JP4344290B2 - Agricultural machine - Google Patents

Description

  The present invention relates to an agricultural machine that can reduce noise.

A conventional agricultural machine, for example, is provided with a work machine main body and the work machine main body so as to be rotatable, and is turned into a deployment work state by turning in one direction, and is in a non-folding work state by turning in the other direction. The working body includes left and right working units, and each working unit performs a leveling work, a first leveling body that performs leveling work, and a first leveling body that is pivotable up and down. The second leveling body and a contact support body that supports the second leveling body from the middle of the folding operation and restricts the downward rotation of the second leveling body (for example, , See Patent Document 1).
JP 2003-111503 A

  However, in the above conventional farm work machine, for example, when the work part is rotated with respect to the work machine body part or when the farm work machine is transported with the work part folded, the first leveling body and the second leveling body are provided. Noise may occur due to fluttering.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can aim at silencing.

The agricultural machine according to claim 1 is provided with a work machine main body part, and the work machine main body part is provided so as to be rotatable, and is turned into an unfolded working state by turning in one direction, and is not folded by working in the other direction. A working unit that performs tilling work, a first leveling body that performs leveling work, and a first leveling body that can be rotated up and down. And a leveling body locking means for locking both the first leveling body and the second leveling body in a soiling posture, and the leveling body locking means includes the first leveling body locking means. A stopper body provided on the leveling body and having a contact receiving portion, an arm body provided on the second leveling body and having an engagement pin portion, and the first ground leveling in contact with the contact receiving portion. The second leveling body engaged with the contact portion for locking the body in the earthing posture and the engagement pin portion Those having a rotation lock member having an engaging recess to lock the soil pull position.

Since both the first leveling body and the second leveling body can be locked in the earthing posture by the leveling body locking means, noise reduction can be achieved when folding is not performed. Further, it is possible to appropriately lock both the first leveling body and the second leveling body with the leveling body locking means having the arm body, the stopper body and the rotation lock body.

The agricultural machine according to claim 2 is provided with a work machine main body and the work machine main body so that the work machine main body can be rotated, and is unfolded by turning in one direction and unfolding by turning in the other direction. A working body having a tillage cover portion, a tiller body rotatably provided on the body and performing a tilling work while rotating, and a rear end portion of the tillage cover portion. A first leveling body that is provided via an elastic plate and performs leveling work, a second leveling body that is provided on the first leveling body so as to be rotatable up and down and performs leveling work, and the first leveling body. A leveling body locking unit that locks both the leveling body and the second leveling body in a earthing posture, and the leveling body locking unit is provided on the first leveling body and has a contact receiving portion. And an arm body provided on the second leveling body and having an engagement pin portion The second leveling body is locked in the earthing position by engaging with the abutting part that contacts the contact receiving part and locks the first leveling body in the earthing position and the engagement pin part. And a rotation lock body having an engaging recess .

Since both the first leveling body and the second leveling body can be locked in the earthing posture by the leveling body locking means, noise reduction can be achieved when folding is not performed. In particular, it is possible to appropriately suppress the generation of noise by preventing flapping of the first leveling body and the second leveling body based on the elastic deformation of the elastic plate. Further, it is possible to appropriately lock both the first leveling body and the second leveling body with the leveling body locking means having the arm body, the stopper body and the rotation lock body.

According to the first aspect of the present invention, since both the first leveling body and the second leveling body can be locked in the earthing posture by the leveling body locking means, the noise can be reduced when the folding is not performed. Can do. Moreover, both the 1st leveling body and the 2nd leveling body can be appropriately locked by the leveling body locking means which has an arm body, a stopper body, and a rotation lock body.

According to the invention according to claim 2, since both the first leveling body and the second leveling body can be locked in the earthing posture by the leveling body locking means, it is possible to reduce the noise when the folding is not performed. In particular, the occurrence of noise can be appropriately suppressed by preventing the first leveling body and the second leveling body from fluttering based on the elastic deformation of the elastic plate. Moreover, both the 1st leveling body and the 2nd leveling body can be appropriately locked by the leveling body locking means which has an arm body, a stopper body, and a rotation lock body.

  An embodiment of an agricultural machine according to the present invention will be described with reference to the drawings.

  1 and 2, reference numeral 1 denotes a foldable agricultural machine. The agricultural machine 1 is connected to, for example, a tractor (not shown) which is a traveling vehicle and moves forward in a field such as a paddy field by the traveling of the tractor. It is a folding type scraper that performs scraping work (cultivation leveling work) and earthing work.

