JP3601051B2 - Paddy field vehicle weeding device - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to the configuration of a weeding rotor provided in a suspended state at the rear of a paddy field working vehicle.
[0002]
[Prior art]
The paddy working vehicle travels in a paddy field by operation of a boarded worker, and a weeding rotor provided in a suspended state at the rear of the paddy working vehicle is pulled and rotated, and by rotation of the weeding rotor, The grass in the paddy field is scraped off and floated on the water surface to be weeded.
[0003]
[Problems to be solved by the invention]
The weeding rotor provided in a suspended state at the rear of the paddy working vehicle is rotated at a fixed position in the vertical direction, so that if there is unevenness in the paddy field, the weeding rotor will not rotate due to the unevenness, so that In some cases, weeding cannot be reliably performed. However, the present invention is intended to solve this problem.
[0004]
[Means for Solving the Problems]
For this purpose, according to the present invention, a support frame 20 is provided at the rear of the paddy field work vehicle 1 in the left and right direction, and a weeding rotor 34 for weeding by rotating the scraping claws 32 is provided on the support frame 20. in the herbicidal device paddy work vehicle Ru provided hanging state, the herbicidal rotor 34, and two of the cylindrical body 33, 33 back and forth with the scraping claws 32, 32, rotatably both tubular bodies 33 and 33 The supporting plates 30 and 30 are supported by a support shaft 27 which is supported to be able to swing back and forth with respect to the support frame 20. At the center in the front-rear direction and at the left and right laterally pivotable pins 31, the shaft is pivotally supported so as to be vertically rotatable. Further, the coaxial 27 is pivoted on the support shaft 27 in the longitudinal direction to pivot the weeding rotor 34 back and forth. That the swinging device 25 is provided. And weeding apparatus of paddy field work vehicle, characterized.
[0005]
Effect of the Invention
The paddy field working vehicle 1 travels in a paddy field by an operation of a boarded worker, and a weeding rotor 34 provided in a suspended state at the rear of the paddy field working vehicle 1 is moved back and forth by a rocking device 25 while being towed. By rotating while oscillating, the grass in the paddy field is scraped off by the rotation of the weeding rotor 34 and floated on the water surface to be weeded.
[0006]
【The invention's effect】
The weeding rotor 34 provided in a suspended state at the rear part of the paddy field work vehicle 1 is towed while rotating back and forth and rotated, so that the weeding rotor 34 always comes into contact with the soil surface of the paddy field and rotates. That is, even if there are irregularities in the paddy field scene, reliable weeding can be performed regardless of the irregularities.
In particular, the holding plates 30, 30 are supported at the center in the front-rear direction between the two front and rear cylinders 33, 33 having the scraping claws 32, so that the holding plates 30, 30 can be turned up and down by a turning pin 31, so that the rocking device can be rotated. Even when the support shaft 27 is swung back and forth at 25, the change in the posture of the holding plates 30, 30 is absorbed, and the weeding rotor 34 can always maintain a stable working posture.
[0007]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
The weeding machine has a configuration in which a paddy field working vehicle 1 running on a paddy field is provided at a front portion, and a weeding device 2 for weeding is provided at a rear portion of the paddy field working vehicle 1, and the paddy field working vehicle 1 and the weeding device 2 are provided. Will be described.
[0008]
A cockpit 4 on which an operator rides and travels is provided on the upper part of the body frame 3 of the paddy field working vehicle 1, and an operating device 5 is provided in front of the cockpit 4, and a front portion of the operating device 5 is provided. An engine 6 is provided, and a main transmission mechanism 9 having a main transmission mechanism (not shown) is provided below the vehicle body frame 3 which is driven to rotate by the engine 6. A PTO transmission case 9a containing a transmission mechanism (not shown) and a traveling transmission case 9b containing a traveling mechanism (not shown) are provided at the rear. Front wheels 7, 7 and rear wheels 8, 8 are rotatably mounted on the front and rear sides of the lower part of the body frame 3 on both the left and right sides.
[0009]
A spline-shaped PTO shaft 10 for outputting and transmitting power is provided in the PTO transmission case 9a so as to protrude rearward, and one side of a universal joint 11 is inserted into and connected to the rear end of the PTO shaft 10. It is a configuration in which the retaining is performed. The lifting device 10b that moves up and down by the operation of the lifting cylinder 10a is provided with a front portion of the traveling transmission case 9b as a pivot, and a U-shaped connecting hitch 13 is provided at the rear end of the lifting device 10b. A rear end portion of the universal joint 11 is provided in the connecting outer hitch 13 in a penetrating state, and the universal joint 11 and the lift device 10b are simultaneously lifted and lowered.
[0010]
A U-shaped connecting inner hitch 14 provided at the front of the weeding device 2 is inserted into the connecting outer hitch 13 and connected by a plurality of connecting pins 15. The transmission case 16 is provided with a spur-shaped input shaft 17 projecting to the front, and the other side of the universal joint 11 is inserted and connected to the input shaft 17. The power from the PTO shaft 11 passes through the input shaft 17 via a power transmission mechanism (not shown) in the power transmission case 16, and is transmitted to a power transmission mechanism (see FIG. 1) in an auxiliary power transmission case 16 a provided on the side of the power transmission case 16. (Not shown), the upper rotating shaft 19 provided in the lower part of the auxiliary transmission case 16a in a penetrating state is driven to rotate.
