JP2002017107A - Farm working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a farm working machine having good operationality. SOLUTION: The levee plastering machine 1 to perform farm work is provided with a 2nd driving shaft 8 connectable and disconnectable with a 1st driving shaft 6 and a soil working means 7 movable between a prescribed working position and a prescribed non-working position. The plastering machine 1 is further provided with a switching means 10 to disconnect the 1st driving shaft 6 from the 2nd driving shaft 8 and moving the soil working means 7 to the prescribed non-working position or connect the 2nd driving shaft 8 to the 1st driving shaft 6 after moving the soil working means 7 to the prescribed working position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural work machine having good operability.

[0002]

2. Description of the Related Art A conventional agricultural working machine includes, for example, a movable drive frame-side second drive shaft which can be connected to and disconnected from a fixed machine frame-side first drive shaft and has a predetermined working position. A ridge coater having a construction provided with a rotary and a ridge coater which is movable to a predetermined non-working position is known.

[0003] In this ridger, the power from the tractor is transmitted to the earth working means side by the first drive shaft and the second drive shaft which are pulled by the tractor and connected to each other.
The rotary and the ridge coating body are driven and rotated, whereby the plowed and jumped soil is applied to the old ridge and a new ridge is formed.

[0004]

However, the above-mentioned conventional ridge coater has a drive source for automatically connecting and disconnecting the first drive shaft and the second drive shaft, or a soil source. Since there is no drive source or the like for automatically moving the position of the work means, for example, an operator gets off the driver's seat of the tractor and manually operates the first drive shaft and the second drive shaft. The connection and disconnection operations must be performed, and the operation of moving the position of the earthwork means must be manually performed.

[0005] The present invention has been made in view of such a point, and an object of the present invention is to provide an agricultural work machine with good operability.

[0006]

According to a first aspect of the present invention, there is provided an agricultural working machine comprising: a first drive shaft; a second drive shaft connectable to and disconnectable from the first drive shaft; An earthworking means movably provided at a predetermined non-working position and performing earthwork in conjunction with the second drive shaft when in the state of being located at the predetermined work position; and 2 after the connection with the drive shaft is released, the earth work means is moved from the predetermined work position to the predetermined non-work position, and the earth work means is moved from the predetermined non-work position to the predetermined work position. And a switching drive means for connecting the second drive shaft to the first drive shaft after moving the first drive shaft.

In this construction, the earth working means is moved to a predetermined working position by the switching drive means having a driving source such as a cylinder during work, and then the second drive shaft is connected to the first drive shaft. The earth work means is driven by the driving force from the second drive shaft to perform the earth work, and when the work is not performed, the connection between the first drive shaft and the second drive shaft is released. Move to a predetermined non-working position.

According to a second aspect of the present invention, in the agricultural working machine according to the first aspect, the switching drive means has a single drive source, and the first drive shaft is driven by a driving force from the single drive source. And the second drive shaft and the second drive shaft, and moves the earthworking means to a predetermined working position and a predetermined non-working position.

In this configuration, the switching drive means connects and disconnects the first drive shaft and the second drive shaft with driving force from a single drive source, and switches the earth work means to a predetermined position. Is moved to the working position and the predetermined non-working position, so that the structure is simple and the number of parts is small as compared with a structure including a plurality of drive sources.

According to a third aspect of the present invention, there is provided the agricultural working machine according to the first or second aspect, wherein the switching drive means includes a second driving means.
Is provided so as to be able to advance and retreat with respect to the first drive shaft along the axial direction of the second drive shaft.
A reciprocating body that can be engaged with the drive shaft of
An urging body for urging toward the drive shaft side, and in one state, the reciprocating body is advanced by the urging force of the urging body to engage with the first drive shaft, and in another state, The reciprocating body is retracted against the urging force of the urging body to disengage the advancing / retreating body from the first drive shaft, and the first drive shaft and the second drive shaft are disengaged.
And a driving body for releasing the connection with the driving shaft.

In this configuration, the advancing / retreating member is advanced by the urging force of the urging member and is engaged with the first drive shaft.
A second drive shaft can be appropriately connected to the first drive shaft,
The first drive shaft and the second drive shaft are connected by disengaging the first drive shaft and the second drive shaft by retracting the advance / retreat body against the biasing force of the biasing body. Can be appropriately released.

According to a fourth aspect of the present invention, there is provided the agricultural work machine according to the third aspect, wherein the switching driving means is configured to be in the retreating state until the earth working means moves from the predetermined non-work position to the predetermined work position. And a retreating state holding means for causing the retreating body to advance by the urging force of the urging body when the earthworking means is located at a predetermined work position.

In this configuration, the retreating state holding means can hold the retreating state of the reciprocating body until the earthworking means moves from the predetermined non-working position to the predetermined working position.
The advance / retreat body on the second drive shaft side can be smoothly engaged with the first drive shaft.

