicle Even if the weeding operation tool located on the side in the lateral direction is folded and stored in order to facilitate loading, etc., the power can be transmitted using the flexible rotating shaft. It can be dealt with without trouble such as removing the transmission system.

(Effect) Therefore, the weeds can be properly weeded between the streaks by the rotatably driven weeding rotor, and a plurality of weeding operation tools can be separately driven by using the power from the passenger body. A configuration in which the configuration is not complicated, as in the case of driving with, and is folded and stored so that the width is large and the number of strips is large at the time of work so that the work efficiency can be improved, while the width is small at the time of non-work. Even in the case of a paddy field, it is possible to eliminate the need for cumbersome work such as removing the transmission mechanism for switching the posture, and it is possible to respond to riding work and perform middle tillage weeding work in the most appropriate state as much as possible We can now provide weeding machines.

[0031]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 illustrates an overall aspect of a paddy field weeding machine according to the present invention. This paddy weeder is provided at the rear of a four-wheel drive type riding body 1 having a steering front wheel 2 and a rear wheel 3 via a lifting / lowering link mechanism 5 having a parallel quadruple link structure driven by a hydraulic cylinder 4. The weeding device 6 is structured so as to be able to move up and down freely.
It is configured to perform the weeding work of Article 0.

As the riding body 1, a body of a riding rice transplanter is used, and the output of an engine 7 mounted on the front of the body is transmitted to a hydrostatic continuously variable transmission (HST) 8 at the rear of the body. After the shift, the transmission is transmitted to the left and right rear wheels 3 pivotally supported by the rear transmission case 9, and the transmission power branched from the transmission system to the rear wheels 3 is transmitted to the front axle case 10, and the left and right front wheels 2 are transmitted. Is driven.
Here, as shown in FIG. 2, the left and right front wheels 2 and the rear wheels 3 are each set to a tread straddling four rice stumps F.

A connecting frame 6A (connected) is detachably connected to the weeding device 6 via a hook-type hitch mechanism 12 which is connected to and released from the rear end of the lifting link mechanism 5 by operating a lever 11. ), And the apparatus main body 6B is supported on the connection frame 6A so as to be freely rollable around the longitudinal axis a. That is, a main frame 14 in the form of a hollow rectangular frame extending long in the width direction is provided in the apparatus main body 6B, and is fixed to the main frame 14 so as to protrude forward as shown in FIG. The fulcrum pin 14c is provided on the pivot boss 6 provided on the connecting frame 6A.
a, and is supported in a freely rolling manner around the axis a of the fulcrum pin 14c. Then, as shown in FIG.
A pair of right and left balance springs 16 are stretched over the connection frame 6A, and a moderate elastic resistance and a biasing force for returning to the horizontal position are given to the rolling operation of the weeding device 6, and the regulation provided on the connection frame 6A side. The tool 17 contacts the main frame 14 to regulate the limit position of the rolling operation,
It is configured to prevent rolling operation more than necessary. As shown in FIG. 14, the main frame 14 is configured such that the end frame portions 14a located on both left and right ends swing about the longitudinal axis n with respect to the central frame portion 14b via the bracket 200. In a usage state in which the apparatus is retracted to the inside of the body, and in a usage state in which the apparatus is horizontally aligned, the coil spring 19 urges the apparatus downward to hold the position.
In addition, the contact is restricted by a contact restricting member 201 provided continuously to the position 0, and the posture is maintained by connecting the left and right end frame portions 14a by the urging force of the coil spring 19 and the connecting member 20. . In the figure, 202 is
It is a contact restricting tool that restricts free rolling of the weeding device 6 by contacting the lifting link mechanism 5 during non-working time when the weeding device 6 is largely lifted by the lifting link mechanism 5.

Then, as shown in FIG. 5, the inter-row weeding mechanism J1 and the inter-plant weeding mechanism J2 move back and forth while being supported by the support frame 18 fixed to the central frame portion 14b of the main frame 14. Equipped side by side. The strip weeding mechanism J1 is configured by arranging eleven strip weeding rotors 21 rotating around the horizontal axis b at the same pitch as the strip pitch P so as to be located between the strips of the rice plant F. As shown in FIG. 7, the pair of weeding mechanisms J1 is stably supported by a pair of left and right support arms 22R and 22L connected and supported by the support frame 18. Then, as shown in FIG. 6, each support arm 22R, 22L
One of them 22L is configured as a chain transmission case that also serves as a transmission mechanism, and the inter-row weeding rotor 21 is rotationally driven by the rotational power transmitted from the chain transmission case. The other support arm 22R is connected to the support frame 18.
It is configured to be detachably connected to bolts,
As will be described later, each strip weeding rotor 21 can be easily removed.

Here, the support arms 22R, 22L
Only the strip weeding rotor 21 acting in the strip where
The support arms 22R, 22L must be divided into left and right parts.
An unprocessed area that cannot be weeded is formed by an amount corresponding to the lateral width of 2L. However, the support arms 22R and 22L are arranged immediately behind the rear wheel 3 so that the front rice paddle is moved to the front wheel 2.
When the rear wheel 3 passes, the weeds are depressed and buried in the rice field, so that even if the strip weeding rotor 21 is divided right and left and the middle is empty, there is actually no untreated area and weed weeding. Will be performed.