[0011]
The transmission case 16 is provided so as to be supported at a central portion of a U-shaped support plate 18, and a rectangular lateral support column 20 is provided at a lower rear portion of the support plate 18. Support plates 21 and 21 are provided at both left and right ends, and the left and right ends of the upper rotating shaft 19 are supported.
The oscillating device 25 individually holds a plurality of lower rotating cases 22 provided at predetermined intervals in the left-right direction by holding plates 23a provided at predetermined intervals in the left-right direction on the lower side surface of the lateral support receiving column 20. . An upper rotating shaft 19 is provided at an upper portion of each lower rotating case 22, and a swing shaft 23 is provided at a lower portion. The upper rotating shaft 19 and the swing shaft 23 in the lower rotating case 22 , And each sprocket (not shown) is provided so as to be pivotally supported, and a chain (not shown) is wrapped around each of the sprockets to rotationally drive the swing shaft 23. A swing crank arm 24 is provided at the shaft end of the swing shaft 23 projecting from the lower rotating case 22.
[0012]
A plurality of support rods 26 projecting rearward are provided at predetermined intervals in the left-right direction on the rear side surface of the lateral support receiving column 20, and a plurality of weeding devices are swingably provided below the rear end of the support rods 26. 2 is provided.
In the weeding device 2, a swing support shaft 27 is provided at the rear end of each support rod 26 in a swinging manner with a swing fulcrum pin 27a in a swingable manner. A supporting plate 28 having holding side walls 29, 29 is fixedly provided on the left and right sides of the supporting plate 28. A predetermined length of a central portion in the front-rear direction is formed to be narrow on both left and right sides, and both front and rear sides are made wide. Provided holding plates 30, 30 are provided. A vertically central portion between the left and right holding plates 30, 30 in the vertical direction, and a lower end portion of the holding side wall portions 29, 29 of the support plate 28 are vertically rotatable by a vertically rotating pin 31. The shaft is supported.
[0013]
A cylindrical body 33 having a predetermined length in a circular shape and side plates 33a, 33a on both left and right sides are provided at both front and rear ends between the holding plates 30, 30, and a plurality of mountain shapes are formed on an outer peripheral portion of the cylindrical body 33. In the example, the weeding rotors 34, 34 each including a scraping claw 32 mounted at a predetermined angle rearward in the rotation direction at four locations on the circumference are rotatably supported by support shafts 35, 35. The weeding rotor 34 may be provided with two or more rotors on both front and rear sides.
[0014]
Spring support shafts 36, 36 are provided between the holding plates 30, 30, and spring support plates 37, 37 are provided on the front and rear sides of the upper portion of the support plate 28 of the swing shaft 27, and these spring support shafts 36 are provided. A spring 38 is provided between the spring and the spring support plate 37.
Between the lower end of the swing support shaft 27 at a predetermined position from the upper end and the swing crank arm 24 provided on the swing shaft 23, both front and rear sides of the connection shaft 39 are rotatable by connection pins 40, 40. In this configuration, the rotation of the swinging crank arm 24 causes the swinging fulcrum pin 27a to be a swinging fulcrum, and swings the weeding rotors 34, 34 of the weeding device 2 in the front-rear direction. While the paddy field vehicle 1 is traveling, the weeding device 2 is towed while the weeding device 2 is rocking back and forth by the rocking device 25, and the scraping claws 32 of the weeding rotors 34, 34 are rotated. Then, the grass in the paddy field is scraped off and floated on the water surface for weeding.
[0015]
By setting the center position of the weeding rotors 34 in the front-rear direction in the front-rear direction to the center position of the up-down rotation by the up-down rotation pin 31, a change in posture when the weeding rotor 34 is swung back and forth is absorbed. Reference numeral 34 denotes a configuration capable of always maintaining a stable working posture.
FIG. 4 shows the weeding rotor unit.
[0016]
The rear weeding rotor 41 has a circular cylindrical body 33 of a predetermined length, left and right side plates 33a, 33a, a plurality of mountain shapes on the outer peripheral portion of the cylindrical body 33, and four rotations in the circumferential direction. The weeding rotor 41 is rotatably supported by a support shaft 35 at the rear end between the holding plates 30, 30. I have. At the front end between the holding plates 30, 30, a weeding rotor 34 is rotatably supported by a support shaft 35, and the mounting directions of the scraping claws 32 mounted on the weeding rotors 34, 41 are changed. In the opposite direction.
[0017]
Thus, the front weeding rotor 34 and the rear weeding rotor 41 of the rear side are attached so that the rotation directions of the scraping claws 32 are opposite to each other, so that they grow forward or backward with respect to the forward direction. Even for grass, weeding can be surely performed, and the herbicidal effect can be enhanced.
