JP2005073634A - Agricultural work vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an agricultural work vehicle free from the necessity to bend a power transmission shaft at a large bending angle. <P>SOLUTION: The agricultural work vehicle 1 is provided with a stationary frame 4 connected to a tractor and a mobile frame 6 supporting a soil treating part 2 and movable to a forwarding work position, a backward work position and a housed non-working position. The input shaft 17 at the side of the stationary frame 4 is connected to the intermediate input shaft 24 at the side of the mobile frame 6 with a power transmission shaft 45. The input shaft 17, the power transmission shaft 45 and the intermediate input shaft 24 are positioned nearly on the same plane. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an agricultural machine that performs soil work in a soil working unit while moving by traveling of a traveling vehicle.

Conventionally, as a farm work machine capable of this type of return work, for example, a fixed machine frame, a movable machine frame that can move to a forward work position, a backward work position, and a retracted non-work position, and to support a soil working part, a fixed An input shaft provided rotatably on the machine frame, an intermediate input shaft rotatably provided on the movable machine frame and positioned at substantially the same height as the output shaft of the soil coating unit, and power from the input shaft. 2. Description of the Related Art A plastering machine that includes a power transmission shaft body that can transmit to an intermediate input shaft and has wide-angle constant velocity joint portions (wide-angle CV joints) at both ends is known (see, for example, Patent Document 1).
JP 2002-78403 A

  However, in the configuration in which the intermediate input shaft is positioned at substantially the same height as the padding body output shaft of the earth work unit, as in the conventional farm work machine, the bending angle required for the power transmission shaft body is inevitably large. Therefore, there is a problem that the power transmission shaft must be folded at a large folding angle.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which does not need to bend a power transmission shaft body with a big fold angle.

  The farm work machine according to claim 1 is a farm work machine that performs soil work in a soil work part while moving by traveling of a traveling vehicle, and a fixed machine frame having a traveling vehicle connecting part, and the earth work part is the travel vehicle. A forward work position for performing earth work based on forward travel of the vehicle, a retreat work position for the earth work unit to perform earth work based on a reverse travel of the traveling vehicle, and a storage in which the soil work unit is located behind the traveling vehicle. A movable machine frame that supports the earth working unit, and a power transmission shaft that transmits power from an input shaft on the stationary machine frame side to an intermediate input shaft on the movable machine frame side. The input shaft, the power transmission shaft body, and the intermediate input shaft are all located on substantially the same plane.

  Since the input shaft, the power transmission shaft body, and the intermediate input shaft are all located on substantially the same plane, the power transmission shaft body that transmits the power from the input shaft to the intermediate input shaft is different from the conventional agricultural machine. There is no need to fold at a large folding angle.

  The agricultural machine according to claim 2 is the agricultural machine according to claim 1, wherein the movable machine frame is rotatably connected to the other end side of the rotating arm body whose one end side is rotatably connected to the fixed machine frame. The longitudinal direction of the rotating arm body substantially coincides with the axial direction of the intermediate input shaft in plan view.

  And since the longitudinal direction of the rotating arm body substantially coincides with the axial direction of the intermediate input shaft in plan view, the end portion on the intermediate input shaft side of the power transmission shaft body can be made into a single joint portion. The cost of the power transmission shaft body is lower than that when a wide angle constant velocity joint is used.

  According to the agricultural machine according to claim 1, since the input shaft, the power transmission shaft body, and the intermediate input shaft are all located on substantially the same plane, the power from the input shaft is intermediately input unlike the conventional agricultural machine. There is no need to fold the power transmission shaft that transmits to the shaft at a large folding angle.

  According to the agricultural machine according to claim 2, since the longitudinal direction of the rotating arm body substantially coincides with the axial direction of the intermediate input shaft in plan view, the end portion on the intermediate input shaft side of the power transmission shaft body is a single joint portion. Therefore, the cost of the power transmission shaft body can be reduced as compared with the case where both end portions are wide angle constant velocity joint portions.