According to a fifth aspect of the present invention, there is provided the agricultural working machine according to any one of the first to fourth aspects, wherein the soil working means includes: a rotary for plowing and lifting the soil for furrowing; And a levee-coated body for applying the soil that has been flipped up and raised to the old ridges to form a ridge. The rotary and the ridge-coated body are positioned at a work position protruding to one side from a tractor, and the tractor is Is positioned at the non-working position behind the.

[0015] With this configuration, the ridge-coating operation can be appropriately performed with the rotary and ridge-coated bodies.
The transportability during non-operation is improved.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of an embodiment of a ridger according to the present invention will be described below with reference to the drawings.

1 to 6, reference numeral 1 denotes a ridge coating machine as an agricultural work machine. The ridge coating machine 1 is detachably mounted on a tractor T and is towed to perform ridge coating work.

The ridge coater 1 has a fixed machine frame 2 fixedly connected to the tractor T. The fixed machine frame 2 has a movable machine frame 3 capable of adjusting the position in the left-right direction as a connected body. A PTO shaft (not shown) of the tractor T is provided through a pair of connecting arms 4a and 4b such as parallel links.
A first drive shaft 6 such as an input shaft is rotatably provided via a universal joint or the like.

The movable machine frame 3 is provided with earth work means 7 which is set to move to a predetermined working position and a predetermined non-working position substantially horizontally in the left-right direction in accordance with the position adjustment of the movable machine frame 3. , And a second drive shaft 8 that can be connected to and disconnected from the first drive shaft 6 is rotatably provided.

On the other hand, the ridge coating machine 1 has a switching drive means 10 constituted by a cylinder 9 or the like as a single drive source which operates in accordance with an operation of an operation section (not shown) of a driver's seat of the tractor T. The connection and disconnection (clutch on / off) of the first drive shaft 6 and the second drive shaft 8 are automatically performed based on the power from the cylinder 9 of the switching drive means 10, and The movement of the work means 7 to the predetermined work position and the predetermined non-work position (position movement setting of the earth work means) is automatically performed. The switching drive means 10 has both a function of switching the engagement and disengagement of the clutch and a function of switching the position of the earthworking means 7.

As shown in FIGS. 1 to 3, the fixed machine frame 2 has a base portion 11, on which a three-point connecting portion 12 as a tractor connecting portion is provided in front of the tractor T side. A three-point link mechanism T1 of the tractor T (hydraulic device for lifting and lowering the work implement) is detachably connected to the three-point connecting portion 12 so as to protrude. The three-point connecting portion 12 includes a top mast 14 having a top pin 13, a pair of left and right lower arms 16, 16 having a lower pin 15, and the like.

A bearing 21 is provided below the base 11, and the first drive shaft 6 is rotatably held by the bearing 21.

The axial direction of the first drive shaft 6 coincides with the front-rear horizontal direction of the ridge coater 1, and the PT
The O-axis is connected via a universal joint or the like. As shown in FIG. 7, a spline shaft portion 22 is formed at the rear end of the first drive shaft 6, and the spline shaft portion 22 projects rearward from the bearing portion 21. Fixed engaging body as one engaging body on the outer peripheral side of the part
23 is fixedly attached. This fixed engagement body 23
Is a part of the first drive shaft 6, has a substantially cylindrical tubular base portion 24 spline-fitted to the spline shaft portion 22, and has an edge portion of the tubular base portion 24. A plurality of clutch claws 25 are formed integrally. The fixed engagement body 23 is
The movement is restricted by a retaining pin (not shown) attached to the spline shaft 22 and is restricted.

Further, as shown in FIG. 6, a shaft holding portion 31 is provided on the upper portion of the base portion 11, and a movable shaft 32 whose axial direction coincides with the vertical direction by the shaft holding portion 31 is provided.
Are held movably substantially in the front-rear horizontal direction.

That is, elongated holes 35 having a longitudinal direction in the front-rear direction are formed in the horizontal holding plate portions 33 and 34 of the shaft holding portion 31 which are vertically opposed to each other.
The movable shaft 32 is movable along the elongated hole 35.

The movable shaft 32 has one end of a wire 37, which is a linear member, attached to the upper end thereof via an attachment member 38. A portion near one end of the wire 37 is inserted into and supported by an insertion member 40 at the distal end of a wire support arm 39 erected on the holding plate portion 33 above the shaft holding portion 31. At the center of the movable shaft 32 in the up-down direction, the tip of a rod 9a that can move forward and backward of the cylinder 9 is rotatably attached. The movable machine frame 3 is formed with a connecting shaft 30 for a cylinder whose axial direction coincides with the vertical direction.
In addition, a connecting portion 9b on the base end side of the cylinder 9 is rotatably connected.