  The farm work machine 1 includes a central work part 2 that is a work machine body part that is slightly elongated in the left-right direction, and a folding shaft (folding rotation center axis) 3 in a substantially front-rear direction at both left and right ends of the central work part 2. Is provided so as to be pivotable in the vertical direction, and is unfolded by turning in one direction around the folding shaft 3, and turning in the other direction around the folding shaft 3. And an extended working section 4 that is a pair of left and right working sections that are in a non-folding working state.

  The central working unit 2 includes a vehicle body 6 connected to a tractor. The vehicle body 6 has a three-point connection portion 7, and the three-point connection portion 7 is connected to a three-point link portion (not shown) at the rear of the tractor. Connected. The machine body 6 has an input shaft holding portion 8 such as a gear box, and the input shaft 9 is rotatably provided on the input shaft holding portion 8. The input shaft 9 is connected to the PTO shaft of the tractor via a transmission shaft or the like.

  The machine body 6 is rotatably provided with a rotary-type tillage body (center rotary) 11 that receives power from the input shaft 9 side and performs a tilling work while rotating in a predetermined direction. The cultivating body 11 is composed of a rotating shaft in the left-right direction and a cultivating claw provided on the rotating shaft. Further, the upper part of the cultivating body 11 is covered with a cultivating cover part (center cover) 12 that is slightly elongated in the left-right direction and has a substantially plate shape.

  In addition, the rear end portion of the tiller cover portion 12 of the airframe 6 is in a scraping posture (a scraping-free state) that can be rotated during the scraping operation, and performs leveling work while rotating up and down mainly about the left and right axis 14. A substantially plate-shaped first leveling body (center flat plate) 15 is provided via an elastic plate (center rubber cover) 16 that can be elastically deformed. The shaft 14 serving as the rotation center of the first leveling body 15 is hooked inside the concave portion 17 of the machine body 6 and is rotatably supported by the concave portion 17. Further, at the rear end portion of the first leveling body 15, the scraping posture (rotation-free state) that can be rotated close to the horizontal posture at the time of scraping work is turned up and down around the horizontal axis 18. A substantially plate-like second leveling body (center rake plate) 19 for leveling work is provided.

  The front end portion of the elastic plate 16 located between the tilling cover portion 12 and the first leveling body 15 is attached to the rear end portion of the tilling cover portion 12 of the machine body 6 with a fixture (bolt and nut) 20 and elastic. The rear end portion of the plate 16 is attached to the front end portion of the first leveling body 15 with a fixture (bolt and nut) 21.

  On the other hand, the central working unit 2 includes a lock unit 23 that locks the second leveling body 19 in the inclined earthing position (the earthing locked state) with respect to the machine body 6 during earthing work. The locking means 23 has a first rotating arm 24, and a lower end portion of the first rotating arm 24 is rotatably attached to a predetermined portion of the second leveling body 19 via a left / right shaft 25. It has been. A rear end portion of the second rotation arm 26 is rotatably attached to the upper end portion of the first rotation arm 24 via a shaft 27 in the left-right direction, and the front end portion of the second rotation arm 26 is an airframe. 6 is attached to a predetermined part of the motor case portion 28 via a left and right shaft (not shown) so as to be rotatable.

  In addition, the fitting convex part 29 which is one fitting part protrudes in the right-and-left both ends of the 1st leveling body 15, and the right-and-left both ends of the 2nd leveling body 19. Further, on the upper surface portion in the vicinity of the left and right end portions of the tillage cover portion 12 of the airframe 6, a lowering convex portion 30 that is an auxiliary support portion protruding upward is projected.

  On the other hand, the pair of left and right extension work sections 4 are symmetrical, and each extension work section 4 includes a machine body 41 that rotates in the vertical direction about a folding shaft 3 in a substantially front-rear direction.

  This machine body 41 includes a rotary type tiller (side) that receives power from the tillage body 11 side of the central work section 2 and rotates in a predetermined direction while working with the tillage body 11 when the extension work section 4 is deployed. (Rotary) 42 is rotatably provided. This cultivating body 42 is constituted by a rotation shaft in the left-right direction and a cultivating claw provided on the rotation shaft, as with the cultivating body 11 of the central working unit 2. Further, the upper portion of the cultivating body 42 is covered with a cultivating cover portion (side cover) 43 that is slightly longitudinal in the left-right direction and has a substantially plate shape.

