JP2020054257A - Levee formation machine - Google Patents

Abstract

To provide a levee formation machine which can be produced at low manufacturing cost, can suppress a bending angle of a universal joint from becoming excessive, and can be attached to various kinds of travel machine bodies at a preferable weight balance.SOLUTION: A levee formation machine comprises: a machine frame 1 attached to a travel machine body; a rotatable frame part 2 whose one end side is supported to the machine frame 1 so as to turn freely, and which can be extended/shrunk in a longitudinal direction; a work part W rotatably supported to the other end side of the rotatable frame part 2; a soil banking part 4 in which the work part W comprises a cultivation unit 41 for cutting soil of an original levee; and a levee formation disk body 5 which is provided on a rear part of the soil banking part 4 and presses the banked soil banked by the soil banking part 4 by rotation of the disk body for forming a levee. The rotatable frame body 2 comprises: a first rotatable frame 21 whose one end side is supported to the machine frame 1 so as to turn freely; and a second rotatable frame 22 which is attached to the first rotatable frame 21 so that a position thereof can be changed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a ridge forming machine mounted on a traveling machine body. More specifically, the present invention relates to a ridge forming machine capable of adjusting a support frame length for supporting a ridge forming work unit.

A ridge forming machine disclosed in Patent Literature 1 is disclosed as a ridge forming machine for forming a ridge by offsetting the ridge forming work unit to one side in the traveling direction of a traveling machine body.
This ridge forming machine has an embankment section for supplying the soil in an embankment state, and a molding section for pressing the soil embanked in the embankment section to form a ridge, and the molding section is in a state where the soil is embanked in the embankment section. It is said that this is a ridge forming machine provided with an upper roller that passes while rotating over a ridge forming portion that has been set, and a conical disk. Moreover, the ridge forming work part constituted by the embankment part and the forming part is a ridge forming machine capable of performing an operation of offsetting to one side in the traveling direction and inverting the other side.

JP 2017-139976 A

When the work machine is mounted on the traveling body and travels, it is desirable from the viewpoint of running stability that the load applied to the grounding surfaces of the plurality of wheels of the traveling body is properly distributed. Therefore, it can be said that it is preferable that the work machine mounted on the traveling machine be lightweight or that the work machine be arranged close to the traveling machine, that is, the center of gravity of the work machine be close to the traveling machine.
When the ridge forming machine described in Patent Document 1 is mounted on traveling bodies of different body sizes, it can be mounted with a suitable weight balance for one traveling body, but can be mounted on the other traveling body. A situation occurs in which the weight balance is deteriorated. If working machines of different dimensions are manufactured in accordance with a large number of traveling machines, there is a problem that the manufacturing cost, which is directly related to the selling price, rises.
Further, the ridge forming machine described in Patent Document 1 can move the ridge forming work part to the side in the traveling direction of the traveling machine body by the turning operation of the support frame, but it is more than the set movement range. When the ridge forming operation unit is moved to the side in the traveling direction, the bending angle of the universal joint that drives the ridge forming operation unit increases, and there is a problem that the universal joint is damaged by the driving torque.

  Therefore, the present invention has been made in view of the above problems, and while suppressing the manufacturing cost, can be mounted on various traveling bodies with a suitable weight balance without increasing the bending angle of the universal joint. An object is to provide a ridge forming machine.

  In order to achieve the above object, one embodiment of the present invention provides a machine frame mounted on a traveling machine body, a first turning frame rotatably supported by the machine frame, and a first turning frame. A second revolving frame mounted so as to be repositionable, a ridge forming work section rotatably supported at an end of the second turning frame, and the ridge forming work section cuts the soil of the original ridge. A ridge forming machine equipped with an embankment provided with a tilling device to perform, and a ridge forming disc body which is positioned behind the embankment and presses while rotating the soil filled by the embankment to form a ridge. The gist is that there is.

  Advantageous Effects of Invention According to the present invention, it is possible to provide a ridge forming machine that can be mounted on various traveling bodies with a suitable weight balance without suppressing the manufacturing cost and increasing the bending angle of the universal joint.

It is a top view of a ridge forming machine which is an embodiment of the present invention in the state of advancing work. It is a front view of a ridge forming machine which is an embodiment of the present invention in a state of advancing work. It is the top view which expanded the rotation frame part of the ridge forming machine which is embodiment of this invention in the advance operation state. It is the front view which expanded and showed the front of the rotation frame part of the row molding machine which is embodiment of this invention typically. In the plan view showing the transmission part of the ridge forming machine according to the embodiment of the present invention in the forward working state, the parts indicated by two-dot chain lines are provided to show the positional relationship between the rotating frame part and the support frame. is there. FIG. 2 is a plan view showing the position of the center of gravity of the ridge forming machine according to the embodiment of the present invention, in which (a) is a forward working state, (b) is a retracted state, and (a) is a backward working state. 1 is a part view showing a rod of a first modification of a ridge forming machine according to an embodiment of the present invention, wherein (a) is a plan view of the rod and (b) is a side view of the rod. It is the top view which expanded the rotation frame part of the 2nd modification of the row molding machine which is embodiment of this invention. It is the side view which expressed typically the side which expanded the rotation frame part of the 2nd modification of the row molding machine which is embodiment of this invention.