On both ends in the left-right direction of the base portion 11, shaft members 44, 44 whose axial directions coincide with each other in the up-down direction are pivotally supported, and each of the shaft members 44 has a connecting arm 4a, 4b. The front end is rotatably mounted.

As shown in FIGS. 1 to 3, the movable machine frame 3 has an arm connecting portion 45, and a gear case portion which moves integrally with the arm connecting portion 45 in the left and right horizontal direction of the ridge coating machine 1. The gear case portion 46 has a rotary support portion 47 and a ridge coating body support portion 48 integrally protruding toward the right side, which is one side. In addition,
Each of the rotary support portion 47 and the ridge-coated body support portion 48 is formed in a hollow shape and has a function of a transmission case.

At the left and right ends of the arm connecting portion 45, shaft members 49, 49 whose axial directions coincide with each other in the vertical direction are supported by shafts. The rear end is rotatably mounted.

At the left end of the arm connecting portion 45, a regulating wheel holding portion 50 is formed so as to protrude rearward, and the regulating wheel 51 for maintaining a working posture can be adjusted in height by the regulating wheel holding portion 50. Is held in. The regulating wheel 51 has, for example, a ring main body 52 formed in a substantially bowl shape, and an annular blade 53 that cuts the ground and advances is formed on a peripheral portion of the ring main body 52. The shaft member 49 at the left end of the arm connecting portion 45 is disposed coaxially with the connecting shaft portion 30.

As shown in FIG. 7, a plurality of bearings 55 are fixed to the inside of the gear case part 46, and the second drive shaft 8 is rotatably held by these bearings 55. The drive shaft 8 of the first drive shaft 6 is positioned opposite to the first drive shaft 6 (the first drive shaft 6
(A position located on a straight line with the first drive shaft 6) and a position not opposed to the first drive shaft 6.

The axial direction of the second drive shaft 8 coincides with the horizontal direction in the front-rear direction of the ridge coater 1, and the spline shaft portion 56 is provided on the front side.
The spline shaft portion 56 protrudes forward from the front surface of the gear case portion 46, and a movable engagement member 58, which is the other engagement member as an advance / retreat member, is provided on the outer peripheral side of the protruding portion.
Is attached.

The movable engagement body 58 has a substantially cylindrical tubular base 59 which is spline-fitted to the spline shaft 56 of the second drive shaft 8 and is slidable in the axial direction.
A plurality of clutch claws 60 having a shape to be fitted to the clutch claws 25 of the first drive shaft 6 are integrally formed on the edge of the 59. That is, the movable engagement body 58 is provided on the second drive shaft 8 so as to be able to advance and retreat with respect to the first drive shaft 6 along the axial direction of the second drive shaft 8, and the first engagement shaft 58 is moved to the first drive shaft 6. It engages with the fixed engagement body 23 of the drive shaft 6 so as to be freely engaged and disengaged. Note that the movable engagement body 58 is prevented from coming off by the retaining member 26 with respect to the second drive shaft 8.

On the outer peripheral side of the front end of the second drive shaft 8, a cylindrical coil spring 61 which is an elastic body as an urging member is provided.
The coil spring 61 constantly urges the movable engagement body 58 forward, that is, on the first drive shaft 6 side. The front end portion of the second drive shaft 8 on which the coil spring 61 and the movable engagement body 58 are mounted is disposed inside a case body 62 whose lower surface and front and rear surfaces are open as shown in FIG.

As shown in FIGS. 1 and 2, the rotary support portion 47 rotatably supports the rotary output shaft 65 at a tip end at the right end position of the ridge coating machine 1. The direction coincides with the front-rear horizontal direction of the ridge coater 1. The rotary output shaft 65 has a front end protruding forward from the rotary support portion 47, and a claw mounting member 66 is directly connected and fixed to the outer peripheral side of the protruding portion, and a plurality of claws 67 are radially attached to the claw mounting member 66. Installed.

The pawl 67, the pawl mounting member 66 and the like constitute a rotary 68 as a pretreatment body. The rotary 68 receives the driving force from the tractor T on the first drive shaft 6, 2 drive shaft 8, sprocket 69, chain 7
0, transmitted via the rotary output shaft 65 and the like. When the rotary 68 receives the driving force, the rotary output shaft 65
It drives and rotates together with it, tilling the soil for furrowing and bouncing up. Note that a cover body 71 is arranged above the rotary 68, and a guide body 72 is arranged on the side. Also,
The rotary 68 is capable of adjusting the working depth position by rotating the handle 73 so as to appropriately respond to the soil condition of the field.

