JP4881136B2 - Agricultural machine - Google Patents

Description

  The present invention does not require back travel of the traveling vehicle, can efficiently perform the haze coating work that is an offset work, and the length of the unworked portion at the corner of the field is short, and the burden of manpower work on the unworked portion is reduced. The present invention relates to an agricultural machine that can be reduced.

Conventionally, for example, a pretreatment body (banking body) equipped with a tilling rotor mounted on the rear part of a tractor that is a traveling machine body, receiving power from the tractor, and cultivating a part of the main fence and the field to raise it into a bowl shape; There is provided a drum-shaped trimming body (crown-forming body) that is formed into straw while rotating the soil cultivated by the pretreatment body, and the pretreatment body and the trimming body are supported by one frame structure, and one A wrinkle coater configured to transmit power from the transmission frame to the pretreatment body and the trimming body, wherein the pretreatment body and the trimming body can be adjusted in a horizontal direction with the transmission frame as a rotation center, and 2. Description of the Related Art A plastering machine is known in which a base side of a transmission frame is supported so that a horizontal offset amount can be adjusted via a parallel link with respect to a main body side frame (see, for example, Patent Document 1).
JP 2003-199405 A

  However, in the above-described conventional paddy coater, the forward traveling of the tractor and the drive rotation of the pretreatment body and the trimming body are stopped at the corners of the field, the electric cylinder is extended, and the pretreatment body and the trimming body are moved 180 degrees. After the rotation, the driving rotation of the pretreatment body and the trimming body must be restarted to cause the tractor to travel backward, and therefore there is a possibility that an offset operation (such as a haze coating operation) cannot be performed efficiently. .

  The present invention has been made in view of the above points, and does not require back travel of the traveling vehicle, and can efficiently perform the filling operation that is an offset operation, and the length of the unworked portion at the corner of the field. An object of the present invention is to provide an agricultural machine that is short and can reduce the burden of manual work on unworked parts.

請 Motomeko 1 agricultural machine according is coupled to the rear of the vehicle, a working machine body to the furrow coating operations is an offset work in the working unit while being moved by the forward travel of the vehicle, the working machine body A rotation drive unit configured to rotate with respect to the traveling vehicle; and a lock unit that restricts rotation of the work machine body with respect to the traveling vehicle. In the case of turning toward one of the two directions, the working portion is rotated so as to draw a working arcuate locus whose curvature radius is smaller than the radius of curvature of the non-operating arcuate locus when the turning driving means is not actuated. An agricultural working machine that moves in the vicinity of an angular position at a corner of a farm field in an arc shape based on an operation of a driving unit, wherein the working machine body is connected to a rear part of the traveling vehicle, and a fixed machine frame Moveable relative to the machine frame A movable machine frame, the working unit provided on the movable machine frame and configured by a banking body and a ridge forming body, an offset cylinder for moving the movable machine frame with respect to the fixed machine frame, and the rotation Drive means and control means for controlling the offset cylinder, and when the traveling vehicle turns forward while traveling forward at the corner of the field where one ridge and the other ridge intersect at a right angle at the angular position, The working unit controls the rotation driving unit and the offset cylinder by the control unit, and operates the vicinity of the angular position of the corner of the field based on the operation of the rotation driving unit and the offset cylinder. It moves in an arc shape so as to draw an arc-shaped locus, and when the traveling vehicle turns forward, the offset cylinder gradually expands, and the ridge forming body of the working unit intersects the heel at an angle of about 45 °. When the offset cylinder is positioned on the line, the offset cylinder is in the most extended state, and then the offset cylinder is gradually contracted, and the lock means is engaged in the lock pin and the lock pin in the up and down direction. having a rotatable locking hook, wherein in the state in which elastic means are contracted a rotary drive means, and the locking hook and the locking pin is engaged with each other, the work with respect to the vehicle by the engagement When the rotation of the machine main body is restricted and the telescopic means is extended, the lock hook is rotated upward, the engagement between the lock hook and the lock pin is released, and the work machine main body with respect to the traveling vehicle Is allowed to rotate.

  According to the present invention, the traveling vehicle does not need to travel in the back, and can effectively perform the haze-coating operation that is an offset operation, and the length of the unworked portion at the corner of the field is short, and the manpower work on the unworked portion The burden can be reduced.