  In addition, the rear end portion of the tillage cover portion 43 of the machine body 41 has a scraping posture that can be rotated during the scraping operation (a scraping-free state), and performs leveling work while rotating up and down mainly about the left and right axis 44. A substantially plate-shaped first leveling body (side flat plate) 45 is provided via an elastic plate (side rubber cover) 46 that can be elastically deformed. The shaft 44 serving as the rotation center of the first ground leveling body 45 is hooked inside the concave portion 47 of the machine body 41 and is rotatably supported by the concave portion 47. Further, at the rear end portion of the first leveling body 45, a scraping posture (rotation-free state) that can be rotated close to a horizontal posture at the time of scraping work is performed while rotating up and down around the left and right axis 48. A substantially plate-like second leveling body (side rake plate) 49 that performs leveling work is provided.

  The front end portion of the elastic plate 46 located between the tilling cover portion 43 and the first ground leveling body 45 is attached to the rear end portion of the tilling cover portion 43 of the machine body 41 with a fixture (bolt and nut) 50, and is elastic. The rear end portion of the plate 46 is attached to the front end portion of the first leveling body 45 with a fixture (bolt and nut) 51.

  On the other hand, each extension working unit 4 simultaneously locks both the first leveling body 45 and the second leveling body 49 to the body 41 during the earthing work in the inclined earthing position (the earthing lock state). Leveling body locking means 53 is provided. The first leveling body 45 and the second leveling body 49 are locked in the earthing posture positioned on substantially the same plane by the leveling body locking means 53, and the extension working parts 4 are folded. It can be switched to a folding non-working state by turning around the service shaft 3.

  Here, as shown in FIGS. 3 to 5, the leveling body locking means 53 includes a stopper body (level plate locking body) 57 provided on the upper surface side of the first leveling body 45 and having a contact receiving portion 56. An arm body 55 which is provided on the upper surface side of the second leveling body 49 and has an engaging pin part 54 and is located between the second leveling body 49 and the machine body 41, and a contact receiving part by rotating to the lock position The abutment portion 62 that abuts 56 and locks the first leveling body 45 in the earthing position and the engaging pin portion 54 engages by the rotation to the lock position and the second leveling body 49 is in the earthing position. And a rotation lock body (lock cam) 63 having an engaging recess 61 for locking to the lock.

  The arm body 55 for locking the second leveling body 49 that performs earthing work to the earthing position has a first rotating arm (rake arm) 66, and the lower end portion of the first rotating arm 66 is the first one. The second leveling body 49 is attached to a predetermined portion via a left and right shaft 67 so as to be rotatable. A rear end portion of a second rotation arm (lock arm) 68 is attached to an upper end portion of the first rotation arm 66 so as to be rotatable through a left and right axis 69. A front end portion is rotatably attached to a predetermined portion of the bracket portion 70 of the body 41 via a left and right shaft 71. An intermediate pin portion 54 of the second rotating arm 68 is provided with a left and right engaging pin portion 54 that protrudes laterally from the side surface of the second rotating arm 68.

  The stopper body 57 for locking the first leveling body 45 to the earthing posture has a pair of left and right opposing plate parts 73 fixed to the upper surface part of the first leveling body 45, The upper end portions are integrally connected by a left and right bar-like portion 74, and the bar-like portion 74 serves as a contact receiving portion 56.

  The rotation lock body 63 is rotatably attached to a predetermined portion of the bracket portion 70 of the machine body 41 via a horizontal shaft 75. That is, the rotation lock body 63 rotates to the machine body 41 so as to rotate between the lock position and the lock release position by the movement of the operating arm 77 based on the drive of a motor (not shown) housed in the motor box 76. It is provided to be movable.

  The rotation lock body 63 has a protruding contact portion 62 that contacts the contact receiving portion 56 by rotation to the lock position and locks the first leveling body 45 in the earthing position at the lower portion. In addition, it has a substantially L-shaped engagement recess 61 that engages with the engagement pin portion 54 by rotating to the lock position and locks the second leveling body 49 in the earthing position.