As shown in FIGS. 1 and 2, the furrowing body support unit 48 rotatably supports the furrowing body output shaft 75 at the tip end at the right end position of the furrowing machine 1. The axial direction of the ridge coat body output shaft 75 coincides with the left and right horizontal direction of the ridge coater 1. A mounting member (not shown) is directly connected and fixed to the outer peripheral side of the tip of the ridge-coated body output shaft 75, and the ridge-coated body 76 is fixed to the mounting member and is located at a position behind the rotary 68. The ridge coating body 76 includes, for example, a cylindrical upper surface coating member 77 for lining the upper surface of the old ridge, a frustoconical side coating member 78 for lining the inclined side surface of the old ridge, and the like. Have been. Note that a cover body 79 for preventing scattering of soil is disposed above the ridge coating body 76.

Then, the driving force from the tractor T is applied to the ridge-coated body 76 by the first drive shaft 6, the second drive shaft 8, the bevel gear 81, the shaft 82, the chain 83, the sprocket 84, and the ridge-coated body. When transmitted via the output shaft 75 and the like, and receiving the driving force, the ridge coating body 76 is driven to rotate integrally with the ridge coating body output shaft 75 in conjunction with the rotary 68.

As a result, the soil for ridge application from the rotary 68 is applied to the upper surface of the old ridge by the upper coating member 77, and is applied to the inclined side surface of the old ridge by the side coating member 78.
A new ridge is formed. The rotation speed of the ridge coat body 76 is set to be higher than the wheel rotation speed of the tractor T. In addition, the earth work means 7 is constituted by the rotary 68 and the ridge coating body 76.

On the other hand, as shown in FIGS. 4 to 6, the case body 62 fixed to the gear case section 46 of the movable machine frame 3 has a pair of side plate parts 62a and 62b which are separated from each other and left and right. A support shaft 86 whose axial direction coincides with the left-right horizontal direction is bridged between both side plate portions 62a and 62b. A pair of clutch engagement / disengagement rotation arms 87 and 88 as a rotation body having a shape of a straight plate and having a length different from each other in a vertical direction, centering on the left and right horizontal support shaft 86, are rotated in the front-rear direction. It is possible to move.

The pair of clutch engagement / disengagement rotary arm members 87, 88 are disposed to face each other with a predetermined interval left and right, and a pair of projections 89, 89 are provided at the lower part of the facing surface. They are integrally protruded toward the approaching direction. As shown in FIG. 7, each projection 89 fits into a concave groove portion 90 formed in an annular shape at the edge of the cylindrical base portion 59 of the movable engagement body 58,
It is always located in the concave groove portion 90.

The clutch engagement / disengagement rotary arm 88 having a longer length on the right side has a wire connecting pin 91 protruding laterally at the lower end of the surface opposite to the opposing surface. The distal end of the wire connecting pin 91 protrudes rightward from the side plate 62b via a not-shown notch of the right side plate 62b, which is one side of the case body 62. And this wire connecting pin
The other end of the wire 37, one end of which is attached to the movable shaft 32 of the fixed machine frame 2, is attached to the projecting portion of the 91 via an attachment member 92. The portion near the other end of the wire 37 is a side plate portion.
The wire support plate 93 projecting from the side 62b is inserted into and supported by the insertion member 94 of the wire support plate 93.

Furthermore, the upper end of the case body 62 has the upper plate 62
A projecting part of the connecting body 96 that projects upward from the upper plate part 62c through the slit-shaped opening part 95c and that is formed by a rod-shaped member bent in a U-shape at this projecting part is movable in the front-rear horizontal direction. One end is connected. The other end of the connecting body 96 is connected to the lower end of a retreating state holding rotating arm 97 as a rotating body formed of an elongated plate member bent in a V shape.

The revolving arm 97 for holding the retracted state is attached to a left-right horizontal support shaft 99 formed on a projecting plate 98 projecting upward from the upper plate 62c of the case body 62. It is rotatable in the front-rear direction around 99.
A rectangular plate-shaped sliding contact plate portion 100 is formed on the upper end portion of the retreating state holding rotating arm body 97 in a substantially water surface shape.

The sliding contact plate portion 100 is in sliding contact with the lower surface of a substantially elongated rectangular plate-shaped guide portion 102 formed on the lower surface portion of the rotation restricting body 101, and slides in the longitudinal direction of the guide portion 102. It is possible to move along. When the sliding contact plate portion 100 is in sliding contact with the rotation restricting body 101, the clutch on / off turning arm members 87 and 88 and the retreat state holding turning arm member 97 are turned based on the urging force of the coil spring 61. When the sliding contact plate portion 100 is separated from the guide portion 102, the clutch engagement / disengagement rotation arm members 87 and 88 and the retraction state holding rotation arm member are controlled.
As the 97 rotates by a predetermined amount, the connector 96 moves forward by a predetermined distance. The rotation restricting body 101 is fixed to a central portion in the longitudinal direction of the left connecting arm body 4a, which is one side.

