JP6579606B2 - Pricking machine - Google Patents

Description

  The present invention relates to a farming machine that is used by being mounted on a tractor, and relates to a tilling device that rotates and cultivates a tilling rotor provided with a plurality of tilling claws. Specifically, the present invention relates to a structure of a leveling plate portion provided behind the tilling rotor.

  As a prior art, a rotor connected to a traveling vehicle such as a tractor and having a crushing shaft that is a crushed material, and a rear cover that is a leveling pressure-suppressing portion that covers the rear part of the crushed material are pivotally supported in a vertically rotatable manner, A farming machine is known in which a rake body is disposed between the rear cover and used for tilling and plowing work in fields and paddy fields. For example, Japanese Patent Laid-Open No. 2010-148422 (Prior Art 1) states that “a rake body is disposed between the rotor and the rear cover, and the rake body is coaxial with the vertical rotation center of the rear cover. There is a disclosure of a rake device for a tilling and crushing earth working machine, which is provided so that it can be pivoted to and away from the rear cover and is urged by an elastic member in a direction away from the rear cover. Also, Japanese Patent Laid-Open No. 2001-231307 (Prior Art 2) states that “a farm working machine provided with a spring rake in which a large number of rake bodies are arranged at predetermined intervals in the width direction of the machine body behind the substitute rotor. In each of the rake bodies, each rake body has a resilience that bends upward alone when it comes into contact with foreign matter such as stones or straws in the cultivated soil. " Yes.

JP 2010-148422 A JP 2001-231307 A

  As the agricultural management system becomes larger, there is a demand for efficient work at high speed. In the case of scraping work, the mud in the field is crushed by the rotation of the tillage claws of the tilling rotor, and it is thrown into the ground leveling plate behind the tilling rotor in a mixed state of muddy water and rice straw, and is collided and crushed. Is done. The leveling board leveles the crushed mud horizontally, but at this time, the water, mud and impurities are separated, the impurities are embedded in the mud, the water floats on the surface, and the surface is soft. An ideal seedling planting field can be formed by making it into a mud. However, the higher the traveling speed, the more easily the impurities in the muddy water float, and the conventional rake structure has a problem that the embedding performance is not sufficient.

  Accordingly, an object of the present invention is to provide a scraping work machine having a good embedment performance of foreign matters even at a high speed operation and a good scraping performance even at a high speed operation.

In order to solve the above-described problem, the invention according to claim 1 includes a tilling rotor that is connected to a rear portion of the traveling machine and is driven by power transmitted from the traveling machine, and a tilling unit cover that covers an upper portion of the tilling rotor. A first leveling plate provided at the rear end portion in the traveling direction of the tillage portion cover so as to be rotatable in the vertical direction; and a first leveling plate provided at the rear end portion of the first leveling plate as being rotatable in the vertical direction. A leveling plate, and a plowing work machine for performing a tilling operation by traveling forward while rotating the tilling rotor,
A plurality of rake bodies are provided on the surface side of the first leveling board on the side of the tilling rotor with a predetermined interval in the left-right direction with respect to the traveling direction, and the rake bodies are arranged from the front to the rear of the first leveling board. extending a first rake, rather short than the first rake provided by positioned between said first ground leveling plate the first rake provided attached positioned rearward at intervals in the left-right direction The second rake is formed of a member having a diameter smaller than that of the first rake and being bent by its own elastic force. The first rake rotates coaxially with the vertical rotation center of the first leveling plate. A center is provided, and is rotatable to and away from the first leveling plate, and is biased by a pressure member in a direction away from the first leveling plate, and the pressure member is connected to the first rake plate. The end of the arm that protrudes to the upper surface side of the first leveling plate on the rear side of the rotating shaft The first ground leveling plate is provided between the first ground leveling plate and the biasing force adjusting plate protruding from the rear upper surface which is the outer surface opposite to the tilling rotor side, and the biasing force can be adjusted on the outer surface side. The rear end portion of the first rake and the second rake extends from the rear end portion of the first leveling plate to the rear side of the first grading plate, and proposes a scraping work machine characterized by the above.