  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. The agricultural machine 1 is a towing type that is used by being attached to the rear part of a tractor (not shown) that is a traveling vehicle. The farm work machine 1 is a small paddy machine that performs the padding work (soil work) with the earth work unit 2 on one side while moving the farm field in the traveling direction (X direction in the figure) by traveling the tractor during the work. .

  The agricultural machine 1 includes a fixed machine frame 4 fixedly connected to a tractor. One end of a single rotating arm body 5 that is a connecting body is connected to the fixed machine frame 4 so as to be rotatable about a first vertical axis Y1. A movable machine frame 6 that supports the earth working unit 2 is connected to the other end side of the rotating arm body 5 so as to be rotatable about the second longitudinal axis Y2.

  The movable machine frame 6 is pivoted about the first vertical axis Y1 of the rotating arm body 5 with respect to the fixed machine frame 4 and centered on the second vertical axis Y2 of the movable machine frame 6 with respect to the rotary arm body 5. The forward work position (see FIGS. 1 and 2) in which the earth work unit 2 performs the scouring work (earth work) based on the forward travel of the tractor by the rotation to be performed, and the earth work unit 2 is based on the backward travel of the tractor. The retreat work position (see FIG. 4) for performing the filling work (soil work) and the soil work part 2 can be selectively moved to the retracted non-work position (see FIG. 3) located behind the tractor.

  For example, the movable machine frame 6 moves along the substantially horizontal direction from the forward working position to the retracted non-working position only by turning about the first vertical axis Y1 of the turning arm body 5 with respect to the fixed machine frame 4. The rotating arm body 5 with respect to the stationary machine frame 4 is stored by both the rotation about the first vertical axis Y1 and the rotation of the movable machine frame 6 with respect to the rotating arm body 5 about the second vertical axis Y2. It moves along the substantially horizontal direction from the non-working position to the reverse working position.

  Here, the fixed machine frame 4 has a three-point connecting portion 11 that is a traveling vehicle connecting portion that is connected to a three-point link portion that is a working machine lifting portion at the rear of the tractor. The three-point connecting portion 11 is composed of one top mast 13 with a top pin 12 attached to the tip portion, and two lower arms 15 with a lower pin 14 attached to the tip portion.

  The fixed machine frame 4 has an input shaft holding part 16 such as a boss. The input shaft holding portion 16 is provided with an input shaft 17 for inputting power from the tractor side so as to be rotatable via a bearing (not shown). Note that the PTO shaft of the tractor is connected to the input shaft 17 on the stationary machine frame 4 side via a universal joint, a transmission shaft, and the like.

  In addition, a single rotating arm body 5 that connects the fixed machine frame 4 and the movable machine frame 6 is provided with a long arm body 21 and an end of the arm body 21 on the movable machine frame 6 side. And a substantially box-shaped intermediate input shaft holding portion 23 rotatably provided via a shaft portion 22 in the horizontal direction.

  An intermediate input shaft 24 on the movable machine frame 6 side is rotatably provided via a bearing (not shown) on the side surface of the substantially box-shaped intermediate input shaft holding portion 23 that also serves as the gear box. Yes. The intermediate input shaft 24 is connected to a transmission means 25 for transmitting power to the earth work unit 2, and the transmission means 25 includes a plurality of bevel gears 26, a shaft 27, and the like.

  Then, the soil is applied by the movable machine frame 6 connected to the lower surface portion of the intermediate input shaft holding portion 23 on the other end side of the rotating arm body 5 so as to be rotatable about the second vertical axis Y2. The working unit 2 is supported.