Next, an embodiment of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts may be denoted by the same or similar reference numerals. The drawings used in the description are schematic, and the relationship with the dimensions of each part may be different from the actual ones.
In addition, various changes can be made to the technical idea of the present invention within the technical scope defined by the claims described in the claims.

1 to 6 show a ridge forming machine A according to an embodiment of the present invention.
In the description, the right side of FIG. 1 is described as the front in the work advance direction, the left side is the rear in the work advance direction, the upper side is the left direction with respect to the work advance direction, and the downward direction is the right direction with respect to the work backward direction.

  The ridge forming machine A shown in FIG. 1 is mounted on a three-point link mechanism (not shown) provided on the traveling body, and forms a ridge in a field as the traveling body advances. The ridge forming machine A includes a machine frame 1 provided on the traveling machine body side, a rotating frame portion 2 having one end side rotatably provided in the machine frame 1 in a horizontal direction, and a rotating frame portion 2 provided on the other end side of the rotating frame portion 2. A work unit W rotatably provided is located. The working unit W can be positioned offset from the center of the machine frame 1 to the left and right sides by the rotating frame unit 2.

  On the front side in the traveling direction at the time of the work of the work part W, an embankment part 4 which excavates part of the soil of the rice field and the original ridge and fills up the side surface and the upper surface of the original ridge is located. The embankment raised by the embankment portion 4 is compacted while being rotated and driven by a horizontal rotation axis perpendicular to the traveling direction, which is located on the rear side in the traveling direction at the time of the operation of the working section W, and a new ridge is placed on the original ridge. Is provided.

  In this embodiment, when the rotating frame 2 is swung to the right in the forward direction of the traveling body to position the work unit W on the right side, it is possible to form the ridges of the fields as the traveling body advances. it can. Conversely, when the rotating frame unit 2 is rotated to position the working unit W on the left side, the ridge of the field can be formed together with the reverse movement of the traveling body.

  A mounting portion 10 for mounting the ridge forming machine A to the three-point link mechanism of the traveling body is located at a front portion of the machine frame 1. The ridge forming machine A is attached to a three-point link mechanism D at the rear of the traveling machine via a mounting section 10 and used. The mounting portion 10 is provided with one top bracket 101 projecting forward and upward at the center of the machine frame 1, and a top link pin 102 is provided at the front end of the upper portion of the top bracket 101. I have. Similarly, a lower bracket 103 protruding from the machine casing 1 so as to face left and right forward and downward, and lower link pins 104, 104 are attached to the front ends of the lower bracket 103, respectively. With these top link pins 102 and lower link pins 104, the ridge forming machine A is connected to and mounted on a three-point link mechanism of the traveling machine body.

  A first turning base 12 is located behind the machine casing 1. The first rotation base 12 is a U-shaped member as viewed from the side as shown in FIG. At the center on the left and right sides with respect to the traveling direction of the turning base 12, fulcrum holes 121, 121 are provided so as to penetrate the opposing surfaces of the U-shaped member in a vertical direction in a side view. One end side of the rotating frame portion 2 is attached between the fulcrum holes 121.

  The rotating frame portion 2 is attached to the first rotating frame 21 so as to be rotatable on the rear portion of the machine frame 1, and is slidable in the longitudinal direction of the first rotating frame 21. Is constituted by a second rotating frame 22 provided in the second rotating frame.

The first rotating frame 21 is a long member. One end of the first rotating frame 21 is positioned between the fulcrum holes 121, 121, and the first rotating shaft 211 is passed through the fulcrum holes 121, 121. The first rotation shaft 211 is provided to be rotatable left and right in the traveling direction. In the embodiment to be described, the first rotating frame 21 uses a square pipe that is a hollow member, but a square rod may be used.
At the other end of the first rotating frame 21, an attachment hole 212 for attaching the second rotating frame 22 is provided. In this embodiment, the mounting holes 212 are provided at two locations in the vertical direction, close to each other, and are formed as mounting holes 212a and 212b in order from the side closer to the first rotation shaft 211. A second rotating frame 22 is attached to the other end of the first rotating frame 21.