Furthermore, the invention according to claim 2 is the first rake plate in a state where the first rake is rotated to the first leveling plate side and the rear end side is in contact with the first leveling plate. The scraping work machine according to claim 1, wherein the scraper working machine has a shape that bulges outward in a mountain shape so that a space portion is formed in an upper portion of the intermediate portion.

According to a third aspect of the present invention, the tilling rotor is a down-cut type that rotates from the front side to the rear side in the lower portion, and the tilling claw of the tilling rotor tills the mud repellent surface facing the rotation direction. The nail tip side has a mud repellent surface that is inclined from the front side to the rear side with respect to the normal direction of the rotation direction in a side view and is directed toward the center of rotation toward the space portion of the first leveling plate. 3. A plowing work machine according to claim 2, wherein mud is splashed up.

  According to the present invention, since the rake body rotates integrally with the rotation of the first leveling plate, it can be pushed in with a constant pushing force of impurities from the mud surface, so that the embedding performance is good. A leveling section can be constructed. The first rake extends from the front of the first leveling plate to the rear, and the second rake is mounted on the rear side of the first leveling plate and is shorter than the first rake provided between the first rakes. With the construction made, water, mud and foreign substances are separated to some extent on the front side of the first rake, and the foreign substances are guided into the mud, and the rear side cooperates with the second rake to prevent the foreign substances from escaping. Thus, since it embeds in the soil, it is possible to provide a scraping work machine having good burial performance. Furthermore, the mud which collided with the rake body and the space part of the first leveling board is formed in the mud soil by a structure in which the mud repelling surface is provided on the tip side of the tilling claw and the mud is splashed up toward the space part of the first leveling board. Water, soil, and impurities can be easily separated, and a good seedling planting field can be formed.

It is a left view of the working state of the scraping work machine of the Example of this invention. It is a left view of the leveling board part of the working state which the Example of this invention cross-sectioned. It is a left side view of the state where the 1st rake of the leveling board part of the working state which the example of the present invention sectioned turned turned up. It is the bottom view which showed the positional relationship of the 1st rake and the 2nd rake of this invention. It is the principal part side view which carried out the cross section for description of the tilling nail | claw of the tilling rotor of this invention.

  One embodiment will be described with reference to FIGS. FIG. 1 is a left side view of the working state of the scraper working machine according to the embodiment of the present invention. A three-point link mechanism, which is a lifting link, is provided at the rear part of the tractor 1, which is a traveling machine, and is connected to the mounting portion 8 at the front part of the frame 2 of the scraping work machine A, and the scraping work machine A is connected to be liftable. And driven by the power output from the tractor 1 side. In the description of this embodiment, the left side of FIG. 1 will be described as the front side in the traveling direction, and the right side will be described as the rear side.

  The mounting portion 8 is provided at the front center portion of the scraping work machine A, and includes a top link pin 81 in the upper center and a pair of lower link pins 80 located on the lower left and right sides of the top link 10 of the tractor side three-point link mechanism. The quick hitch frame 20 is connected to the lower link 11 respectively, and the top hitch frame 20 is provided at the front center of the front portion of the frame 2 and the top mast 21 is provided at the position of the front end of the lower left and right. The tractor 1 is mounted by engaging with a mating pin.

  An input case is provided at the center of the front mounting portion 8, and an input shaft protrudes forward. The input shaft is connected to the output shaft of the tractor 1 by the universal joint 12 and receives power from the tractor.

  The frame 2 that holds the whole is provided with a pipe frame that is formed of a round pipe integrally projecting from the input case to the left and right sides, and extends downward from the projecting ends of the pipe frames on the left and right sides. The vertical transmission case 5, the vertical support frame extending downward from the projecting end of the left and right pipe frame, and the input case of the pipe frame are located on the left and right of the pipe case and are parallel to the front The entire frame 2 is configured by the provided front plate, and the rotor shaft 60 in the left-right direction is rotatably supported between the lower end portion of the transmission case 5 and the lower end portion of the support frame.