  That is, the movable body frame 6 that is rotatably connected to the rear end portion of the rotating arm body 5 is capable of rotating a filling body (rotary) 31 that cultivates and raises soil for padding on the front side in the traveling direction.畦 which is provided and compacted so as to push the soil for culling that has been raised by the embankment body 31 on the back side in the traveling direction so as to be pushed into the main culvert, to form an inclined heel inner surface and a horizontal heel surface A forming body (disk) 32 is rotatably provided, and a saddle upper surface processing body 33 that pretreats the saddle upper surface at a position ahead of the embankment body 31 in the traveling direction is rotatably provided. In other words, the earth work unit 2 composed of the dredge upper surface processing body 33, the embankment body 31 and the dredger formation body 32 is supported in a predetermined posture by the movable machine frame 6, and the earth work unit 2 together with the movable machine frame 6 Move to each position.

  The upper surface processing body 33 includes a rotating shaft 34 and a plurality of processing claws 35 that protrude radially from the outer peripheral side of the rotating shaft 34. The embankment 31 is composed of a rotary shaft 36 that is positioned substantially parallel to the rotary shaft 34 of the top surface treatment body 33, and a plurality of tilling claws 37 that project radially from the outer peripheral side of the rotary shaft 36. The rotating shaft 36 of the embankment 31 and the rotating shaft 34 of the top surface treating body 33 are connected via a transmission means (not shown). In addition, the ridge forming body 32 is attached to a rotating shaft 38 that is positioned substantially orthogonal to the rotating shaft 36 of the embankment 31, a substantially frustoconical side surface forming member 39 that is attached to the rotating shaft 38, and the rotating shaft 38. It is composed of a substantially cylindrical upper surface forming member 40 and the like.

  The movable machine frame 6 is provided with a rotatable grounding ring 41 so that the height can be adjusted.

  Further, the movable machine frame 6 can be pivotally adjusted in the vertical direction about the horizontal shaft portion 22 of the pivot arm body 5. That is, the working depth of the embankment 31 of the earth working portion 2 can be adjusted by operating the handle portion 43 of the working depth setting means 42 located between the movable machine frame 6 and the rotating arm body 5.

  On the other hand, the agricultural machine 1 includes a single power transmission shaft body 45 that transmits power from the input shaft 17 located on the stationary machine frame 4 side to the intermediate input shaft 24 located on the movable machine frame 6 side. Yes.

  As shown in FIG. 1, when the earth work unit 2 is in the standard work posture (the two vertical axes Y1 and Y2 are positioned along the vertical direction, and the axial direction of the rotary shaft 36 of the embankment 31 is horizontal. The input shaft 17, the power transmission shaft 45, and the intermediate input shaft 24 are all on substantially the same plane so that their respective rotation center axes (axis cores) coincide with each other in a side view. To position. For example, in the state of FIG. 1, the shafts of the input shaft 17, the power transmission shaft body 45, and the intermediate input shaft 24 are positioned on one inclined plane inclined about 5 degrees with respect to the horizontal.

  As is clear from FIG. 2 and the like, the longitudinal direction of the arm main body 21 of the rotating arm 5 is flat with the axial direction of the intermediate input shaft 24 protruding from the intermediate input shaft holding portion 23 of the rotating arm 5. It is always almost the same visually.

  Here, the power transmission shaft body 45 is bendable at both ends in the axial direction, one end side is connected to the input shaft 17, and the other end side is connected to the intermediate input shaft 24.

  The power transmission shaft body 45 includes, for example, a transmission shaft portion 46 that can be expanded and contracted in the axial direction, and a wide-angle constant velocity joint portion (wide-angle CV) provided at one end portion (end portion on the input shaft 17 side) of the transmission shaft portion 46. A joint) 47 and a single joint portion 48 provided at the other end of the transmission shaft portion 46 (the end portion on the intermediate input shaft 24 side).

  The transmission shaft portion 46 includes an inner shaft 51, an outer shaft 52, and the like. The wide-angle constant velocity joint portion 47 includes two cross pins (spiders) 53 having a cross shape, an input shaft side yoke 54, an intermediate yoke (CV yoke) 55 and a transmission shaft portion side yoke 56. The single joint portion 48 includes a cross-shaped cross pin (spider) 57, an intermediate input shaft side yoke 58, a transmission shaft portion side yoke 59, and the like.