As shown in FIG. 11, the strip-width weeding rotor 21 having a standard width is provided at an appropriate pitch in the circumferential direction over the outer peripheral portions of a pair of left and right disc-shaped disks 25 arranged at regular intervals. A plurality of weeding claws 26 integrally provided at appropriate intervals along the lateral direction of the machine body are bolted to the stay 25a, and the weeding claws 26 are elastically retracted in the rotation direction. It is provided freely. In other words, each of the weeding claws 26 is made of a plate material and is made into a flat plate shape by a sheet metal press working. In addition, those that are adjacent to each other in the circumferential direction are configured so that the arrangement positions of the weeding claws 26 are shifted from each other in the axial direction (specifically, by changing the number of weeding claws) so that an unprocessed area does not occur. (See FIG. 10).

The support structure of the weed rotor 21 will now be described. As shown in FIGS. 8 and 9, a short rotation is provided at the lower ends of the support arms 22R and 22L so as to protrude slightly to the left and right sides. A shaft 23 is rotatably supported by bearings, and a cylindrical drive shaft 24 of each strip weeding rotor 21 is interlockedly connected to these rotary shafts 23 so as to rotate integrally. The tubular drive shaft 24 located between the left and right support arms 22R and 22L is configured to be integrally connected to the inter-row weeding rotor 21 supported by the drive shaft 24. Each of the rotary shafts 23 is connected so as to be integrally rotated by a square fitting. And
The drive shafts 24 located on both left and right outer sides of the support arms 22R and 22L are configured to be divided for each strip weeding rotor 21, respectively, and as shown in FIGS. A long bolt 2 which is externally supported in a square fitting state on a central shaft 24 'which is extended in the direction and which is rotatable integrally with the rotating shaft 23 by a square fitting so as to be inserted into the central shaft 24'.
7 and is driven by being tightened and connected to each of the rotating shafts 23. Therefore, by removing the bolts 27, it is possible to remove the four weed rotors 21 on the left and right each supported by the center shaft 24 '. Also, by removing one support arm 22R from the support frame 18 by removing the bolt connection,
The drive shaft 24 located between the left and right support arms 22R and 22L and the weed rotor 21 supported by the drive shaft 24 can be integrally removed (see FIG. 7B). In this way, by removing all the weed rotors 21 between the strips, maintenance work such as cleaning work or replacement work can be easily performed. Further, when loading the vehicle, by removing only the weeding rotors 21 between the strips located on the left and right sides of the support arms 22R and 22L, the lateral width is reduced, and the loading operation or the like can be easily performed.

As shown in FIGS. 6 and 7, an input bevel case 29 for receiving power from the machine body side is provided at the left and right center of the support frame 18, and an output extending from the input bevel case 29 to the left and right. The power is transmitted to one support arm 22L also serving as a chain transmission case via the shaft 30, and the chain transmission mechanism T mounted on the support arm 22L is provided.
, The rotating shaft 23, that is, the driving shaft 24 is driven. Also, the input shaft 2 of the input bevel case 29
9 a and a PTO shaft 31 provided in the rear transmission case 9 of the passenger aircraft 1 are linked and connected by a transmission shaft 32. Here, the PTO shaft 31 is used for transmitting power to the seedling planting device when the planting device is connected, and the power branched from the traveling power transmission system is taken out.
It is possible to carry out inter-stock shifts to adjust the stocks. Therefore, even when the weeding device 6 is connected, the speed of the PTO shaft 31 is changed using the inter-stock speed change, and
Can be driven at a suitable speed.

A weeding body 35 is attached to the main frame 14 as a cover body for preventing the rice plant F from contacting the inter-row weeding rotor 21. This herb body 35
Are generally formed in a generally U-shape in a rear view in plan view, and are rotatably supported on the main frame 14 around a horizontal axis c via a support bracket 36 so as to prevent interference with rice plants. The working posture approaching the front side of the weed rotor 21 (see FIG. 16A) and the non-working posture rotating upward and away from the weed rotor 21 (see FIG. 16B)
), And the positions are held by the toggle spring 37 in each of the above-mentioned positions by the biasing force of the toggle spring 37.
In other words, the locking pin 35a, which rotates together with the weeding body 35, is pressed and urged by the toggle spring 37 and held in position in a state where it is restricted by the edge of the support bracket 36.