The second rotating frame 22 is a hollow member that is long in the front-rear direction, and is provided with the first rotating frame 21 inserted into a hollow portion on one end side. In the described embodiment, a square pipe is used. By inserting the first rotating frame 21 into the hollow portion of the second rotating frame 22, the second rotating frame 22 can slide and move in the longitudinal direction with respect to the first rotating frame 21. .
Further, on one end side of the second rotating frame 22, a mounting hole 221 is provided so as to penetrate in the same direction as the mounting hole 212 provided in the first rotating frame 21. A plurality of mounting holes 221 are provided, and are provided at four locations in this embodiment. The mounting holes 221 are a mounting hole 221a, a mounting hole 221b, a mounting hole 221c, and a mounting hole 221d in order from the side closer to the first rotation shaft 211.

  By passing the locking member 23 by aligning any two of the mounting holes 221a, 221b, 221c, and 221d provided in the second rotating frame 22 with the mounting holes 212a and 212b of the first rotating frame 21. The second rotating frame 22 can be fixed to and released from the rotating frame 21. In this embodiment, the locking members for fixing the second rotating frame 22 are bolts and nuts, but the effect obtained by passing the rod-shaped pin is the same. When the locking member 23 is removed, the fixing is released, and the second rotating frame 22 can be moved again in the longitudinal direction with respect to the first rotating frame 21.

  The second rotating frame 22 can be extended and contracted in the longitudinal direction with respect to the first rotating frame 21, but its position is determined by selecting the mounting holes 221a, 221b, 221c, and 221d that match the mounting holes 212a and 212b. It is determined by passing the locking member 23. In the embodiment shown in FIGS. 3 and 4, the length of the rotating frame portion 2 can be adjusted in three stages, and is set to a shortened position, an intermediate position, and an extended position. The extended position is formed by fixing the hole position of the second rotating frame 22 to the mounting holes 212a and 212b as the mounting holes 221a and 221b through the locking member 23. The intermediate position is formed by fixing the hole positions of the second rotating frame 22 to the mounting holes 212a and 212b through the locking members 23 with the mounting holes 221b and 221c. The shortened position is formed by fixing the hole position of the second rotating frame 22 to the mounting holes 212a and 212b with the mounting members 221c and 221d through the locking member 23.

  In the embodiment, the mounting holes 212 of the first rotating frame 21 are provided at two locations, and the mounting holes 221 of the second rotating frame 22 are provided at four locations. Even if the number of the mounting holes 212 is one and the number of the mounting holes 221 of the second rotating frame 22 is three, the adjustment can be performed in three stages, and the effect is not changed. Further, when changing the number of adjustment steps of the length of the rotating frame portion 2, the number of the mounting holes 221 may be changed, and more fine adjustment can be performed.

  The other end of the second rotating frame 22 attached to the first rotating frame 21 is rotated about the first rotating shaft 211 by making the length of the rotating frame portion 2 changeable. Can be selectively changed. A working unit W is pivotally attached to the other end of the second rotating frame 22 which is the other end of the rotating frame unit 2, and the working unit W is used to move the second rotating frame 22. The position can be changed accordingly. The working unit W will be described later.

  The rotating frame section 2 can be driven to turn left and right with respect to the traveling direction by the driving means 24. The driving means 24 is a cylinder which can be driven to expand and contract, and in the embodiment to be described, the piston rod is a cylinder which can be driven to expand and contract by hydraulic pressure generated in the driving means 24 using electricity as a power source.

  One end of the driving means 24 is provided on the right side of the first rotation base 12 so as to be rotatable in the left-right direction. The other end of the driving means 24, that is, the tip of the piston rod is located between the rectangular mounting plates 25, which are fixed to the side of the second rotating frame 22 so as to face up and down. The mounting plates 25, 25 have the same number of holes 251 as the number of length adjustment steps of the rotating frame portion 2. In the embodiment to be described, there are three holes 251, and the holes 251 a, 251 b, and 251 c are arranged in order from the side closer to the first rotation shaft 211. The pitch of the holes 251 is provided to be the same as the pitch for adjusting the length of the rotating frame 2. The other end of the driving means 24 located in the hole 251 is attached together with the hole 251 by a bolt / nut 252. Then, the rotating frame unit 2 can be driven to rotate in the left-right direction as the driving unit 24 expands and contracts. The driving means 24 can be attached to the bolt / nut 252 by a pin.