  A gas spring 81 is provided between the first rotating arm 66 and the bracket portion 70 of the arm body 55, and the ground pressure of the second leveling body 49 during the scraping operation can be adjusted by the gas spring 81. ing. On the other hand, the left and right end portions of the first leveling body 45 and the left and right end portions of the second leveling body 49 are fitted to the fitting convex portions 29 of the central working portion 2 when the extension working portion 4 is unfolded. A fitting recess 82 is provided. Then, the leveling bodies 15 and 19 of the central working unit 2 and the leveling bodies 45 and 49 of the extension working unit 4 are integrated with each other by mating with the fitting convex part 29 and the fitting concave part 82. do.

  Next, the operation of the above embodiment will be described.

  When performing the earthing work with the maximum working width using the agricultural working machine 1, the second leveling body 19 is set by the locking means 23 of the central working part 2 with the left and right extension working parts 4 set to the unfolded working state. Is locked to the earthing posture with respect to the airframe 6, and both the first leveling body 45 and the second leveling body 49 are earthed against the airframe 41 by the leveling body locking means 53 of the extension working unit 4. Lock to.

  3 and 5, when the operating arm 77 is moved in a predetermined direction by moving the motor in the motor box 76, the rotation lock body 63 rotates from the unlock position to the lock position about the shaft 75. When the rotation lock body 63 is rotated, the contact portion 62 of the rotation lock body 63 comes into contact with the contact receiving portion 56 of the stopper body 57, and at the same time, the arm is placed in the engagement recess 61 of the rotation lock body 63. The engagement pin portion 54 of the body 55 enters and the engagement recess 61 and the engagement pin portion 54 engage with each other.

  Then, the first leveling body 45 is locked in the earthing posture by the contact between the contact part 62 and the contact receiving part 56, and the second leveling is performed by the engagement between the engagement recess 61 and the engagement pin part 54. The body 49 is locked in the earthing posture, and as a result, both the first leveling body 45 and the second leveling body 49 are fixed to the bracket part 70 of the body 41.

  When the farm work machine 1 in the state of earthing work is moved by the forward traveling of the tractor, the second ground leveling body 19 in the earthing attitude of the central working part 2 and the second earthing attitude of the extension work part 4 are mainly used. The soil leveling work is performed by the leveling body 49, and the field becomes substantially flat.

  Also, by setting only one of the left and right extension work sections 4 to the unfolding work state, or by setting both the left and right extension work sections 4 to the unfolding work state, the work width can be adjusted according to the work situation.

  For example, as shown in FIG. 2, when the extension working unit 4 is rotated by about 180 degrees about the folding shaft 3 and folded so as to overlap the central working unit 2, For example, a hydraulic cylinder device 85 as a driving means is operated while both the ground leveling body 45 and the second leveling body 49 are locked in the earthing posture with respect to the machine body 41.

  At this time, since the first leveling body 45 and the second leveling body 49 rotate around the folding shaft 3 while being locked in the earthing posture, they do not rotate downward due to their own weight. There is no flapping. Moreover, even if the agricultural work machine 1 is transported to a desired position in a state in which the extension working unit 4 is folded and set to the non-folding state, the first leveling body 45 and the second leveling body 49 flutter during the transporting. There is no such thing.

  As is clear from FIG. 2, when the extended working unit 4 is not in the folded state, the second rotating arm 68 of the arm body 55 is moved downward from the lowering projection 30 of the body 6 of the central working unit 2. The load applied to the folding shaft 3 during transportation of the agricultural machine 1 is reduced by the support by the lowering projections 30.

  In addition, when performing the scraping work with the maximum working width after the earthing work is completed, the lock by the locking means 23 of the central working part 2 is released and extended with the left and right extending working parts 4 set in the unfolded working state. The lock by the leveling body locking means 53 of the working unit 4 is released, and the first leveling body 15 and the second leveling body 19 of the central working unit 2 are set to the scraping posture, and the first leveling body of the extension working unit 4 is used. 45 and the 2nd leveling body 49 are made into a scraping posture.

  Then, when the farm work machine 1 in such a scraping work state is moved by the forward travel of the tractor, the tilling work is performed by the tilling body 11 of the central working part 2 and the tilling body 42 of the extension working part 4, and the central work is performed. The leveling work is performed by the two leveling bodies 15 and 19 in the alternative scraping posture of the part 2 and the two leveling bodies 45 and 49 in the alternative scratching position of the extension work unit 4.