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

  1 to 4, reference numeral 1 denotes an agricultural machine. This agricultural machine 1 is connected to the rear part of the tractor 2 which is a traveling vehicle and is moved by the forward traveling of the tractor 2 while being offset by the working part 5. A work machine main body 3 that performs a certain smearing work, and an expansion / contraction means 4 that is a rotation drive means that rotates the work machine main body 3 about the rotation center axis (rotation fulcrum) X in the vertical direction with respect to the tractor 2. And.

  As shown in FIGS. 7 and 8, the tractor 2 is located at the corner of the field where one linear ridge a and the other linear ridge b intersect at a right angle at the angular position (crossing position) P. A non-actuated arcuate trajectory when the radius of curvature does not extend / contract the expansion / contraction means 4 when turning forward, for example, to the left, while traveling forward so as to draw a tractor line C as an arcuate trajectory. The work unit 5 of the work implement body 3 is based on the expansion / contraction operation of the expansion / contraction means 4 so as to draw an expansion / contraction arc-shaped trajectory A that is an operation arc-shaped trajectory smaller than the radius of curvature of a certain non-extension / contraction arc-shaped trajectory B. The vicinity of the corner position P is moved in an arc shape.

  The telescopic arc-shaped trajectory (actuating arc-shaped trajectory) A is a work when the tractor 2 turns while moving forward so as to draw the tractor line C at the corner of the field, and when the telescopic means 4 is expanded and contracted. This is a locus (offset disc line) of the unit 5. A non-expandable arcuate trajectory (non-actuated arcuate trajectory) B is a case where the tractor 2 turns while traveling forward so as to draw the same tractor line C at the corner of the field and the telescopic means 4 is not expanded or contracted. Is the locus (normal disk line) of the working unit 5 in FIG. The length of the unworked portion when the working unit 5 moves on the telescopic arcuate locus A is L1, and the length of the unworked portion when the working unit 5 moves on the non-stretchable arcuate locus B is L2. It is short and requires less manual labor for unworked parts at the corners of the field.

  The tractor 2 has a tractor body 11 as a main body, front wheels 12 are provided on both left and right sides of the front portion of the tractor body 11, and rear wheels 13 are provided on both left and right sides of the rear portion of the tractor body 11. At the rear part of the tractor body 11, a three-point link hitch part (worker lifting support device) 14 is provided. The three-point link hitch portion 14 has one top link 15 and two left and right lower links 16.

  A coupler (quick coupler) 21 for facilitating the connection work of the work implement body 3 to the tractor 2 is mounted on the three-point link hitch portion 14 at the rear of the tractor 2. As shown in FIGS. 4 to 6, the coupler 21 has an upper engaging hook portion 23 that is one upper engaging portion and a lower engaging hook portion 24 that is two left and right lower engaging portions. Yes. The lower engagement hook portion 24 is attached to the hook attachment plate portion 25 so as to be rotatable about the shaft portion 26. The lower engagement hook portion 24 rotates between the engagement position and the engagement release position about the shaft portion 26 by the operation of the operation lever portion 27.

  The work machine body 3 has a fixed machine frame 31 connected to the three-point link hitch part 14 at the rear part of the tractor 2 via a coupler 21 and can be adjusted to the left and right positions via a parallel link 33 (offset adjustment). The movable machine frame 32 provided in the movable machine frame 32, the working unit 5 provided in the movable machine frame 32, and the offset cylinder 10 serving as an offset expansion / contraction means for rotating the parallel link 33 with respect to the fixed machine frame 31. is doing.

  The front end portion of the parallel link 33 is rotatably connected to the link connecting portion 34 of the fixed machine frame 31 via a vertical shaft 35, and the rear end portion of the parallel link 33 is connected to the link connecting portion 36 of the movable machine frame 32. It is connected via a vertical shaft 37 so as to be rotatable. The offset cylinder 10 is composed of, for example, an electro-hydraulic cylinder and has a cylinder portion 38 and a rod portion 39 that enters and exits the cylinder portion 38.