  Since the mounting plates 25 and 25 are fixed to the second rotating frame 22 that is movable with respect to the first rotating frame 21, the mounting positions of the driving means 24 and the holes 251 are different from those of the second rotating frame 22. Is changed with the movement of. The hole 251a is used when the position where the rotating frame part 2 is expanded and contracted is the extension position, the hole 251b is used when the position is the intermediate position, and the hole 251c is used when the position is the contraction position. As described above, by changing the mounting position of the driving means 24 and the hole 251 in accordance with the expansion and contraction of the rotating frame 2, the rotating angle and the rotating width of the rotating frame 2 remain unchanged, and Only the longitudinal length of the part 2 can be changed.

  The drive unit 24 is not limited to the cylinder using electricity as a power source described in this embodiment. Even if a hydraulic pressure generated at another distant place is sent through a pipe or the like and a cylinder that expands and contracts the piston rod is used, the effect of rotating the rotating frame portion 2 remains unchanged.

  A working unit W is attached to the other end of the second turning frame 22 that is the other end of the turning frame 2 that can be turned by the driving means 24. The working unit W includes a support frame 3, an embankment 4, and a ridge forming disk 5.

  The support frame portion 3 is provided with a support member 30 for connecting to the rotating frame portion 2. The support member 30 is a long member, and the support member 30 of the embodiment to be described uses a square pipe. One end of the support member 30 is disposed so as to be sandwiched between the U-shaped second rotation bases 26 fixed to the other end of the second rotation frame 22 in a side view shown in FIG. The support member 30 can be moved in the left-right direction by inserting the second rotation shaft 31 into a hole provided through one end of the support member 30 and a hole provided in a direction perpendicular to the second rotation base 26. It can rotate freely.

  An arm 32 is provided above the second rotation base 26 coaxially with the second rotation shaft 31. The arm 32 is rotatable around the second rotation shaft 31. The arm 32 is a member that is long in the left-right direction and is provided near the center at a pivot point. One end of the arm 32 is provided to extend leftward in the forward direction with respect to the rotation fulcrum, and the other end of the arm 32 is provided to extend rightward in the traveling direction with respect to the rotation fulcrum.

  At one end of the arm 32, a mounting shaft 321 is provided facing downward, and one end of a rod 33 is rotatably mounted on the mounting shaft 321. The other end of the rod 33 is attached to an attachment shaft 122 provided near the first rotation base 12. The length of the rod 33 can be adjusted. In this embodiment, an inner pipe 331 provided at each end of the rod 33 and an outer pipe 333 are provided to connect the inner rods 331 and 331. . The length of the rod 33 can be adjusted by a male screw provided on the inner rods 331 and 331 and a female screw provided on the outer pipe 333. When the length of the rotating frame portion 2 is changed, the length is adjusted by rotating the outer pipe 333 by an operator.

  Each between the first rotating shaft 211 and the second rotating shaft 31, between the second rotating shaft 31 and the mounting shaft 321, between the mounting shaft 321 and the mounting shaft 122, and between the mounting shaft 122 and the first rotating shaft 211, respectively. The distances are different and are provided on a non-parallel link mechanism. Due to the setting of the non-parallel link mechanism, a straight line connecting the second rotating shaft 31 and the mounting shaft 321 with the rotation of the rotating frame portion 2 in a plan view shown in FIG. It turns while changing the angle with respect to a straight line connecting the turning shafts 211.

  A link attachment portion 335 is provided on the other end of the arm 32, and one end of the first link 34 is attached to the link attachment portion 335, so that the first link 34 is rotatable in the left-right direction. The other end of the first link 34 is attached near the center of a second link 35 having one end rotatably attached to the side of the center in the longitudinal direction of the support member 30. Further, to the other end of the second link 35, a driving means 36 having one end rotatably mounted on the side of the other longitudinal end of the support member 30 is attached.

In this embodiment, the first link 34 and the second link 35 are both long members, and the first link 34 is set shorter than the second link 35. The driving means 36 uses a cylinder which can be driven to expand and contract like the driving means 24.
With the expansion and contraction operation of the driving means 36, the support member 30 moves through the first link 34 and the second link 35 to the left and right in the traveling direction with respect to the rotating frame 2 around the second rotating shaft 31 as a fulcrum. Rotation drive becomes possible.

  At the other end of the support member 30, a base member 37 for attaching the embankment portion 4 and the ridge forming disk 5 is fixed. The base member 37 is a plate member, and is installed with the plate surface facing downward from the other end of the support member 30. In the forward operation state shown in FIGS. 1 and 3, the normal to the plate surface of the base member 37 is oriented in the left-right direction. In the forward operation state, the embankment portion 4 is arranged in front of the base member 37.