  The input shaft 17 is connected to the input shaft side yoke 54 of the wide angle constant velocity joint portion 47 by being formed integrally with the yoke 54, and the intermediate input shaft side yoke 58 of the single joint portion 48 is connected to the intermediate input shaft. 24 are connected by spline fitting. The power transmission shaft body 45 is covered with a substantially cylindrical shaft body cover 60.

  In addition, the agricultural machine 1 includes first fixing means 61 and second fixing means 62 that removably fix (lock) the movable machine frame 6 to the forward work position, the retracted non-work position, and the reverse work position.

  The first fixing means 61 includes a substantially cylindrical cylinder main body 63 having a hole formed at a predetermined position, a rod 64 with a hole slidably inserted into the cylinder main body 63, and a cylinder main body 63 aligned with each other. And a pin (not shown) inserted into the hole and the hole of the rod 64. The cylinder body 63 of the first fixing means 61 is rotatably attached to an intermediate part of the arm body part 21 of the turning arm body 5. The rod 64 of the first fixing means 61 is rotatably attached to the fixing machine frame 4.

  Similarly to the first fixing means 61, the second fixing means 62 includes a substantially cylindrical cylinder body 65 having a hole formed in a predetermined position, and a rod with a hole slidably inserted into the cylinder body 65. 66 and a pin (not shown) inserted into the hole of the cylinder main body 65 and the hole of the rod 66 that are coincident with each other. The cylinder body 65 of the second fixing means 62 is rotatably attached to an intermediate portion of the arm body portion 21 of the turning arm body 5. The rod 66 of the second fixing means 62 is rotatably attached to the movable machine frame 6.

  Next, the operation and the like of the farm work machine 1 will be described.

  At the time of the forward work in which the earth work part 2 performs the dashing work by the forward traveling of the tractor, as shown in FIGS. 1 and 2, the movable machine frame 6 that supports the earth work part 2 is fixed at the forward work position, The embankment body 31, the ridge forming body 32 and the heel upper surface processing body 33 constituting the working unit 2 are set to a predetermined forward working state. In the state shown in FIGS. 1 and 2, the earth work unit 2 is in the standard work posture.

  Then, when the tractor moves forward with the embankment body 31, the ridge forming body 32, and the heel surface processing body 33 set in a predetermined forward operation state, the agricultural work machine 1 moves in the traveling direction (forward), and the tractor The power from the side is transmitted to the earth work unit 2 through the input shaft 17, the power transmission shaft body 45, the intermediate input shaft 24 and the transmission means 25.

  When the power from the tractor side is transmitted to the earth working unit 2, each of the embankment body 31, the eaves forming body 32, and the eaves upper surface treatment body 33 rotates in a predetermined direction. Then, the upper surface of the old paddy is pre-processed by the paddle surface processing body 33, the soil for paddy coating is cultivated by the embankment body 31 and raised to the main paddle, and the soil raised on the main paddle is the paddle forming body. It is compacted at 32, and a new song is formed.

  Further, at the end of the field so that there is no unpainted area, during the reverse work (at the time of return work) in which the soil work part 2 performs the filling work by the backward running of the tractor, as shown in FIG. The movable machine frame 6 supporting 2 is fixed at the retreat work position, and the embankment body 31, the reed formation body 32, and the reed upper surface treatment body 33 constituting the earth work unit 2 are set in a predetermined retreat work state. That is, from the forward working state shown in FIG. 2, the earth working unit 2 is rotated by approximately 180 degrees while changing the position from the right position to the left position.

  Then, when the tractor is moved backward in this state, the agricultural work machine 1 moves in the traveling direction (rearward), and the upper surface of the old paddle is pre-processed by the paddle surface processing body 33 as in the forward moving work. The soil for coating is cultivated by the embankment body 31 and raised to the main fence, and the soil raised to the former fence is compacted by the ridge formation body 32 to form new ridges.