The movable body 32, the wire 37, the wire connecting pin 91, the clutch engagement / disengagement rotating arms 87, 88, etc.
111 are configured. Further, the rotation restricting body 101, the rotation arm body 97 for holding the backward state, the connecting body 96, and the like constitute a backward state holding means 112, and the switching state driving means 10 is comprised of the backward state holding means 112 and the driving body 111. Have been.

Next, description will be made on a case where a ridge painting operation for repairing an old ridge is performed using the above embodiment.

In performing the ridge coating work, which is an earthwork,
The worker lifts and holds the ridge coater 1 at a predetermined height position by using the three-point link mechanism T1 of the tractor T, and moves the earth work means 7 including the rotary 68 and the ridge coat body 76 to the predetermined work position. Set (FIGS. 1 and 4).

In the state set at the predetermined work position shown in FIG. 1, the rotary 68 and the ridge coater 76 are arranged on the right side of the ridge coater 1 and protrude to the right side, which is one side of the tractor T. ing. That is, the rotary 68 and the furrow 76 are located at positions protruding outward due to the rear position of the wheel A on one side of the tractor T.

In this state, as shown in FIGS. 1 and 4, the rod 9a of the cylinder 9 of the switching drive means 10 is in the retracted state, and the second drive shaft 8 is coaxial with the first drive shaft 6. Is set above. The movable engagement member 58 of the second drive shaft 8 advances by the urging force of the coil spring 61, and the movable engagement member 58 engages with the fixed engagement member 23 of the first drive shaft 6, and the first drive The second drive shaft 8 is connected to the shaft 6 so that power from the tractor T can be transmitted from the first drive shaft 6 to the second drive shaft 8.

The three-point link mechanism T1 of the tractor T
After the lifting of the tractor T is released, the tractor T is caused to travel in the forward traveling direction while the wheels of the tractor T are being moved along the old ridge. Then, the driving force from the tractor T is input to the first driving shaft 6 of the ridge coating machine 1.

The input driving force is transmitted to the rotary 68 and the ridge coating via transmission means 110 such as the first driving shaft 6, the second driving shaft 8, the rotary output shaft 65, and the ridge coating body output shaft 75. It is transmitted to the body 76, as a result, the soil for furrowing is cultivated by the rotary 68 and is flipped up, and the fluttered up soil is painted on the old furrows by the furrowing body 76 and is laid.
A new ridge is formed.

On the other hand, when transporting the ridge coater 1 or attaching / detaching the ridge coater 1 to / from the tractor T, the worker uses the rotary 68.
The earth work means 7 including the ridged body 76 is set to a predetermined non-work position (FIGS. 2 and 5).

For example, when the operator operates the operation section of the driver's seat of the tractor T, the switching drive means of the ridger 1
Based on the power from the cylinder 9, the first drive shaft 6
And the second drive shaft 8 is disconnected, and subsequently, the rotary 68 and the ridge body 76 rotate by a predetermined amount from a predetermined working position to a predetermined non-working position, and then move to a predetermined non-working position. Is positioned and fixed.

That is, according to the output signal from the operation unit,
When the rod 9a of the cylinder 9 of the switching drive means 10 advances from the cylinder body 9b, first, the movable shaft 32 along with the rod 9a moves along the long hole 35 toward the front of the ridge coating machine 1 in the direction of the arrow in FIG. Move.

After the movable shaft 32 has moved from the rear end to the front end of the elongated hole 35, the pair of connecting arms 4a, 4b, which are parallel links, Start rotating around 44
The movable machine frame 3 moves in an arc shape together with 4a and 4b, and the rotary 68 and the ridge-coated body 76 are set at predetermined non-working positions.

On the other hand, the movement of the movable shaft 32 causes the wire
37 is pulled, the turning arm body 88 for clutch on / off,
The lower end of the rotating arm body 88 rotates in the backward direction, whereby the movable engaging body 58 changes from the advanced state to the retracted state by moving in the axial direction by overcoming the urging force of the coil spring 61. Then, the engagement between the movable engagement body 58 of the second drive shaft 8 and the fixed engagement body 23 of the first drive shaft 6 is released, and the connection between the first drive shaft 6 and the second drive shaft 8 is established. It is released.

With the rotation of the clutch engagement / disengagement rotation arm 88, the retreat state holding rotation arm 97 is moved in such a direction that the lower end of the retreat state holding rotation arm 97 faces forward. The sliding contact plate portion 100 descends to a predetermined height position, so that the retreating state holding rotating arm body 97 and the rotation restricting body 101 do not interfere with each other, and the sliding contact plate portion 100 is Rotation restricting body 101
Move along the guide section 102 of FIG.