The embankment part 4 is provided with a plurality of tilling claws 40 radially different from each other on a horizontal rotation axis and a tilling device 41 provided so as to protrude toward the former ridge side, and a soil leached by the tilling nails 40 on the former ridge. A cover body 42 is provided to guide to the side. The tilling device 41 having the tilling claws 40 is driven to rotate by power from the traveling machine body and excavates soil on a rice field and a part of the original ridge slope and the upper surface of the original ridge. The original ridge slope can be excavated in a stepwise manner by the turning radius of the tilling claw 40 of the tilling device 41. The excavated soil is blown to a ridge forming disc body 5 located on the original ridge side and behind the embankment portion 4 to form an embankment. The ridge forming disk body 5 will be described later.
The tillage device 41 in this embodiment is provided at two places. A first tillage device 41a for excavating the soil on the rice field and the former ridge slope, and a second tillage device 41b for excavating the soil on the upper surface of the former ridge which is located closer to the ridge forming disc body 5 than the first tilling device 41a. It consists of.

  A cover 42 is attached so as to cover the embankment 4. The cover body 42 is provided by the tilling claw 40 driven by the rotation of the tilling device 41 so that soil is not scattered around when tilling the original ridge and the rice field. The ridge side on the side of the cover body 21 is opened in order to form the embankment on the ridge side surface and the ridge upper surface by tilling the tilling claws 40. The rear side of the cover body 21 covers a part of the front side of the ridge forming disk body 5.

  As shown in FIG. 2, the ridge forming disk body 5 located behind the embankment portion 4 includes a cylindrical upper surface roller 52 for forming the ridge upper surface and a forming disk 51 for forming the ridge side surface. The ridge forming disk body 5 rotates faster than the traveling speed around a rotation center axis perpendicular to the traveling direction, and advances and compacts while slip rotating the soil embanked by the embankment portion 4.

  The forming disc 51 is provided with a plurality of divided pieces overlapping each other in a truncated cone shape so as to gradually increase the radius from the ridge side surface to the rice field side. A cylindrical upper surface roller 52 oriented in the horizontal direction is attached to the top of the forming disk 51 so as to protrude toward the ridge side. The forming disk 51 and the upper roller 52 are driven to rotate together with the tilling device 41 of the embankment 4. With the forming disk 51 and the upper surface roller 52 that rotate with the power of the traveling machine body and their own weights, the embankment formed by the embankment portion 4 is rubbed against the original ridge and pressed together to consolidate the embankment.

  Here, a driving method of the embankment portion 4 and the ridge forming disk body 5 will be described. Rotational power, which is a driving power source, is obtained from a PTO shaft (not shown) behind the traveling body. The rotational power of the PTO shaft is transmitted via a universal joint (not shown) to an input shaft 13 which is provided below the mounting portion 10 at one of the left and right central portions in the traveling direction at the center in the traveling direction and directed toward the traveling body.

The input shaft 13 is rotatably held by a bearing 131 provided on the machine frame 1, and the other end is provided so as to protrude from the bearing 131 toward the side opposite to the traveling body. A universal joint 14 is attached to the other end of the input shaft 13.
The universal joint 14 has universal joints 142 on both ends, and an intermediate shaft 141 located between the universal joints is provided so as to be able to expand and contract. One end of the universal joint 14 is connected to the input shaft 13, and the other end is connected to the working unit input shaft 15.

  The working unit input shaft 15 is provided above the base member 37 so as to protrude toward the second rotation shaft 31. In the forward operation state and the reverse operation state, the working unit input shaft 15 is moved leftward and rightward with respect to the traveling direction. The working unit input shaft 15 is rotatably held by a bearing 151, and transmits the rotational power transmitted from the PTO shaft to the transmission case 16. In the case of this embodiment, the transmission case portion 16 is provided with three transmission cases, and receives the power from the working unit input shaft 15 and transmits the power to the second tillage device 41b of the embankment portion 4. A second transmission case 162 for transmitting power from the first transmission case 161 to the first tillage device 41a of the embankment portion 4, and a third transmission case 163 for transmitting power from the first transmission case 161 to the ridge forming disk body 5. doing. In addition, a chain (not shown) and a sprocket (not shown) in the first to third transmission cases 161, 162, 163 transmit and transmit the rotational power obtained from the working unit input shaft 15 while changing the speed. One end of each of the first to third transmission cases 161, 162, 163 commonly passes through a transmission shaft 164, from which power to the second tillage device 41 b is taken out, and the embankment portion 4 and the ridged disk 5 are taken out. Power is distributed to

  With such a configuration, the rotational power of the PTO shaft is transmitted to the embankment portion 4 and the ridge forming disk body 5 via the input shaft 13, the universal joint 14, the working unit input shaft 15, and the transmission case portion 16, and each of them is transmitted to the other. Drive in rotation. The rotating shaft of the ridge forming disk body 5 is provided in parallel with the working unit input shaft 15 to efficiently transmit the distributed power.