  A large number of tilling claws 61 are attached to the rotor shaft 60 at regular intervals in the radial direction to constitute the tilling rotor 6. The upper part of the tilling rotor 6 is covered with a tilling part cover 7, which prevents the soil cultivated by the tilling rotor 6 from being scattered upward and assists the performance of crushed soil and leveling. A leveling plate 4 is provided at the rear portion of the tilling rotor 6, and the leveling plate 4 includes a first leveling plate 40 whose front end is connected to the rear end of the tilling unit cover 7 so as to be rotatable in the vertical direction, and a first leveling plate 40. It is comprised by the 2nd leveling board 41 provided in the rear-end part of the leveling board 40 so that rotation in the up-down direction was possible. The scattering of the soil cultivated by the cultivating rotor 6 is received and the leveling is performed by the leveling plate 4. The leveling pressure can be adjusted by a compression rod 46 laid across the leveling plate 4 and the frame 2 side.

  The power input from the input shaft of the input case is decelerated by the gear built in the input case, and is transmitted into the transmission case 5 by the output shaft passing through the pipe frame protruding from the left and right sides. An output sprocket is fixed to the end of the output shaft in the transmission case 5, and power is transmitted by a roller chain wound between the rotor shaft sprocket at the end of the rotor shaft 60 supported at the lower end of the transmission case 5. Then, the rotor shaft 60 is rotationally driven.

  A support portion of the rotor shaft 60 of the transmission case 5 is rotatably supported by a bearing and is lubricated by lubricating oil stored in the transmission case 5. An oil supply port is provided in the upper part of the transmission case 5, and the roller chain and the bearing are lubricated by the supplied lubricating oil.

  The support portion on the support frame side of the rotor shaft 60 is rotatably supported by a bearing held by the support frame via a bearing retainer attached to the support frame with bolts and nuts.

  FIG. 2 is a cross-sectional view of the left side of the working state of the tilling rotor 6 part and the leveling plate 4 part. In this example, the tilling rotor 6 rotates counterclockwise in the state of FIG. 2 so that the front side, which is the uncultivated land side, is down-cut. At the upper part of the tilling rotor 6, a tilling part cover 7 is provided so as to be separated along the rotation outer peripheral end of the tilling claw 61. The tillage part cover 7 covers the upper part of the tillage rotor 6. The rear end portion of the tillage unit cover 7 is provided with a first leveling plate vertical rotation center shaft 43 provided in a horizontal direction orthogonal to the traveling direction, and a first leveling plate 40 is attached to the front end portion thereof and the rear side thereof. It is positioned so that it can rotate up and down. Further, a second leveling plate 41 is connected to the rear end portion of the first leveling plate 40, and the second leveling plate 41 is provided in a horizontal direction orthogonal to the traveling direction provided at the rear end portion of the first leveling plate 40. Further, the front end portion is held by the second leveling plate vertical rotation center shaft 45, and the rear side is provided so as to freely rotate up and down.

  The first ground leveling plate 40 at the time of working is a slant inclined to the rear, receiving mud soil plowed by the tilling rotor 6 and splashed rearward by the tilling rotor 6 in a state inclined obliquely downward and rearward from the rear end of the tiller cover 7. The muddy soil raised by the tractor 1 is pressed with the progress of the tractor 1 to level the ground. The leveling pressure can be adjusted by means of a compression rod 46 that spans the upper surface of the first leveling plate 40 and the frame 2 side. The second leveling plate 41 at the time of the ground leveling work maintains the ground contact surface in a substantially horizontal state and further presses the leveled surface by the first leveling plate 40 to level the surface.

  A connecting portion cover 70 provided in a cantilevered manner from the tillage portion cover 7 toward the rear side is provided below the first leveling plate vertical rotation central shaft 43 at the rear end portion of the tillage portion cover 7. The connecting portion cover 70 is a plate-like elastic body that is long in the left-right direction, and guards so that the mud repelled by the tilling rotor 6 does not jump out of the connecting portion with the first leveling plate 40, Guide the mud back.

  A rake body 42 is provided on the surface of the first leveling plate 40 on the side of the tilling rotor 6. As shown in FIG. 4, the rake body 42 has a round bar shape, and a plurality of rake bodies 42 are provided at predetermined intervals in the left-right direction with respect to the traveling direction. A rake 420 and a second rake 421 that is attached to the first leveling plate 40 on the rear side of the first leveling plate 40 and shorter than the first rake 420 provided between the left and right directions of the first rake 420. It is configured.