  The fixed machine frame 31 has a shaft holding portion 41, and an input shaft 42 in the front-rear direction is rotatably provided on the shaft holding portion 41. The input shaft 42 is connected to the PTO shaft of the tractor 2, such as a transmission shaft and a universal joint. Connected through.

  The fixed machine frame 31 has a tractor connecting portion 43 which is a connecting portion connected to the three-point link hitch portion 14 at the rear portion of the tractor 2 via a coupler 21. The tractor connecting portion 43 is engaged with a central top mast 44 having a top pin 45 that is removably engaged with the upper engaging hook portion 23 of the coupler 21 and a lower engaging hook portion 24 of the coupler 21. A lower pin 46 that is detachably engaged has two left and right lower arms 47 attached to the tip. Further, one of the two lower arms 47, for example, the right lower arm 47, is provided with expansion / contraction means (rotating cylinder or the like) 4.

  The expansion / contraction means 4 is composed of, for example, an electro-hydraulic cylinder, and has a cylinder part 51 and a rod part 52 that goes in and out of the cylinder part 51. As shown in FIGS. 5 and 6, the base end portion of the cylinder portion 51 is attached to a pin member 54 fixed to the first plate portion 53 of the lower arm 47, and the distal end portion of the rod portion 52 is the second plate of the lower arm 47. The movable pin member 57 is inserted into the long hole 56 of the portion 55 so as to be slidable in the front-rear direction along the long hole 56. That is, one end side of the expansion / contraction means 4 is attached to the first plate portion 53 which is a rear attachment portion of the lower arm 47, and the other end side of the expansion / contraction means 4 is attached to the second plate portion 55 which is a front attachment portion of the lower arm 47. The expansion / contraction means 4 is provided between the first plate portion 53 and the second plate portion 55.

  The first plate portion 53 and the second plate portion 55 are connected by the expansion / contraction means 4 and are connected by a third plate portion (slide plate) 58 that is long in the front-rear direction. A longitudinal long hole 59 is formed in the longitudinal direction on the rear end side of the third plate portion 58, and a lock pin 60 protruding from the first plate portion 53 in the long hole 59 extends in the longitudinal direction along the long hole 59. Is slidably inserted.

  A locking hook 61 that is detachably engaged with the lock pin 60 is provided at substantially the center in the longitudinal direction of the third plate portion 58 so as to be pivotable in the vertical direction about the horizontal axis 62. The locking hook 61 and the movable pin member 57 are connected by a connecting means 63 such as a wire. As shown in FIG. 5, when the expansion / contraction means 4 is contracted, the locking hook 61 and the lock pin 60 are engaged with each other, and this engagement causes the rotation center axis X of the work implement body 3 to the tractor 2. Rotation around the center is restricted. As shown in FIG. 6, when the expansion / contraction means 4 is extended, the lock hook 61 is pulled by the connecting means 63 and rotated upward, and the engagement between the lock hook 61 and the lock pin 60 is automatically performed. The rotation is released and the rotation about the rotation center axis X of the work implement body 3 with respect to the tractor 2 is allowed. When the movable pin member 57 on the distal end side of the rod portion 52 of the expansion / contraction means 4 moves in the long hole 56 from one end side to the other end side of the long hole 56, the lock hook 61 and the lock pin 60 are engaged. Is released.

  When the telescopic means 4 is contracted by the locking hook 61, the lock pin 60, the connecting means 63, etc., the telescopic means 4 is retracted from the unlocked state to the locked state by the contracting operation of the telescopic means 4. Locking means 65 that restricts the rotation and allows the work implement main body 3 to turn relative to the tractor 2 when the extension means 4 is extended and the extension operation of the extension means 4 changes the locked state to the unlocked state. . Although not shown, control means for controlling the cylinders 4 and 10 is electrically connected to the offset cylinder 10 and the expansion / contraction means (rotating cylinder) 4.

  The movable machine frame 32 includes a first chain case portion 71, a second chain case portion 72, a banking body holding portion 73, a ridge forming body holding portion 74, and the like. The embankment body holding portion 73 is rotatably provided with a embankment body (rotary) 76 that cultivates the soil of the paddy field and the main fence and raises it to the main fence. The heel-forming body holding portion 74 is rotatably provided with a heel-forming body (disk) 77 that forms a new heel by compacting the soil raised by the embedding body 76 at the rear position of the embankment body 76. Yes. The work body 5 is composed of the embankment body 76 and the ridge formation body 77.