The weeding mechanism J1 is provided with an upper cover 38 for covering the upper side of each of the weeding rotors 21. An end-side cover located at an end of the upper cover 38 in the lateral direction of the machine body. The portion 38a is provided so as to be detachable from the center side cover portion 38b, and is configured so as to be positioned in a proper connection state in which connection work is possible by fittingly connecting the connection portions provided on the center side cover portion 38b. I have. Specifically, as shown in FIGS. 2, 3, and 5,
The upper cover 38 is a hollow pipe-shaped three horizontal rods 3 connected to the entire length in the lateral direction of the fuselage and extended over flange portions 41a and 41b as described later.
A plate 40 made of a synthetic resin material bent in an arc shape is fixedly attached to these horizontal rods 39. As shown in FIG. 17, each of the horizontal rods 39a, the left and right flange portions 41a, and the plate body 40a constituting the end side cover portion 38a located on the end side in the lateral direction of the fuselage are integrally fixed. Similarly, the center side cover portion 38b located on the center side of the fuselage
9b, the left and right flange portions 41b and the plate body 40b are integrally fixed to each other, and each of the horizontal bars 39a in the end side cover portion 38a and each of the horizontal bars 39b in the center side cover portion 38b located at the center side of the fuselage. Are configured to have different diameters so that they can be inserted and fitted to each other, and in a state where they are inserted and fitted and positioned in a proper connection state, the end side cover portion 38a and the center side cover portion 38b abut each other. The flange portions 41a and 41b provided on the portions are connected to each other by fastening them with bolts. That is, the horizontal rods 39b in the central cover portion 38b are made to project laterally outward from the flange portion 41b, and the opposed open ends of the horizontal rods 39a in the end side cover portion 38a are connected to the flange portion 41a. It is configured such that it can be inserted and exposed to the outside, and each horizontal rod 39b in the center side cover portion 38b can be inserted and mounted. In this manner, when loading the vehicle, by removing the end-side cover portion 38a located on the end side, the lateral width is reduced and the loading operation or the like can be easily performed.

Next, the configuration of the inter-plant weed control mechanism J2 will be described. As shown in FIG.
Is a method in which eleven inter-plant weeding rotors 42 as a weeding operation tool for inter-plant weeding that perform weeding between plants are arranged in parallel along the lateral direction of the machine so as to act between each plant in a plurality of rows. It is configured. As shown in FIGS. 18, 19, and 25, the inter-plant weeding rotor 42 is formed to extend obliquely downward from the drive support unit 43 and bend in a substantially L-shape such that the tip end is in a substantially horizontal posture. The weeding tine 44 as a rod is rotated around the vertical axis d to perform weeding between plants. This weeding tine 44
As shown in FIG. 12, a base end portion 44a bent in a substantially U-shape is fixedly fastened with a bolt to a drive support portion 43 formed of a disk fixed to the vertical drive shaft 45, When the bolt is loosened, the set position in the radial direction, that is, the outer diameter of the weeding action area can be changed.
A cover 45a is provided to cover each of the vertical drive shafts 45 in the vicinity of the front side of the fuselage, so that a thin rice plant or the like is not wrapped. In addition, each of the vertical drive shafts 45 is configured to be connectable and separable at an intermediate portion thereof by a plug-in configuration with a pin retaining structure so that the entire inter-plant weeding rotor 42 can be removed. .

The inter-plant weeding mechanism J2 is provided with a frame rod 46 as a long support extending over the entire width of the weeds.
Each inter-plant weed rotor 42 is supported by the frame rod 46. And weed weed mechanism J1
The weeding mechanism J of the frame rod 46 can be changed and adjusted so that the action depth and action angle for weeding on the field by the inter-stock weeding rotor 42 can be changed and adjusted in a state where the grounding action is applied.
A posture adjusting means K for changing and adjusting the relative posture with respect to the position 1 is provided. That is, as shown in FIG. 2 and FIG. 25, a pair of left and right rotating frames pivotably supported around the horizontal axis e with respect to the support frame 18 supporting the inter-row weeding mechanism J1. A pair of left and right vertical arms 48 integrally provided from the frame rod 46 is provided on the rotating frame 47.
Are pivotally supported at the rear end portions so as to be rotatable around a horizontal axis f. A rotary operation type screw type is provided between the upper end side of the vertical frame portion 18a erected from the support frame 18 and the first intermediate frame 50 erected over a bracket 49 fixed to the left and right rotary frames 47. The length adjusting mechanism 51 is connected, and the support frame 18 and the rotating frame 4 are connected.
7 is configured to be changeable around the horizontal axis e and regulated at the adjustment position. A second intermediate frame 52 extending over a bracket 49 fixed to the left and right rotating frames 47;
And a turnbuckle mechanism 53 is provided between them so that their relative rotation postures can be changed and regulated at the adjustment position. Therefore, by adjusting the length adjusting mechanism 51, each inter-plant weeding rotor 42 swings up and down around the horizontal axis e to change the working depth of weeding on the field by the inter-plant weeding rotor 42, and a turnbuckle mechanism. By the adjustment of 53, each inter-plant weeding rotor 42 swings around the horizontal axis f, so that the weeding action angle of the inter-stood weeding rotor 42 on the field can be changed. That is, the posture adjusting means K is configured by the length adjusting mechanism 51 and the turnbuckle mechanism 53.