  As described above, the rotating frame portion 2 is provided so as to be adjustable to the shortened position, the intermediate position, and the extended position. For this reason, the working unit W can be moved to the shortened position, the intermediate position, and the extended position in the same manner as the rotating frame portion 2 along with the expansion and contraction movement in the longitudinal direction of the rotating frame portion 2. In the forward working state shown in FIGS. 1, 3 and 5, the rotating frame portion 2 has been rotated rightward and backward in the forward direction. A universal joint 14 is attached so as to connect the input shaft 13 arranged in the front and rear direction of the traveling direction and the working unit input shaft 15 arranged in the left and right direction of the traveling direction. The intermediate shaft 141 is provided substantially parallel to the rotating frame 2 in plan view. Therefore, when the rotating frame 2 is moved to the shortened position, the intermediate position, and the extended position, the relative angle between the input shaft 13 and the working unit input shaft 15 remains unchanged, and the input shaft 13 and the working unit input shaft The distance of each other changes. In the universal joint 14, only the intermediate shaft 141 expands and contracts, and the bending angles of the universal joints 142, 142 do not change. Since the bending angles of the universal joints 142, 142 do not change, the universal joint 14 can stably transmit power and reduce problems such as breakage.

  The work unit W can change its posture to a forward operation position, a storage position, and a reverse operation position by the rotation of the rotation frame unit 2 and the support member 30. The forward working position is a state in which the working unit W is positioned on the right side of the traveling machine body as shown in FIG. By moving the traveling body forward in this state, a ridge on the right side in the traveling direction of the traveling body is formed. The storage position is a posture in which the working unit W shown in FIG. 6B is located behind the traveling body in plan view, and is used when the traveling body is moved other than during the ridge forming operation. The reverse work position is a state in which the working unit W shown in FIG. 6C is located on the left side of the traveling body in plan view, and the traveling body is moved backward to form a ridge on the left side of the traveling body.

  When the working unit W is changed from the forward working position to the retracted position, the driving unit 24 disposed near the rotating frame 2 is extended and retracted to rotate the rotating frame 2 from right to left in the forward direction of the traveling body. Move. Then, the working unit W also rotates integrally with the rotating frame unit 2, so that the working unit W is located behind the traveling body. As shown in the plan view 〇, the rotation drive shafts of the embankment portion 4 and the ridge forming disk body 5 at the storage position face rearward so that the ridge forming machine A as a whole does not protrude greatly from the side of the traveling machine. Has become. At this time, the end of the working unit input shaft 15 faces the front right side, and the other end of the universal joint 14 also moves with the rotation of the rotating frame unit 2.

When changing to the reverse work position, the work unit W is once set to the storage position and then performed. The change to the reverse working position is performed by rotating the working unit W, which is in the storage position state, around the second rotating shaft 31 by the expansion and contraction operation of the driving unit 36. Then, the working unit W is located on the left side of the traveling machine body, and the rotation drive shafts of the embankment unit 4 and the ridge forming disk unit 5 at the storage position are oriented in a direction orthogonal to the traveling direction. Further, with the rotation of the working unit W, the end of the working unit input shaft 15 also faces rightward in the traveling direction, and the other end of the universal joint 14 moves with the rotation of the rotating frame unit 2. The intermediate shaft 141 is set in parallel with the rotating frame 2 in plan view.
In this state, when the embankment portion 4 and the ridge forming disk body 5 are driven to rotate and the traveling machine is moved backward, the ridge on the left side of the traveling machine can be formed. In addition, the offset amount of the working unit W with respect to the traveling direction of the traveling machine at the reverse working position is set to be the same as the offset amount of the working unit W with respect to the traveling direction of the traveling machine at the time of the forward working position. By doing so, the operator can operate the traveling body without feeling uncomfortable in both the forward operation and the reverse operation, and thus further improvement in safety can be expected.

  The position of the working part W in the forward working state or the backward working state is determined by setting the bottom surface formed by the bottom of the truncated conical portion of the ridge forming disc body 5 to the left or right with respect to the traveling direction of the traveling machine body. It is desirable to be located at the same position as the lateral position or slightly outside. By arranging in this way, the balance and workability of the traveling machine body when the ridge forming machine A is mounted can be kept good.

  Depending on the size of the traveling body to be mounted, when the bottom surface formed by the truncated cone-shaped hem of the ridge-shaped disc body 5 from the outermost side of the traveling body enters inside from the outermost end face of the traveling body. The position of the rotating frame 2 in the longitudinal direction is adjusted. By adjusting the position of the rotating frame unit 2 in the longitudinal direction, the position of the working unit W with respect to the traveling machine body can be made appropriate. Also, in the actual ridge forming operation, since the combination of the ridge forming machine A and the traveling machine does not frequently change, only the adjustment of the rotating frame portion 2 is adjusted in advance before the ridge forming operation. Work can be done without delay.