In the state that the rotary 68 and the ridge body 76 are set at the predetermined non-working position shown in FIG. The rear position of the tractor T is, for example, such that the right and left weight balance of the tractor T in a state where the ridge coater 1 is lifted and held can be improved.
The center of gravity of the entire ridge coater 1 is behind the tractor T
Position on the center line in the left-right direction, or, for example,
The dimension of the ridger 1 in the left-right direction (width dimension) so that the protrusion of the ridger 1 on the tractor T side can be reduced.
Is a position located on the center line in the left-right direction behind the tractor T. In the rear position of the tractor T, the center of gravity of the entire ridge coating machine 1 and the center of the horizontal dimension (width dimension) of the ridge coating machine 1 are both located behind the tractor T on the horizontal center line X. A position is more preferable.

When the operator appropriately operates the operating section of the driver's seat of the tractor T when resetting the predetermined non-working position in FIG. 2 to the predetermined working position in FIG. Based on the power from the cylinder 9 of the switching drive means 10 of the rotary drive 68, the rotary 68 and the levee body 76 rotate from a predetermined non-work position to a predetermined work position by a predetermined amount, and thereafter, the first drive The second drive shaft 8 is connected to the shaft 6.

That is, according to the output signal from the operation unit,
When the rod 9a of the cylinder 9 of the switching drive means 10 is retracted into the cylinder body 9b, first, the movable shaft 32 is moved together with the rod 9a.
Moves toward the rear of the ridge coater 1 along the long hole 35.

When the movable shaft 32 moves from the front end to the rear end of the elongated hole 35, the tensile force acting on the wire 37 decreases, and the movable engaging body 58 is set in the advanced state by the urging force of the coil spring 61. I do.

However, when the sliding contact plate portion 100 of the reversing state holding rotating arm 97 and the guide portion 102 of the rotation restricting body 101 come into contact with the retreating state holding means 112, the clutch engagement / disengagement turning arm body is provided. The rotation of the rotating arm 87 and 88 and the rotating arm 97 for holding the retracted state is regulated, and as a result, the rotary 68 and the ridge coating body 76 are rotated.
The retracted state of the movable engaging body 58 is maintained until the movable engaging body 58 reaches the predetermined working position until the movable engaging body 58 moves from the predetermined non-working position to the predetermined working position. The coil spring 61 is brought into the advanced state by the urging force. Then, the movable engagement body 58 is engaged with the fixed engagement body 23 of the first drive shaft 6, and the second drive shaft 8 is connected to the first drive shaft 6.

As described above, according to the above-described embodiment, the operation of connecting and disconnecting the first drive shaft 6 and the second drive shaft 8 and the operation of moving the position of the earthworking means 7 are performed in a predetermined manner. Occasionally, it is not necessary to perform each operation manually, and the operability is extremely good as compared with the conventional configuration.

The switching drive means 10 uses the driving force from the cylinder 9 which is a single drive source, to switch the first drive shaft 6 and the second drive shaft
Is connected to and disconnected from the drive shaft 8 and the earth working means 7 is moved to a predetermined working position and a predetermined non-working position. Therefore, the configuration is simpler than a configuration having a plurality of driving sources. Therefore, the number of parts is small, and manufacturing and maintenance can be facilitated.

Further, the retreating state holding means 112 can hold the retreating state of the movable engagement member 58 of the second drive shaft 8 until the earth working means 7 moves from the predetermined non-working position to the predetermined working position. The movable engagement body 58 of the second drive shaft 8 can be smoothly and reliably engaged with the fixed engagement body 23 of the first drive shaft 6, and the second drive shaft 8 can be more securely connected to the first drive shaft 6. It can be connected more appropriately.

In the above embodiment, the driving body
Although the description has been made assuming that the 111 comprises the movable shaft 32, the wire 37, the wire connecting pin 91, the clutch engagement / disengagement turning arm members 87 and 88, etc., for example, the configuration of the driving body 121 shown in FIGS. The same operation and effect can be obtained.

The driving body 121 shown in FIGS. 8 and 9 has a horizontal substantially rectangular plate-shaped fixing member 122 fixed to the lower end of the movable shaft 32. Tubular part 123
Are formed, and a left and right horizontal support shaft 124 is formed in the cylindrical portion 123.
Are rotatably inserted.

A pair of left and right rotating arms 125, 1 each having an elongated plate shape having a longitudinal direction in the vertical direction are provided at both ends of the support shaft 124.
The upper end of each of the 25 is connected and fixed. The pair of left and right rotating arms 125 are disposed so as to be spaced apart from each other and left and right with a predetermined space therebetween, and the lower ends thereof are integrally connected by one left and right horizontal support shaft 126. Are rotatably supported by bearings 127 such as a pair of left and right support plates protruding downward from the lower surface of the rear end of the mast bottom plate 14a of the top mast 14 of the fixed machine frame 2. One end of the support shaft 126 in the axial direction is fixedly connected to the upper end of one pressing rotary arm 128 having an elongated plate shape having a longitudinal direction in the vertical direction. A pressing portion 129 is formed at the lower end. The pressing portion 129 presses the pressed pin 130 protruding laterally at the lower end of the clutch engagement / disengagement rotating arm body 88 having the longer right side, instead of the wire connecting pin 91. Is what you do.