Further, in this inter-stock weeding mechanism J2, the end-side support portions 46a located at both side ends of the frame rod 46 in the lateral direction of the body are linearly connected to the center-side support portion 46b, and 11 The central position includes a working posture in which the inter-stock weeding rotors 42 are arranged side by side in the lateral direction of the machine body and a storage posture in which the inter-stock weeding rotors 42 (two pieces) supported by the inter-stock weeding rotors are retired toward the inside of the machine. It is rotatably supported by the support portion 46b. In other words, as shown in FIGS. 18 and 19, each end-side support portion 46 is rotatably supported around the front-rear axis g with respect to the center-side support portion 46b via the bracket 54. In the posture, the hook portion 55a provided on the end portion side support portion 46 is locked and held by the buckle mechanism 55, and in the retracted posture in which the inside of the machine is retracted, FIG.
As shown by an imaginary line, the contact restricting portion 54a provided integrally with the bracket 54 with respect to the frame rod 46 contacts the upper surface of the central support portion 46b, and further rotation is restricted. And both end side support portions 4 on both the left and right sides.
6a are connected by a connecting rod 56 to regulate the position. In this manner, weeding work can be efficiently performed over a wide area in the working state, and can be easily loaded on a bed or the like in a narrow state during transportation by a vehicle or the like.

Next, the transmission structure for the inter-plant weeding mechanism J2 will be described. As shown in FIG. 6, the power from the passenger body 1 is supplied to the inter-stock weeding mechanism J2 via a transmission 57, and the transmission 57 includes a pair of belt transmissions having different transmission ratios. The gear shift is performed by selectively turning on and off the devices 58 and 59. Note that the transmission 57 is provided with each of the belt transmissions 58 and 59.
The two operating tools 60 and 61 corresponding to the first and second operating tools 6 and 61 are configured to be integrally operated so that the speed can be changed.
By operating 0 and 61 in the opposite direction, the gearshift is in a neutral state.

More specifically, as shown in FIGS. 18, 20 and 25, a pair of drive pulleys 62 and 63 having different diameters provided on the output shaft 30 and the frame rod 46 are provided.
The transmission belts 69 and 70 are wound around a pair of driven pulleys 67 and 68 of the same diameter provided on a horizontal input shaft 66 provided on a bevel gear case 65 supported by a bracket 64 standing upright. In addition, the operation belt 6 that can be manually operated is
0, 61 by swinging back and forth, the tension pulley 7
It is provided so as to be freely switchable between a state in which the transmission is started by applying the tension by the first and second 72 and a state in which the transmission is turned off by releasing the tension. As shown in FIGS. 23 and 24, the operating tools 60 and 61 are arranged so that the bar is bent into a substantially L shape so that their free ends face each other. In a normal working state, The free ends are connected to each other by a connecting member 73 so that they can be integrally rotated.

That is, when one of the belt transmission devices (for low-speed driving) 58 is operated to the front side by operating the corresponding operating tool 60, the tension pulley 72 is switched to the transmission disconnection via the link 60a pivotally connected. The belt transmission device (for high-speed driving) 59 is configured to be switched to transmission when operated rearward, and the link 61a pivotally connected when the corresponding operating tool 61 is operated forward.
, The tension pulley 71 is switched to the power-on state, and is switched to the power-off state when operated rearward. Therefore, when the operating tools 60 and 61 are integrally operated to the front side, a high-speed driving state is obtained (see FIG. 20), and when the operating tools 60 and 61 are integrally operated to the rear side, a low-speed driving state is obtained (FIG. 21). reference). In other words, high and low 2
The gears can be shifted in stages. The transmission 7
5 is configured to cover the outer side with a transmission cover 75a. Then, when it is necessary to easily switch between the driving state and the non-driving state during maintenance work such as adjustment of the weeding operation state at the time of non-working, as shown in FIG.
Remove the beta pin 205 for holding the position and
By disengaging the connection and operating the operation tools 60 and 61 in directions opposite to each other, that is, in the power-off state, it is possible to set the gearshift to the neutral state (see FIG. 23).

As shown in FIGS. 6 and 18, the power transmitted to the horizontal input shaft 66 is transmitted to a vertical drive shaft 75 by a bevel gear mechanism 74 in a case 65, and the power of the vertical drive shaft 75 is transmitted to a pair. Are divided into left and right sides by the rotating chains 76, 77, respectively.
At 7, four inter-plant weeding rotors 42 on the left and three on the right
Are directly driven. Then, as shown in FIG. 19, the driving force of each of the rotating chains 76 and 77 is transmitted to the inter-plant weeding rotor 42 located at the lateral end of the machine body via the flexible rotating shaft 78, and the power is transmitted. It is configured to be transmitted to the inter-plant weeding rotor 42 located at the endmost side via the rotating chain 79. By using the flexible rotating shaft 78 in this manner, each end-side support portion 4 of the frame rod 46 can be used.
Even when the switch 6a is switched from the working position to the retracted position, the turning operation can be performed as it is, and no cumbersome operation such as removing the transmission mechanism is required. The outer sides of the rotating chains 76, 77, 79 are covered with chain covers 206, 207.

As explained above, the weeding device 6
Not only for the main frame 14 and the strip weeding mechanism J1 but also for the stock weeding mechanism J2, the working state in which the width along the machine body lateral direction is set to a predetermined working width, and the width is reduced to a width smaller than the predetermined width. It is configured to be freely switchable to a set non-working state, so that it can be easily loaded on a carrier or the like in a narrow state during transportation by a vehicle or the like.