FIG. 5 shows a weeding rotor unit.
[0018]
Between the weeding rotors 34 on the front and rear sides, the float 42 is supported on the lower surfaces of the holding plates 30 on both left and right sides by supporting rods 43 provided at predetermined intervals downward in the front-rear direction. Provided. The front and rear sides of the float 42 are provided with bent portions 43a, 43a bent upward, and the bottom surface of the float 42 is located at a position where the scraping claw 32 of the weeding rotor 34 contacts the field. Therefore, it is configured to be located above a predetermined position.
[0019]
Thus, the float 42 is provided between the front and rear weeding rotors 34, 34, so that the posture can be stabilized and a good weeding operation can be performed. Even if the rotors 34 oscillate, the weeding device 2 is stably grounded to the ground, and a good weeding operation can be performed.
FIG. 6 shows the weeding device.
[0020]
The weeding device 44 is provided with a plurality of support rods 45 projecting upward at predetermined intervals in the left-right direction on the upper side surface of the rectangular lateral support support pillar 20 provided at the lower rear part of the support plate 18. A U-shaped upper support 46 is provided at the upper end of the 45. A plurality of U-shaped front supports 47 are provided at predetermined intervals in the left-right direction on the rear side surface of the lateral support column 20, and each of the front supports 47 has a support rod 26 protruding rearward turned up and down. A plurality of weeding rotors 34, 34 are swingably provided below the support rod 26 at the rear end thereof.
[0021]
A swing support shaft 27 is swingably provided at the rear end of the support rod 26 by a swing fulcrum pin 27a, and a support plate 28 is fixedly provided below the swing support shaft 27. The support plate 28 supports and supports the weeding rotors 34 and 34 via the holding plates 30 and 30. The swinging device 25 swings the weeding rotors 34 and 34 back and forth.
[0022]
A support plate 48 is provided on the upper side surface of the support rod 26, and a spring support shaft 49 is supported by the support plate 48 and the upper support 46 via stop pins 50, 50. A spring 51 is inserted into the outer diameter portion of the 49, and the weeding rotors 34 and 34 are vertically resilient by the spring 51. The upper end of the spring support shaft 49 inserted into the upper stop pin 50 is configured to be prevented from falling off.
[0023]
Thereby, the weeding rotors 34, 34 in each row can move up and down, respectively, so that it is possible to cope with a change in the field condition. In addition, when swinging back and forth, a vertical change can be absorbed, and better weeding can be performed.
7 and 8 show the swing device unit.
This is a configuration in which the mounting phase of the swing crank arm 24 of the swing device 52 is changed. For example, assuming that there are five rows in the left-right direction from the front and rear weeding rotors 34, 34, the mounting positions of the swinging crank arms 24 in the first, third, and fifth rows from the left are directed downward. The mounting phase of the swinging crank arms 24 in the second and fourth rows is set to a position facing upward by 180 degrees in the direction opposite to the above, and the swinging phases of the weeding rotors 34, 34 are shown in FIG. As described above, the position is shifted by a predetermined position for each group to reduce the vibration at the time of swing.
[0024]
Thereby, the oscillation at the time of oscillation could be reduced by shifting the oscillation phase of the weeding rotors 34, 34 for each group.
[Brief description of the drawings]
FIG. 1 is an overall side view of a main part. FIG. 2 is an enlarged side perspective view of a weeding device. FIG. 3 is an enlarged side view of a partially broken portion of the weeding device. FIG. 4 is a view showing another embodiment. FIG. 5 is a view showing another embodiment, and is a partially broken enlarged side view of the weeding device. FIG. 6 is a view showing another embodiment, and is a partially broken view of the weeding device. FIG. 7 is an enlarged side view showing another embodiment, in which a part of the weeding device is broken. FIG. 8 is a diagram showing another embodiment, and an enlarged plan view of a weeding rotor unit. Description】
1 Paddy field work vehicle
20 Horizontal support pillar (support frame)
25 rocking device
27 Support shaft
30 holding plate
31 Support pin
32 scraping claws
33 cylindrical body 34 weeding rotor

Claims (1)

A support frame 20 disposed in the lateral transverse direction to the rear of the paddy field work vehicle 1 is provided, the support frame 20, Ru provided a suspended state herbicidal rotor 34 to herbicides by rotating the scraping claws 32, 32 paddy work In the weeding device for a car, the weeding rotor 34 includes two front and rear cylinders 33, 33 having the scraping claws 32, 32, and holding plates 30, 30, which rotatably support both cylinders 33, 33. In addition, the holding plates 30, 30 are attached to the support shaft 27 which is supported to be able to swing back and forth with respect to the support frame 20, at the front and rear central portions of the two front and rear cylindrical bodies 33, 33 and in the left and right lateral direction. And a swinging device 25 for swinging the coaxial 27 in the front-rear direction and swinging the weeding rotor 34 back and forth is provided on the support shaft 27 . Of paddy field working vehicle Grass apparatus.

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