  The front end of the first rake 420 is attached to the first leveling plate 40 with a rotation axis coaxially with the first leveling plate vertical rotation center axis 43 that is the rotation axis of the first leveling plate 40. On the other hand, the rotation end side can be freely contacted and separated by rotating the rear side. Further, an end portion of an arm 422 provided close to the rear side of the rotation axis of the first rake 420 and protruding from the first rake 420 to the upper surface side of the first leveling plate 40, and the first leveling plate A tension spring, which is the elastic member 44, is bridged between an urging force adjusting plate 403 provided so as to protrude from the upper surface of the rear side of 40, and the rear rotating end side of the first rake 420 has a first adjusting position. It is attached in a state of being biased in a direction away from the main plate 40. The urging force adjusting plate 403 has a plurality of holes for applying a tension spring, and the urging force can be adjusted by changing the holes. The adjustment of the urging force is not limited to the method of changing holes, but may be a method of pulling up with a bolt. Adjustment can be easily performed by providing the adjustment portion on the upper surface side of the first leveling plate 40.

  The second rake 421 is provided with a front portion attached to the rear portion of the first leveling plate 40, directed rearward, and protruding downward from the leveling surface of the first leveling plate 40. In this example, it is formed of a member having a diameter smaller than that of the first rake 420 and can be bent by its own elastic force.

  The rake body 42 is for pushing impurities such as rice straw in the mud cultivated and crushed by the tilling rotor 6 into the soil at the same time as leveling. It has become. By traveling forward, impurities caught on the front side are guided and embedded in the soil on the slope. Only the first rake 420 is provided on the front side, and the interval in the left-right direction is relatively wide. Since the second rake 421 is located on the rear side, the interval in the left-right direction is narrow. For this reason, the first rake 420 has a function of filtering out mud on the front side, separating it into water, soil and contaminants, and guiding the contaminants backward to prevent escape from the round bar rake. Can be pushed in narrow. In addition, the first rake 420 and the first leveling plate 40 are provided coaxially with the rotation axis centers of the first rake 420 and the first leveling plate 40 with an elastic member 44 that applies a biasing force to the first rake 420. Thus, even if the tilling depth changes and the angle of the first leveling plate 40 changes, the pushing pressure of the first rake 420 does not change.

  As shown in FIG. 3, the first leveling plate 40 is configured such that the first rake 420 rotates to the first leveling plate 40 side and the rear end side is in contact with the first leveling plate 40. It has a shape that bulges outward in a mountain shape so that a space 402 is formed in the upper part of the middle part from the front. As a result, the action of filtering out mud on the front side of the first rake 420 can be promoted.

  As shown in FIG. 5, the tilling claw 61 of the tilling rotor 6 has a curved or inclined planar shape as a whole. A base portion is attached to the rotor shaft 60 and is bent toward the rear side in the rotational direction, and an end portion on the rear side has a mud repellent surface 62 bent in the rotational axis direction of the rotor shaft 60. The mud repellent surface 62 is inclined from the front side toward the rear side with respect to the normal line 63 in the rotational direction in the side view, and the cultivated mud soil enters the space portion 402 of the first leveling board 40. It is set so that mud is repelled. The mud repellent lifting surface 62 has a flat portion facing the rotational direction, and is a flat surface having an inclination angle 64 shown in FIG. 5 from the front side toward the rear side. When the mud is repelled toward the space part 402 of the first leveling plate 40, it collides with the first rake 420 located in front of the space part 402, making it easy to separate the water, soil and foreign matter in the mud. Can be guided downward by the first rake 420 to form a field surface suitable for planting seedlings whose soil falls relatively quickly below moisture and has a soft surface.

  The rear ends of the first rake 420 and the second rake 421 are located rearward of the ground leveling of the first leveling plate rear end 401 and are positioned forward of the leveling of the second leveling plate 41. It has been. With this configuration, the foreign matter pushed into the soil by the rake body 42 is suppressed by the second leveling plate 41 before it rises, and the foreign matter can be reliably embedded.