The basic configuration of the weeding device 6 is as described above. In the weeding work at the time of growing, the diameter of the rice plant F is large and the rooting strength is sufficient. As shown in FIG. 10, the between-line weeding mechanism J1 and the between-line weeding mechanism J
2 is used for weeding. At this time, the right and left inter-plant weeding rotors 42 urged to approach the rice plant F side enter the inter-plant with the forward movement and perform weeding. At this time, even when the rods of the inter-plant weeding rotor 42 come into contact with the rice plant F, they rotate while retreating and displaced, so that the rice plant F is not damaged.

Next, a description will be given of a structure for controlling the raising and lowering of the weeding device 6 having the above configuration. At the center of the main frame 14, a sensor float 80 functioning as a grounding sensor for controlling the lifting and lowering of the whole weeding device 6 is provided. Is provided.
As shown in FIGS. 26 and 27, an upper link 83, a lower link 84, and a vertical link 85 are attached to a support fitting 82 fixed to the center of the main frame 14 in a parallel quadruple link shape. The rear end of the ground sensor (sensor float) 80 is pivotally connected to the rear extension end of the link 84 so as to be vertically swingable.
The front portion of the grounding sensor 80 is vertically movably supported via a bending link 86, and the lever 83a extending from the upper link 83 is swung to be adjusted and fixed to the supporting bracket 82 with the knob bolt 87. The rear fulcrum h of the ground sensor 80
It can be adjusted up and down in stages.

A sensor bracket 91 is also supported on the front surface of a bracket 88 fixed to the front of the support fitting 82 via an upper link 89 and a lower link 90 so as to be vertically movable in a parallel quadruple link shape. The operating lever 92a of the rotary potentiometer 92 attached to the side of the sensor bracket 91 and the ground sensor 80 are connected to the sensor rod 9
3 and a voltage detection signal corresponding to the amount of vertical swing around the rear fulcrum h of the ground sensor 80 is output by the potentiometer 92.
Is output from A rod 94 pivotally extended upward from the operating lever 92a is inserted into the upper bent side 91a of the sensor bracket 91, and the operating lever 92a is pressed downward by a sensor spring 95 externally fitted to the rod 94. It is being rushed.
A stroke absorbing spring 96 that has been initially compressed is externally fitted to the sensor rod 93, and an operating lever 92a is provided.
After reaching the upper swing limit, when the ground contact sensor 80 is further displaced upward, the stroke absorbing spring 96 is compressed and deformed to absorb the excess stroke.

A pin 97 projecting forward from the upper portion of the vertical link 85 is engaged with an extension 89a of the upper link 89, and the sensor bracket 91 moves up and down in the opposite direction with respect to the vertical displacement of the vertical link 85. It is designed to be displaced. For example, when the vertical link 85 is displaced upward,
When the rear fulcrum h is moved downward, the sensor bracket 91 is displaced downward by the same amount as the rear fulcrum h, and the relative positional relationship between the potentiometer 92 and the ground sensor 80 regardless of the height adjustment of the ground sensor 80. Change is not brought about.

The detection output from the potentiometer 92 is input to a control device 98, and is compared with a preset reference value (including a dead zone). Accordingly, the operation of the electromagnetic control valve 99 of the hydraulic cylinder 4 is controlled, and the weeding device 6 is raised or lowered.

For example, if the weeding device 6 is at a set height with respect to the rice field and the ground pressure acting on the ground sensor 80 is within a set range, the detection output from the potentiometer 72 is within the reference value, and the electromagnetic control valve 99 remains neutral. Here, when the weeding device 6 is about to sink below the rice field due to the sinking of the body or the downward inclination, and the contact pressure acting on the contact sensor 80 becomes larger than a set value, the contact sensor 80 compresses and deforms the sensor spring 95. As the operating lever 92a of the potentiometer 92 moves upward, the control valve 79 is switched to the rising side, the hydraulic cylinder 4 is extended and the weeding device 6 is raised. When the ground pressure acting on the ground sensor 80 decreases due to this rise and returns to the original set range, the operating lever 92a of the potentiometer 92 also returns to the original reference position, and the control valve 9
9 is returned to neutral, and the ascent control stops.

Conversely, if the weeding device 6 starts to float on the rice field surface due to the rise or inclination of the body, the grounding pressure acting on the grounding sensor 80 becomes smaller than the set value, and the grounding sensor 80 is turned on by the sensor spring 95. Due to the elastic force and the own weight, the actuator is oscillated downward, the operating lever 92a of the potentiometer 92 operates downward, the control valve 99 is switched to the descending side, the hydraulic cylinder 4 is shortened, and the weeding device 6 is descended. This lowering causes the ground pressure acting on the ground sensor 80 to increase, and when it returns to the original set range, the operating lever 92a of the potentiometer 92 also returns to the original reference position, and the control valve 99 is returned to neutral to lower the lowering control. Stops. That is, in this elevating control, the potentiometer 72
The operation of the hydraulic cylinder 4 is controlled so that the operating position of the operating lever 72a, that is, the attitude of the ground sensor 80 is maintained at the set attitude.