  Further, during non-working such as when transporting the agricultural machine 1 to a storage location such as a warehouse, the movable machine frame 6 is fixed at the storage non-working position as shown in FIG. And the upper surface processing body 33 is set to a predetermined storage non-working state. At this time, the embankment body 31, the ridge forming body 32, and the heel surface processing body 33 are stored in the rear region of the tractor without protruding to the tractor side.

  And according to the said agricultural working machine 1, one end side is connected to the input shaft 17 by the side of the fixed machine frame 4 provided in the fixed machine frame 4 rotatably, and it is provided in the rear end part of the rotation arm body 5 rotatably. A power transmission shaft body 45 having the other end connected to the intermediate input shaft 24 on the movable machine frame 6 side. The input shaft 17, the power transmission shaft body 45, and the intermediate input shaft 24 are all on substantially the same plane. Therefore, unlike conventional farming machines, it is not necessary to fold both ends of the power transmission shaft body 45 that transmits power from the input shaft 17 to the intermediate input shaft 24 at a large folding angle, improving durability and cost. Reduction and the like can be achieved.

  For example, by providing the single joint portion 48 at the end of the power transmission shaft body 45 on the intermediate input shaft 24 side of the transmission shaft portion 46, the cost can be reduced. Further, for example, even when wide angle constant velocity joint portions are provided at both end portions of the transmission shaft portion, since the folding angle is small, durability can be improved.

  In particular, since the longitudinal direction of the arm main body 21 of the rotating arm 5 is substantially coincident with the axial direction of the intermediate input shaft 24 in plan view, the end of the power transmission shaft 45 on the side of the intermediate input shaft 24 can be easily formed. Therefore, the cost of the power transmission shaft body 45 can be surely reduced as compared with the case where both end portions are wide angle constant velocity joint portions.

  In addition, the earth work part 2 is not limited to the thing which performs a varnishing work, The thing etc. which do a digging work etc. may be sufficient.

  Moreover, you may enable it to adjust offset of the horizontal direction position of the earth work part 2 of a forward work state.

  Furthermore, the farm work machine 1 is not limited to the one that moves the movable machine frame 6 by manual operation, and the movable machine frame 6 may be moved by power from a drive unit such as a hydraulic cylinder or a motor.

It is a side view at the time of advance work of one embodiment of the agricultural working machine of the present invention. It is a top view of an agricultural working machine same as the above. It is a top view at the time of storage non-working of an agricultural working machine same as the above. It is a top view at the time of the reverse operation | work of an agricultural working machine same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Farming machine 2 Soil working part 4 Fixed machine frame 5 Rotating arm body 6 Movable machine frame
11 Three-point connecting part that is a traveling car connecting part
17 Input shaft
24 Intermediate input shaft
45 Power transmission shaft

Claims (2)

A farm working machine that performs soil work in the soil working part while moving by traveling of a traveling vehicle,
A fixed machine frame having a traveling vehicle connecting portion;
The earth work unit moves forward based on forward travel of the traveling vehicle, the forward work position, the earth work unit performs soil work based on backward travel of the traveling vehicle, and the earth work unit A movable frame that supports the earth working unit, and is movable to a retracted non-working position located behind the traveling vehicle;
A power transmission shaft for transmitting power from the input shaft on the stationary machine frame side to the intermediate input shaft on the movable machine frame side;
The input shaft, the power transmission shaft body, and the intermediate input shaft are all located on substantially the same plane. The movable machine frame is rotatably connected to the other end side of the rotating arm body, one end side of which is rotatably connected to the fixed machine frame,
The agricultural machine according to claim 1, wherein the longitudinal direction of the rotating arm body substantially coincides with the axial direction of the intermediate input shaft in plan view.

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