  During such scraping work, the elastic plates 16 and 46 are deformed, the first leveling bodies 15 and 45 are rotated up and down around the axes 14 and 44, depending on the state of the field, etc. The two leveling bodies 19, 49 rotate up and down around the axes 18, 48.

  In the case of scraping work, only one of the left and right extension work sections 4 is set in the unfolding work state, or both the left and right extension work sections 4 are set in the unfolding work state, so that the work can be performed according to the work situation. The width can be adjusted.

  And according to the agricultural working machine 1 of the said one embodiment, both the 1st leveling body 45 and the 2nd leveling body 49 are body 41 by the leveling body locking means 53 of the extension work part 4 which can be folded right and left. The earthing posture can be locked with respect to the central working unit 2, so that the first working unit 4 is rotated when the extension working unit 4 is rotated or when the agricultural working machine 1 is transported in a state in which the extending working unit 4 is folded. Fluttering of the second leveling body 45 and the second leveling body 49 can be prevented, and thus noise reduction can be achieved.

  In particular, at the time of transporting the agricultural working machine 1 with the extended working part 4 folded, by preventing the flapping of the first leveling body 45 and the second leveling body 49 based on the elastic deformation of the elastic plate 46, Generation of noise can be suppressed appropriately, and noise reduction can be achieved.

  The agricultural machine 1 is not limited to the configuration in which the first leveling body 45 is provided at the rear end portion of the tillage cover portion 43 of the machine body 41 via the elastic plate 46. The structure etc. which attached the front-end part (upper end part) of the 1st leveling body 45 to the rear-end part of 41 tillage cover parts 43 via the axis | shaft of the left-right direction may be sufficient.

  Moreover, it is not limited to the structure provided with the center work part 2 which is a working machine main-body part which can perform farming work, such as a scraping work and earthing work, For example, in a working machine main-body part, it is divided into 2 or 3 Divided agricultural machines may be used.

It is a side view which shows one Embodiment of the agricultural machine of this invention. It is a rear view of a farm work machine same as the above. It is a side view of the locked state (soil pulling attitude | position) of the leveling body of an agricultural working machine same as the above. It is a side view of the free state (scratching posture) of the leveling body of the agricultural working machine same as the above. It is operation | movement explanatory drawing of the rotation lock body of an agricultural working machine same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Agricultural working machine 2 Central working part which is working machine main part 4 Extension working part which is working part
41 Aircraft
42 Tillage
43 Tillage cover
45 First leveling body
46 Elastic plate
49 Second leveling body
53 Leveling body locking means
54 Engagement pin
55 Arm body
56 Contact receiving part
57 Stopper body
61 Engaging recess
62 Contact part
63 Rotation lock body

Claims (2)

A work machine main body, and a work unit that is rotatably provided in the work machine main body and is in a deployment work state by turning in one direction and in a non-folding work state by turning in the other direction,
The working unit is
A plowing body for plowing work,
A first leveling body that performs leveling work;
A second leveling body which is provided on the first leveling body so as to be rotatable up and down and performs leveling work;
A leveling body locking means for locking both the first leveling body and the second leveling body to the earthing posture ;
The leveling body locking means includes:
A stopper body provided on the first leveling body and having a contact receiving portion;
An arm body provided on the second leveling body and having an engagement pin portion;
A contact portion that contacts the contact receiving portion and locks the first leveling body in the earthing posture, and a mechanism that engages the engagement pin portion and locks the second leveling body in the earthing posture. A farm working machine comprising a rotation lock body having a joint recess . A work machine main body, and a work unit that is rotatably provided in the work machine main body and is in a deployment work state by turning in one direction and in a non-folding work state by turning in the other direction,
The working unit is
An airframe having a tillage cover,
A plowing body that is rotatably provided in this machine body and performs a plowing work while rotating,
A first leveling body which is provided via an elastic plate at the rear end of the tillage cover part and performs leveling work;
A second leveling body which is provided on the first leveling body so as to be rotatable up and down and performs leveling work;
A leveling body locking means for locking both the first leveling body and the second leveling body to the earthing posture ;
The leveling body locking means includes:
A stopper body provided on the first leveling body and having a contact receiving portion;
An arm body provided on the second leveling body and having an engagement pin portion;
A contact portion that contacts the contact receiving portion and locks the first leveling body in the earthing posture, and a mechanism that engages the engagement pin portion and locks the second leveling body in the earthing posture. A farm working machine comprising a rotation lock body having a joint recess .

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