The controller 78 is connected to a sensitivity adjuster 100 composed of a potentiometer. The sensitivity adjuster 100 is provided near the driving section of the passenger aircraft 1, and can be operated in a dial type to adjust the reference value to be compared with the detection output from the potentiometer 92. For example, assuming that the setting posture of the ground sensor 80 when the sensitivity adjuster 100 is set in the middle of the adjustment range is substantially horizontal, when the sensitivity adjuster 100 is adjusted to the sensitive side, the setting posture of the ground sensor 80 is lowered forward. In contrast, if the adjustment is made to the insensitive side, the set posture of the grounding sensor 80 is changed to the front ascending side.

When the set attitude of the ground sensor 80 is changed to the forward-lowering side, the ground sensor 80 itself is grounded to the front, thereby easily receiving the ground pressure. 9
5, the downward urging load of the ground sensor 80, that is, the sensor load is reduced. Therefore, when the sensitivity adjuster 100 is adjusted to the sensitive side, the contact sensor 80 is in a control neutral state with a small contact pressure, and is stabilized in a shallow subsidence state with respect to the rice field, and accordingly, the weeding device 6 with respect to the rice field with respect to the rice field is stable. The working depth becomes shallow. Conversely, if the set posture of the ground sensor 80 is changed to the forward rising side, the contact area of the ground sensor 80 itself retreats to the fulcrum side, and it becomes difficult to receive the ground pressure. Becomes shorter,
The downward urging load of the ground sensor 80 by the sensor spring 95, that is, the sensor load increases. Therefore, when the sensitivity adjuster 80 is adjusted to the insensitive side, the contact sensor 80 is in a control neutral state with a large contact pressure, and is stabilized in a state where the eyes are deeply sunk with respect to the rice field. The working depth increases.

Accordingly, in this paddy field weeding machine, the operation lever 62a is adjusted to change the height of the ground sensor 80, so that the weeding action depth can be largely adjusted and the sensitivity adjuster 1 can be adjusted.
By changing the reference attitude of the ground contact sensor 80 using 00, it is possible to finely adjust the weeding action depth.

Also, it is necessary to adjust the left and right floats 81 in accordance with the vertical height adjustment of the grounding sensor 80, and the adjustment structure is shown in FIG. That is, a float bracket 102 which can swing up and down around a fulcrum i is attached to a support fitting 101 which is fixedly fastened to the main frame 14 so as to adjust the left and right positions. The float 81 is supported so as to be able to swing up and down around a fulcrum k. The support bracket 101 is provided with an auxiliary arm 103 that can swing up and down around a fulcrum j. A guide pin 104 provided at the front end of the auxiliary arm 103 is provided with a guide member 105 that is provided upright from the upper surface of the float 81. The float 81 is inserted into the vertically long hole 106 and restricts the horizontal runout of the float 81 by the guide pin 104 while allowing the float 81 to move up and down. Then, the operation lever 102a extending from the float support arm 102 is swung to selectively insert the pin 108 into the connection hole 107 formed in the support bracket 101, and the float 8
One rear fulcrum k can be adjusted up and down in three stages. The auxiliary arm 103 is linked to the float support arm 102 via a link 109. The auxiliary arm 103 is linked to the vertical adjustment of the rear fulcrum k.
By displacing the third guide pin 104 in the same direction, the relative height relationship between the upper and lower long holes 106 and the guide pin 104 is kept constant regardless of the height adjustment of the float 81, and around the rear fulcrum k of the float 81. Swing range is secured.

As shown in FIG. 29, the unused weeding device 6 is separated from the riding body and placed on the ground using grounding stands 120 and 130 provided one set each on the left and right. A pair of front ground stands 120
Is provided on the connection frame 6A, and a pair of ground stands 130 on the rear side are provided on the frame rod 46. Each of the ground stands 120 and 130 has an outer cylindrical portion 120 fixed to the connection frame 6A and the frame rod 46.
a, 130a, the inner cylindrical portions 120b, 130b are slidably fitted inside, and the fixing pins 1
20c and 130c are configured to switch between an operating position protruding downward and a non-operating position contrasting upward and fixed. The connecting frame 6A and the frame rod 4
6 can be rolled freely around the longitudinal axis, so that when the grounding stands 120 and 130 make contact with the ground, they can follow appropriately even if the grounding surface has some irregularities by rolling.

[Another Embodiment] The present invention can also be carried out in the following modes. (1) In the above-described embodiment, the case has been exemplified in which the weeding operation tool of the inter-stock weeding mechanism J2 is constituted by the rotary drive type inter-stock weeding rotor 42, but the following construction is used instead of such a construction. Is also good. The configuration other than the inter-stock weeding mechanism J2 is the same as that of the above-described embodiment, and therefore the description is omitted. As shown in FIG. 30 to FIG.
2, each of the weeding operation tools 42a is formed of a rod body extending downward from the drive support portion 43a and having a distal end bent and formed in a substantially L-shape so as to assume a substantially horizontal posture toward the rear side of the fuselage. The bar is reciprocated in the lateral direction of the machine to perform weeding between plants. or,
After the rotational power transmitted from the passenger body 1 is converted into a reciprocating movement force, the reciprocating movement force is applied to the weeding operation tools 42a interlocked with each other so as to integrally reciprocate via a push-pull link. When the half of the plurality of weeding operation tools 42a moves to one side, the other half of the weeding operation tools 42a are opposite to each other so as to move in the opposite direction. It is configured to reciprocate in the direction. More specifically, in a state in which a pair of weeding operation tools 42a are provided for the frame rod 46 so as to be located on both left and right sides with respect to each row of rice plants, a state in which the lower end portion enters mud. Each is pivotally supported so as to swing left and right around the longitudinal axis m. The power transmitted to the lateral output shaft 66 is transmitted to the bevel gear mechanism 1.
The rotation power of the front-rear drive shaft 112 is converted by the eccentric crank 113 into a reciprocating push-pull movement by the vertical push-pull link 114, and is distributed from the vertical push-pull link 114. A plurality of weeding operation tools 42a are arranged on the left and right sides via a push-pull link 116 in such a manner that the driving support portions 43a of the respective weeding operation tools 42a are interlockingly connected via a push-pull link 116. Are linked so as to reciprocate in opposite directions. In addition, this weeding operation tool 42
In a, the bolt is loosened so that the vertical mounting position (depth for weeding operation) with respect to the drive support portion 43a can be changed and adjusted.