  Next, in order to perform the tilling work using the rotary tiller of the present invention, the three-point link mechanism of the tractor which is a traveling machine is connected to the three-point link mechanism of the mounting portion 8 by the lower link pin 80 and the top link pin 81. The mechanism can be moved up and down by the mechanism. The tractor output shaft and the universal joint 12 are connected to the input shaft so that power can be input.

  When the rotator 6 is rotated by operating the tractor 1 and the three-point link mechanism is lowered in the alternative farming field, the soil is cultivated by the cultivating claws 61 of the cultivating rotor 6. When the tractor 1 is run in this state, it is possible to sequentially plow the field and perform the scraping work. Moreover, the leveling board 4 is located in the rear part of the tilling rotor 6, and work is performed while leveling the cultivated soil surface layer. A rake body 42 is positioned on the farm scene side of the ground leveling plate 4, and impurities are buried in the soil. The first leveling plate 40 and the first rake 420 have an action of separating the soil water and the soil and impurities which are cultivated and scattered by the tilling rotor 6, and are flat in the surface of the scraping work and the surface is optimal for seedling planting. You can build the surface.

  The present invention can be applied to a scraping work machine that is mounted behind a traveling machine such as a tractor and performs a scraping work performed before rice planting.

DESCRIPTION OF SYMBOLS 1 Tractor 10 Top link 11 Lower link 12 Universal joint 2 Frame 20 Quick hitch frame 21 Top mast 4 Leveling plate 40 1st leveling plate 401 1st leveling plate rear end part 402 Space part 403 Biasing force adjustment plate 41 2nd leveling plate 42 Rake body 420 1st rake 421 2nd rake 422 Arm 43 1st leveling plate vertical rotation central axis 44 Resilient member 45 2nd leveling plate vertical rotation central axis 46 Compression rod 5 Transmission case 6 Tilling rotor 60 Rotor shaft 61 Claw claw 62 Mud soil repellent surface 63 Normal 64 Inclination angle 7 Tillage part cover 70 Connection part cover 8 Attachment part 80 Lower link pin 81 Top link pin

Claims (3)

A tilling rotor connected to the rear of the traveling machine and driven by power transmitted from the traveling machine;
A tiller cover that covers the top of the tillage rotor;
A first leveling plate provided at the rear end portion in the traveling direction of the tillage portion cover so as to be rotatable in the vertical direction;
A second leveling plate provided at the rear end of the first leveling plate so as to be rotatable in the vertical direction;
In the alternative working machine that performs the tilling work by traveling forward while rotating the tilling rotor,
A plurality of rake bodies are provided at predetermined intervals in the left-right direction with respect to the traveling direction on the surface side of the first ground leveling plate on the side of the tilling rotor,
The distance between the rake bodies in the left-right direction is such that the front side is wide and the back side is narrow,
The rake body includes a first rake extending rearward from the front of the first leveling plate,
From tanks and the first rake than the first rake provided by positioning between said first rake that is provided at intervals in the left-right direction is attached is located on the first ground leveling plate rear side Consists of a second rake formed of a member having a small diameter and being bent by its own elastic force ,
The first rake is provided with a rotation center coaxially with a vertical rotation center of the first leveling plate, and is capable of rotating to and away from the first leveling plate, and the first leveling plate. Is urged by the pressure member in the direction away from
The elastic member includes an end of an arm projecting to the upper surface side of the first leveling plate on the rear side of the rotation axis of the first rake, and an outer surface on the opposite side of the first leveling plate to the tilling rotor side. It is possible to adjust the urging force on the outer surface side while providing it between the urging force adjustment plate protruding on the rear upper surface,
The rear working portion of the first rake and the second rake is extended to the rear side with the rear end portion of the first leveling plate . The first leveling plate is formed with a space at an upper portion of the first rake intermediate portion in a state where the first rake is rotated toward the first leveling plate and the rear end side is in contact with the first leveling plate. The scraping work machine according to claim 1, which has a shape that bulges outward in a mountain shape. The tilling rotor is a down cut method that rotates from the front side to the rear side in the lower part, and the tilling claw of the tilling rotor has a mud lifting surface facing the rotation direction on the tip of the tilling nail, The surface is inclined from the front side to the rear side with respect to the normal to the rotation direction in a side view, and the mud is splashed toward the space portion of the first leveling plate. The scraping work machine according to claim 2 .

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