The driving body shown in FIGS. 8 and 9
In 121, when the rod 9a of the cylinder 9 of the switching drive means 10a advances from the cylinder body 9b, the movable shaft 32 moves along the long hole 35 toward the front of the ridge coating machine 1 together with the rod 9a.

After the movable shaft 32 moves from the rear end to the front end of the elongated hole 35, a pair of connecting arms 4a and 4b, which are parallel links, are connected to each other based on the movement restriction of the movable shaft 32. Start rotating around 44
The movable machine frame 3 moves in an arc shape together with 4a and 4b, and the rotary 68 and the ridge-coated body 76 are set at predetermined non-working positions.

On the other hand, along with the movement of the movable shaft 32, the fixed member 122 moves integrally with the movable shaft 32 in the forward direction. In response to the movement of the fixing member 122, the turning arm 125 and the pressing turning arm 128, which are integrated with each other via the support shaft 126 and have a substantially rectangular shape in side view, form a support shaft 126 in the left-right horizontal direction. Is pivoted by a predetermined amount in the direction in which the lower end of the pivoting arm 128 for pressing moves rearward.

As a result, the pressed pin 130 of the clutch engagement / disengagement rotation arm 88 is pressed by the pressing portion 129 moving backward from the standby position to the operation position, and the clutch engagement / disengagement rotation arm body is pressed. 88 rotates in the direction in which the lower end faces rearward,
As a result, the movable engagement member 58 changes from the advanced state to the retracted state by overcoming the urging force of the coil spring 61 and moves in the axial direction, and the movable engagement body 58 of the second drive shaft 8 and the first drive shaft 6 is disengaged from the fixed engagement body 23, and the connection between the first drive shaft 6 and the second drive shaft 8 is released.

When the second drive shaft 8 is located at a position other than the position facing the first drive shaft 6, the sliding contact plate portion 100 and the rotation restricting member 101 of the retreating state holding rotation arm 97 are held. Guide part of
By contact with 102, the clutch engagement / disengagement rotary arm bodies 87, 8
The rotation of the rotating arm 8 and the holding arm 97 for retreating state is restricted, and the retreating state of the movable engagement body 58 is held.

When the rod 9a of the cylinder 9 of the switching drive means 10a retreats into the cylinder body 9b, the movable shaft 32 moves along the long hole 35 toward the rear of the ridge coating machine 1 together with the rod 9a. In accordance with the movable shaft 32, the fixed member 122 moves rearward, and the rotating arm 125 and the pressing rotating arm 128 move around the support shaft 126, and the lower end of the pressing rotating arm 128 moves forward. In a predetermined direction. As a result, the pressing portion 129 moves forward from the operation position to the standby position.

Thereafter, when the rod 9a further retreats into the cylinder body 9b, the sliding contact plate portion 100 of the reversing state holding rotating arm body 97 slides on the guide portion 102 of the rotation regulating body 101, and The ridge coat body 76 moves to a predetermined work position. When the rotary 68 and the ridge body 76 reach a predetermined working position, and the second drive shaft 8 is located at a position facing the first drive shaft 6, the sliding contact plate portion 100 separates from the guide portion 102 and the clutch engages. The turning arm members 87 and 88 for cutting and the turning arm member 97 for holding the retreat state are turned by a predetermined amount,
The connecting body 96 moves forward by a predetermined distance.

As a result, the movable engagement body 58 is advanced by the urging force of the coil spring 61, and the movable engagement body 58 is engaged with the fixed engagement body 23 of the first drive shaft 6, and The second drive shaft 8 is connected.

As described above, the driving body shown in FIGS.
The furrowing machine 1 equipped with 121 is also used for the furrowing machine 1 shown in FIG.
Similarly, the first drive shaft 6 and the second drive shaft 8 are manually formed.
There is no need to perform the connection and disconnection operations with the control unit and the position moving operation of the earthworking means 7, and it is possible to achieve operational effects such as extremely good operability as compared with the conventional configuration.

In each of the above embodiments, the agricultural work machine is described as the ridge coater 1. For example, although not shown, an offset agricultural work machine for performing earth work on one side in the left and right direction, such as a trench machine, is not shown. If so, it can be applied to any kind.