Also in this embodiment, the end-side support portions 46a located at both side ends of the frame rod 46 in the lateral direction of the fuselage are linearly connected to the center-side support portion 46b. The center-side support portion 46b extends over a work position in which the weeding rotors 42 are arranged side by side in the lateral direction of the machine and a retracted posture in which the weeding rotors 42 supported by the weeding rotors 42 are retired inward in the machine. In this storage position, the push-pull link 116 bends around the pivot point to allow the storage swing in this storage position, as shown in FIG.

(2) In the above-described embodiment, the weeding device is provided with the strip weeding mechanism J1 and the inter-plant weeding mechanism J2 respectively. However, only the striped weeding mechanism J1 is provided without the inter-plant weeding mechanism J2. It may be configured.

(3) In the above embodiment, the weeding device is 10
Although weeding was performed between the lines and between the lines of the rice plant line of the line, the present invention is not limited to the line of the line, and the present invention is not limited to the line of the line and the line between the lines of the line of 8 and 6 or other lines. You may comprise so that weeding may be performed.

(4) Each weed rotor 42 between the plants is
It is also possible to drive mechanically with the power of the O-shaft 31 or the power of another constant rotation speed taken out of the passenger aircraft 1.

[Brief description of the drawings]

FIG. 1 is an overall side view showing a paddy weeder.

FIG. 2 is a plan view showing a weeding device.

FIG. 3 is a front view showing the weeding device;

FIG. 4 is a front view showing the weeding device in a folded state;

FIG. 5 is an overall side view of the weeding device.

FIG. 6 is a diagram showing a transmission system of the weeding device;

FIG. 7 is a schematic plan view showing a support structure of a strip weeding mechanism.

FIG. 8 is a longitudinal rear view of the left side showing the support structure of the weeding mechanism between strips.

FIG. 9 is a right side vertical sectional rear view showing a support structure of a strip weeding mechanism.

FIG. 10 is a plan view showing a weeding action state of the weeding device.

FIG. 11 is an exploded perspective view of a strip weeding rotor.

FIG. 12 is an exploded perspective view of a stock weeding rotor.

FIG. 13 is a front view of a rolling fulcrum.

FIG. 14 is a front view of a main part showing a folding structure of the main frame.

FIG. 15 is a longitudinal side view of the vicinity of a rolling fulcrum.

FIG. 16 is a side view showing a state in which the posture of the herbicide is switched;

FIG. 17 is a perspective view showing a connection state of an upper cover.

FIG. 18 is a rear view of a main part of the inter-plant weeding device.

FIG. 19 is a rear view showing the folded configuration of the inter-plant weeding device.

FIG. 20 is a side view of the transmission in a low-speed state;

FIG. 21 is a side view of the transmission in a high-speed state.

FIG. 22 is a side view of the transmission in a neutral state.

FIG. 23 is a perspective view of a transmission.

FIG. 24 is a diagram showing a connection / disconnection state of the operation tool.

FIG. 25 is a side view of the inter-plant weeding mechanism.

FIG. 26 is a side view showing an outline of an elevation control structure and a ground sensor unit.

FIG. 27 is a front view showing a support structure of the grounding sensor unit.

FIG. 28 is a side view showing a support structure of a side float;

FIG. 29 is a side view of the weeding device removed from the passenger aircraft.

FIG. 30 is a side view showing a main part of a cross-plant weeding mechanism according to another embodiment.

FIG. 31 is a transmission system diagram of a cross-plant weeding mechanism according to another embodiment.

FIG. 32 is a partial rear view of a cross-plant weeding mechanism according to another embodiment.