Further, in this embodiment, since the position of the working unit W is limited to the three positions of the forward working position, the storage position, and the backward working position, the direction perpendicular to the traveling direction of the working unit W in the forward working or the backward working. Adjustment of the position is not required. This simplifies the structure and members for supporting the working unit W on the rotating frame 2, thereby reducing the manufacturing costs.
Further, since the position of the working portion W is limited, it is possible to prevent the universal joint 142 from inadvertently increasing the bending angle and prevent the universal joint 14 from being damaged. Furthermore, even if the position of the working unit W is changed by adjusting the position of the rotating frame 2 in the longitudinal direction, the intermediate shaft 141 only expands and contracts with the movement of the rotating frame 2. Therefore, since the bending angle of the universal joint 142 does not change, a setting error due to the position adjustment of the rotating frame 2 is eliminated.

  The position of the center of gravity of the ridge forming machine A will be described. Since the working part W occupies the majority of the total weight of the ridge forming machine A of this embodiment, the center of gravity of the ridge forming machine A is located on the working part W side. The position of the center of gravity of this embodiment is located slightly closer to the ridge-shaped disk body 5 than the second transmission case 162 and the transmission shaft 164 in a plan view shown in FIG. 6. Further, since the ridge forming machine A has a structure in which the working portion W is supported at the tip of the rotating frame portion 2, the shortened position, the intermediate position, and the extended position when the position of the rotating frame portion 2 is adjusted in the longitudinal direction. At each of the positions, the position of the center of gravity changes. The lines drawn by two-dot chain lines shown in FIG. 6 indicate the positions of the respective working units W when the rotating frame unit 2 is in the intermediate position and the extended position. The working unit W is closest to the input shaft 13 and the first rotating shaft 211 at the shortened position of the rotating frame portion 2, and is farthest at the extended position. This is similarly provided in any state of the forward working position, the storage position, and the reverse working position.

  In the plan view shown in FIG. 6, the position of the center of gravity when the rotating frame portion 2 is in the contracted position is shown as G1, the position of the center of gravity when the rotating frame portion 2 is in the intermediate position is G2, and the position of the center of gravity when the rotating frame portion 2 is in the extended position is shown as G3. In each of the forward working position, the retracted position, and the reverse working position, the center of gravity G1 when the rotating frame 2 is in the shortened position is more input shaft than the center of gravity G2 when the rotating frame 2 is in the intermediate position. Close to 13. Similarly, the center of gravity G2 when the rotating frame 2 is at the intermediate position is closer to the input shaft 13 than the center of gravity G3 when the rotating frame 2 is at the extended position.

  Then, the center of gravity position of the ridge forming machine A when mounted on the traveling body by the mounting portion 10 located near the input shaft 13 is at an intermediate position where the rotating frame portion 2 is in the extended position and in a retracted position than in the intermediate position. Since the time can be closer to the traveling body, stability during traveling can be improved. More specifically, the forward and backward working positions are expected to improve the stability of the traveling body to the left and right in the traveling direction, and the storage position is expected to improve the stability of the traveling body to the front and rear in the traveling direction. it can. This indicates that the traveling body can stably travel, reduces the careless swinging of the traveling body, and facilitates the operation of the traveling body by the operator.

  The handling in the actual operation of the ridge forming machine A of this embodiment will be described. When mounted on the traveling body and set to the forward working position or the reverse working position, confirm that the truncated conical skirt portion of the ridge forming disk body 5 is located at the same or slightly outside of the left and right lateral ends with respect to the traveling direction of the traveling body. do. At this time, when the truncated cone bottom is located inside the left and right lateral ends with respect to the traveling direction of the traveling body, the rotating frame 2 is extended in the longitudinal direction, and the ridge forming disk body 5 for the traveling body is extended. Adjust the position of. Conversely, when the truncated cone bottom of the ridge forming disk body 5 is located significantly outside the left and right lateral ends with respect to the traveling direction of the traveling machine body, the rotating frame portion 2 is shortened in the longitudinal direction, and Adjust the position.

  It is not possible to adjust the position of the working unit W in the left-right direction with respect to the traveling direction each time during the ridge forming operation by adjusting the offset amount of the ridge forming disk body 5 to the side of the traveling machine body to the desired amount in advance. Disappears. Therefore, the number of parts operated by the worker on the ridge forming machine A is reduced, and the convenience is improved. Since the traveling machine on which the ridge forming machine A is mounted is not changed during the ridge forming operation, once the turning frame portion 2 is adjusted, the turning frame portion 2 does not need to be adjusted during the ridge forming operation. . Further, even if the traveling type is changed to another traveling body after the ridge forming operation, if the vehicle size is the same, the offset amount of the ridge forming disc body 5 to the side with respect to the traveling body is the same. Requires no adjustment.