  The embankment 76 is composed of, for example, a rotation shaft 78 and a plurality of tilling claws 79 provided on the rotation shaft 78. The ridge forming body 77 includes, for example, a rotation shaft 81, a frustoconical ridge side surface forming portion 82 provided on the rotation shaft 81 and forming an inclined ridge side surface, and a cylinder provided on the rotation shaft 81 and forming a ridge upper surface. And a bowl-shaped upper surface forming portion 83. The embankment body 76 and the ridge forming body 77 both receive the power from the input shaft 42 via the power transmission means 84, and are driven to rotate in a predetermined direction. The power transmission means 84 includes a joint and an extendable transmission shaft.

  Next, the operation of the agricultural machine 1 will be described.

  As shown in FIG. 7 and FIG. 8, at the corner of the field where one heel a and the other heel b intersect at a right angle at the angular position P, the tractor 2 travels forward so as to draw the tractor line C while moving in the left direction. , The working unit 5 of the work implement body 3 is controlled based on the expansion / contraction of the expansion / contraction means 4 and the offset cylinder 10 by the control means controlling the expansion / contraction means (rotating cylinder) 4 and the offset cylinder 10. In the vicinity of the angular position P at the corner of the farm field, it moves in an arc shape so as to draw a telescopic arc-shaped locus A.

  When the tractor 2 is turned forward, the expansion / contraction means 4 and the offset cylinder 10 are gradually extended, and when the rod forming body 77 of the working unit 5 is positioned on a line D that intersects with the rods a and b at an angle of approximately 45 °, The expansion / contraction means 4 and the offset cylinder 10 are in the most extended state, and then the expansion / contraction means 4 and the offset cylinder 10 are gradually contracted. As a result, the working unit 5 extends and contracts in the vicinity of the angular position P at the corner of the field. It moves in an arc shape so as to draw a locus A.

  Moreover, although the unfinished part of length L1 arises in the termination | terminus part of one hail | claw a, and the start end part of the other hail | bowl b, the working machine main body 3 is raised / lowered by the three-point link hitch part 14 of the tractor main body 11. In other words, it is possible to continuously perform the glazing operation on one ridge a and another ridge b that intersect at right angles.

  And according to such a farming machine 1, the back travel of the tractor 2 is unnecessary in the corner part of a farm field, the haze coating work which is an offset work can be performed efficiently, and the unworked part in the corner part of a farm field can be performed. The length can be shortened as much as possible, and the burden of manpower work on unworked parts can be reduced.

  Further, when the expansion / contraction means 4 is contracted, the contraction operation of the expansion / contraction means 4 changes from the unlocked state to the locked state to restrict the rotation of the work machine body 3 relative to the tractor 2, and when the expansion / contraction means 4 is extended, the expansion / contraction means 4 is provided with a lock means 65 that changes the locked state from the locked state to the unlocked state by the extension operation of 4 and allows the work machine body 3 to rotate with respect to the tractor 2. While being able to prevent rotation, the load on the expansion / contraction means 4 can be reduced.

  In the above-described embodiment, as shown in FIG. 1 and the like, the configuration in which the expansion / contraction means 4 is provided on one lower arm 47 of the tractor connecting portion 43 of the work machine body 3 has been described. For example, as shown in FIG. Further, the expansion / contraction means 4 is provided on one lower link 16 of the three-point link hitch portion 14 of the tractor 2, and the work implement main body 3 rotates in the vertical direction with respect to the tractor main body 11 of the tractor 2 by the expansion / contraction operation of the expansion / contraction means 4. You may make it rotate centering | focusing on the dynamic center axis line (rotation fulcrum) X. FIG.