[0080]

According to the first aspect of the present invention, the connection between the first drive shaft and the second drive shaft is released by operating the switching drive means having a drive source such as a cylinder. Since the earth working means can be moved to a predetermined non-working position and the earth working means can be moved to the predetermined working position and then the second drive shaft can be connected to the first drive shaft, the first drive shaft and the second drive shaft can be connected.
It is not necessary to manually perform the connection and disconnection operations with the drive shaft and the position moving operation of the earthworking means, respectively, and the operability is extremely good as compared with the conventional configuration.

According to the second aspect of the present invention, the switching drive means connects and disconnects the first drive shaft and the second drive shaft with a drive force from a single drive source such as one cylinder. And moving the earthworking means to a predetermined working position and a predetermined non-working position, so that the configuration is simpler, the number of parts is smaller, and Easy.

According to the third aspect of the present invention, the second drive shaft is connected to the first drive shaft by causing the advance / retreat body to advance by the urging force of the urging member and to engage with the first drive shaft. Can be properly connected,
The first drive shaft and the second drive shaft are connected by disengaging the first drive shaft and the second drive shaft by retracting the advance / retreat body against the biasing force of the biasing body. Can be properly released.

According to the fourth aspect of the present invention, the retreating state holding means can hold the retreating state of the movable body until the earth working means moves from the predetermined non-working position to the predetermined working position. Can smoothly engage with the first drive shaft, and the second drive shaft can be more appropriately connected to the first drive shaft.

According to the fifth aspect of the present invention, it is possible to appropriately perform the ridge coating work with the rotary and ridge coating bodies.
In addition, transportability and the like during non-operation can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view at the time of work showing an embodiment of an agricultural work machine of the present invention.

FIG. 2 is a plan view of the above ridge coater when it is not working.

FIG. 3 is a side view of the same ridge coater.

FIG. 4 is a partially enlarged plan view of the above ridge coater during operation.

FIG. 5 is a partially enlarged plan view of the above ridge coater when not working.

FIG. 6 is a partially enlarged side view of the above ridge coater.

FIG. 7 is a cross-sectional view of a transmission means of the above ridger.

FIG. 8 is a plan view of a modification of the driving body of the above ridge coating machine.

FIG. 9 is a side view of the same driving body.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ridger which is an agricultural work machine 6 First drive shaft 7 Earth work means 8 Second drive shaft 9 Cylinder 10 and 10a as a single drive source Switching drive means 58 Movable engaging body 61 as advancing and retracting body 61 Energizing body Coil spring 68 Rotary 76 Row coating body 111, 121 Driver 112 Retraction state holding means

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B033 AA05 AB03 AB11 AB19 AC05 BA01 BB02 CA22 DA04 DA06 ED01 ED20 2B034 AA02 BA02 BA06 BA07 BB01 BC06 BD03 DA03 DB07 DB13 DB15 2B304 KA08 KA10 KA20 LA02 LA04 LB05 MB03 LC03 MA03 PA03 PC07 PD32 RA05 RA23

Claims (5)

[Claims] A first drive shaft, a second drive shaft that can be connected to and disconnected from the first drive shaft, and that is provided movably to a predetermined work position and a predetermined non-work position. An earthworking means for performing earthwork in conjunction with the second drive shaft when in a state of being located at a predetermined work position, and after disconnecting the first drive shaft and the second drive shaft, Moving the earth working means from the predetermined working position to the predetermined non-working position, moving the earth working means from the predetermined non-working position to the predetermined working position, and then moving the earth driving means to the first drive shaft. An agricultural working machine comprising: a switching drive unit for connecting a second drive shaft. 2. The switching driving means has a single driving source,
The driving force from the single drive source connects and disconnects the first drive shaft and the second drive shaft, and moves the earth working means to a predetermined work position and a predetermined non-work position. The agricultural work machine according to claim 1, characterized in that: 3. The switching drive means is provided on the second drive shaft so as to be able to advance and retreat with respect to the first drive shaft along the axial direction of the second drive shaft. And an urging body for urging the moving body toward the first drive shaft. In one state, the moving body is advanced by the urging force of the urging body. Engaging the first drive shaft, and in other states, retreating the advance / retreat body against the urging force of the urging body to release the engagement between the advance / retreat body and the first drive shaft; The agricultural work machine according to claim 1, further comprising a driving body that disconnects the first drive shaft and the second drive shaft. 4. 4. The switching drive means holds the retreat state of the retreating body until the earth working means moves from a predetermined non-working position to a predetermined working position, and the earth working means is located at the predetermined working position. 4. The agricultural working machine according to claim 3, further comprising a retreating state holding means for causing the retreating body to advance with the urging force of the urging body. 5. A soil working means comprising: a rotary for plowing and leaching soil for ridge filling and a ridge coating body for laying the old ridge by applying soil cultivated and raised by the rotary to an old ridge. The rotary and the furrowing body are positioned at a work position protruding to one side from a tractor, and are positioned at a non-work position behind the tractor. Agricultural work machine according to crab.