FIG. 33 is a rear view showing a folded structure of an inter-strain weeding mechanism according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Riding body 6 Weeding device 21 Strip weeding rotor 26 Weeding claw 42, 42a Weeding operation tool 43, 43a Drive support part 76, 77 Rotation chain 78 Flexible rotation shaft 114, 116 Push-pull link J1 Strip weeding mechanism J2 Stock weeding Organization F Rice Plant

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Koichi Tozaki 1-40-2 Nisshincho, Omiya City, Saitama Prefecture Inside the Research Institute for Biological Sciences (72) Inventor Yoshihiko Miyahara 1-40 Nisshincho, Omiya City, Saitama Prefecture No. 2 Within the Organization for Promoting Specified Industrial Technology in Biological Sciences (72) Inventor Plow Kunisa 38 Nishirinji, Yahagi-cho, Okazaki-shi, Aichi Pref. 38 Rinjiji Plow Agricultural Machinery Co., Ltd. Inside the Sakai Plant (72) Inventor Masaki Orimoto 64 Ishizukitamachi, Sakai City, Osaka Prefecture Inside the Kubota Sakai Plant (72) Inventor Choji Teramoto Sakai, Osaka Prefecture 64, Ishizu-Kitacho, Ishizu-shi, Japan Kubota Sakai Works, Ltd. (72) Inventor Akio Kashii 64, Ishizu-Kitacho, Sakai City, Osaka Prefecture, Japan 64 (72) Inventor Shoichi Nakamura 64, Ishizu-Kitacho, Sakai City, Osaka Prefecture Address F-term in Kubota Sakai Works Co., Ltd. (reference) 2B034 AA07 BA07 BB01 BC06 BD02 BE03 BG02 HA12 HA16 HA17 HA30 HB02 HB12 HB13 HB16 HB23

Claims (6)

[Claims] A weeding device is connected to a rear portion of a riding body so as to be able to move up and down, and the weeding device is configured to act on a plurality of strip weeding rotors that are driven to rotate around a horizontal axis. It is provided with a between-row weeding mechanism which is arranged in parallel along the lateral direction, and each of the between-row weeding rotors is provided with a plurality of weeding claws provided at appropriate intervals along the lateral direction of the machine body. The weeding claw is a paddy weeding machine in which the weeding claw is provided so as to be elastically retreatable and displaceable in the rotation direction. 2. A weeding device is connected to a rear portion of the riding body so as to be able to move up and down, and the weeding device is configured to act on a plurality of inter-row weeding rotors rotationally driven around a horizontal axis. A horizontal weeding mechanism that is arranged in parallel along the horizontal direction, and a weeding operation tool for multiple weeding that performs weeding between the plants along the lateral direction of the aircraft so as to act between each plant in multiple rows. And each of the weeding operation tools extends downward from the drive support portion and has a tip portion substantially in a substantially horizontal position facing the rear side of the fuselage. A paddy field weeding machine comprising a rod bent and formed in an L-shape, wherein the rod is reciprocated in a lateral direction of the machine to perform weeding between plants. 3. A weeding device is connected to a rear part of the riding body so as to be able to move up and down, and the weeding device is configured to act on a plurality of strip weeding rotors, which are driven to rotate around a horizontal axis, between a plurality of strips. A horizontal weeding mechanism that is arranged in parallel along the horizontal direction, and a weeding operation tool for multiple weeding that performs weeding between the plants along the lateral direction of the aircraft so as to act between each plant in multiple rows. And a cross-plant weeding mechanism that is arranged in parallel with each other.The inter-plant weeding mechanism is configured such that each of the weeding operation tools reciprocates in the lateral direction of the body to perform weeding between the plants. After the rotational power transmitted from the passenger aircraft is converted to a reciprocating movement force, the reciprocating movement force is transmitted to the respective weeding operation tools interlocked with each other to integrally reciprocate via a push-pull link. And a plurality of Paddy field weeding that is configured so that when half of the grass operating tools move to one side, the other half of the weeding operating tools reciprocate in opposite directions so as to move in the opposite direction. Machine. 4. A weeding device is connected to a rear portion of the riding body so as to be able to move up and down, and the weeding device is configured to act on a plurality of inter-row weeding rotors that are driven to rotate around a horizontal axis. A horizontal weeding mechanism that is arranged in parallel along the horizontal direction, and a weeding operation tool for multiple weeding that performs weeding between the plants along the lateral direction of the aircraft so as to act between each plant in multiple rows. And each of the weeding operation tools extends downward from the drive support portion and is bent and formed into a substantially L-shape such that the tip end is in a substantially horizontal posture. A paddy field weeding machine configured to rotate weeds around a vertical axis to perform weeding between plants. 5. The paddy weeding machine according to claim 4, wherein the position of the tip portion in each of the weeding operation tools is provided so as to be changeable and adjustable along a radial direction. 6. A weeding device is connected to a rear portion of the riding body so as to be able to move up and down, and the weeding device is configured to act on a plurality of strip weeding rotors that are driven to rotate around a horizontal axis. A horizontal weeding mechanism that is arranged in parallel along the horizontal direction, and a weeding operation tool for multiple weeding that performs weeding between the plants along the lateral direction of the aircraft so as to act between each plant in multiple rows. And each of the weeding operation tools is configured to perform weeding between the plants by rotating around a vertical axis, and transmitted from the passenger aircraft side. After the rotational power around the front-rear axis is converted into rotational power about the vertical axis, the rotational power is transmitted to the respective weeding operation tools located at the center side via the driving force of the rotating chain. And the driving force of the rotating chain is flexible. A paddy field weeding machine configured to be transmitted to a weeding operation tool located at a lateral end portion of the machine body via a rotation shaft.