  For example, as shown in FIG. 10, the expansion / contraction means 4 is composed of a first expansion / contraction part 4a and a second expansion / contraction part 4b, and the first expansion / contraction part 4a is composed of one lower link 16 of the three-point link hitch part 14 of the tractor 2. And the second telescopic portion 4b is provided on one lower arm 47 of the tractor connecting portion 43 of the work implement body 3, and the work implement main body 3 is attached to the tractor 2 by the expansion and contraction of the first telescopic portion 4a and the second telescopic portion 4b. You may make it rotate with respect to the tractor main body 11 centering on the rotation center axis line (rotation fulcrum) X of an up-down direction. In any case, the rotation angle α of the work implement body 3 with respect to the tractor 2 based on the operation of the expansion / contraction means 4 serving as the rotation drive means is, for example, 5 ° to 20 °, preferably about 10 °.

Further, although not shown, the expansion / contraction means 4 is provided between the coupler 21 and the tractor connecting portion 43 of the work machine body 3, or the expansion / contraction means 4 is provided between the three-point link hitch portion 14 of the tractor 2 and the coupler 21. Or you may .

It is a top view of the agricultural working machine which concerns on one embodiment of this invention. It is a top view of the agricultural machine other than the corner of a farm field. It is a top view of the agricultural working machine in the corner of a farm field. It is a side view of an agricultural working machine same as the above. It is a partial side view of the locked state of the locking means of an agricultural working machine same as the above. It is a partial side view of the unlocking state of the locking means of an agricultural working machine same as the above. It is explanatory drawing which shows the locus | trajectory at the time of work of a farm working machine same as the above. It is operation | movement explanatory drawing of an agricultural working machine same as the above. It is a top view of the agricultural working machine which concerns on other embodiment of this invention. It is a top view of the agricultural machine concerning other embodiment of this invention .

DESCRIPTION OF SYMBOLS 1 Farm work machine 2 Tractor which is a traveling vehicle 3 Work machine main body 4 Telescopic means which is rotation drive means 5 Working part
10 Offset cylinder
31 Fixed frame
32 Movable machine frame
60 Lock pin
61 Locking hook
65 Locking means
76 Embankment
77 畦 Former A A telescopic arc trajectory that is an operating arc trajectory B B non-extensible arc trajectory that is a non-operating arc trajectory D line P angular position a, b 畦

Claims (1)

A working machine main body connected to the rear portion of the traveling vehicle, and performing a glazing operation that is an offset operation in the working unit while moving by forward traveling of the traveling vehicle;
Rotation drive means for rotating the work machine body with respect to the traveling vehicle;
Locking means for restricting rotation of the working machine body with respect to the traveling vehicle,
Actuation smaller than the radius of curvature of the non-actuated arcuate trajectory when the turning drive means is not actuated when the traveling vehicle turns to the left or right while traveling forward at the corner of the field A farming machine that moves the vicinity of the angular position of the corner of the field in an arc shape based on the operation of the rotation driving means so as to draw an arcuate trajectory,
The working machine body is
A fixed machine frame coupled to the rear of the traveling vehicle;
A movable machine frame movable relative to the fixed machine frame;
Provided in this movable machine frame, the working unit composed of embankment body and ridge forming body,
An offset cylinder for moving the movable machine frame relative to the fixed machine frame;
Control means for controlling the rotation drive means and the offset cylinder,
When the traveling vehicle turns while traveling forward at a corner of the field where one ridge and another ridge meet at a right angle at the angular position, the working unit is configured such that the control unit includes the rotation drive unit and the rotation unit. By controlling the offset cylinder, based on the operation of the rotation driving means and the offset cylinder, the vicinity of the angular position of the corner of the field is moved in an arc shape so as to draw the operating arc-shaped locus,
At the time of forward turning of the traveling vehicle, the offset cylinder is gradually extended, and when the hook forming body of the working unit is located on a line intersecting with the hook at an angle of about 45 °, the offset cylinder is in the most extended state, Thereafter, the offset cylinder gradually shrinks,
The lock means has a lock pin and a lock hook that is pivotable in the up-down direction and is detachably engaged with the lock pin;
Wherein in the state in which the elastic means are contracted a rotary drive means engages with the locking hook and the locking pin together, the rotation of the machine body with respect to the vehicle by the engagement is regulated,
When the telescopic means is extended, the lock hook is rotated upward, the engagement between the lock hook and the lock pin is released, and the rotation of the work implement body relative to the traveling vehicle is allowed. agricultural working machine shall be the feature.

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