  Further, since the position of the working unit W is limited to the three positions of the forward working position, the storage position, and the backward working position, the member on which the working unit W rotates with respect to the rotating frame unit 2 can be simplified. Therefore, unnecessary members for rotating the working unit W can be eliminated, and the manufacturing cost of the ridge forming machine A can be suppressed.

  In addition, even if the rotating frame 2 is moved and adjusted in the longitudinal direction in the forward working position and the backward working position, the bending angle of the universal joint 14 does not change. The transmission efficiency does not change. Therefore, the power can be stably transmitted to the embankment portion 4 and the ridge forming disk body 5 of the working portion W, and the universal joint 14 can be prevented from being damaged due to an excessive bending angle.

The case where the ridge forming operation is performed by the ridge forming machine A will be described.
The rotation drive shafts of the embankment portion 4 and the ridge forming disk body 5 in the forward operation or the reverse operation are respectively oriented horizontally and in a direction perpendicular to the traveling direction. The embankment portion 4 is located at the tip of the traveling body in the traveling direction, and the ridge forming disk 5 is located behind the embankment portion 4. As the traveling body advances in the traveling direction, the cultivation device 41 of the embankment 4 that is rotationally driven cultivates the soil on the rice field, the ridge side surface, and the ridge upper surface portion. At the same time, the cultivated soil is raised behind the embankment portion 4 and the soil is bounced off toward the ridge forming disk body 5 side. The ridge forming disk body 5 forms a ridge by pressing the embankment formed in the embankment portion 4 and the sprung soil while rotating the embankment so as to apply it to the original ridge. In addition, since the own weight of the working portion W presses the embankment through the ridge forming disk body 5, the formed ridge can be pressed more strongly, and a smooth and strong ridge is formed. When moving the traveling machine to another place after completing the ridge forming operation, the traveling unit is moved after the working unit W is in the storage position.

A first modification will be described with reference to FIG.
The method of adjusting the length of the rod 33 of the above-described embodiment using the screws provided on the two inner rods 331 and the one outer pipe 333 has been described. However, the length adjustment is not restricted to this method. As shown in FIG. 7, the rod 33a is composed of one inner rod 331a and one outer pipe 333a, a plurality of through holes are provided in each of them, and a locking member 334a such as a pin is inserted into each of the holes. Alternatively, a method of restricting each other's movement may be used. In this method, when the rotating frame 2 is adjusted stepwise, it is only necessary to insert the locking member 334a into a preset through-hole, so that an improvement in convenience for the operator can be expected.

A second modification will be described with reference to FIGS.
Although the rotating frame portion 2 of the embodiment has been described with the method of adjusting the length in the longitudinal direction stepwise by the plurality of mounting holes 212 and 221, the stepless adjustment is performed as shown in FIGS. 8 and 9. In the rotatable frame portion 2a of a possible configuration, a portion drawn by a two-dot chain line indicates a position when the rotatable frame portion 2a is extended. In the second modification, a first mounting holder 271 is provided on the first rotating base 12a, a second mounting holder 272 is provided on the second rotating frame 22a, and the first mounting holder 271 and the second mounting holder 272 are mounted. The adjustment rod 28 is attached so as to pass. Both ends of the adjustment rod 28 are rotatably mounted, and do not hinder the rotation of the first rotation frame 21a.

  The adjusting rod 28 has a cylindrical outer pipe 282 having female threads formed at both ends, and is provided at both ends of the outer pipe 282. The adjusting rod 28 has a male thread at one end, and the other end has a first mounting holder 271 and a second mounting. It comprises an inner rod 281 attached to a holder 272. Therefore, when the outer pipe 282 is rotated, the adjusting rod 28 can be extended and contracted by the screws provided on the inner rod 281 and the outer pipe 282. By rotating the outer pipe 282, the second rotating frame 22a can move in the longitudinal direction with respect to the first rotating frame 21a. By rotating the outer pipe 282, the second rotating frame 22a can be set at an arbitrary position with respect to the first rotating frame 21a. After the movement is completed, the second rotating frame 22a is fixed by rotating and tightening the nut 283 attached to the inner rod 281. When moving the second rotation frame 22a, the fixing is released after the nut 283 is loosened.

  A mounting plate 25a for mounting a driving unit 24 for rotating the rotating frame 2a having the first rotating frame 21a and the second rotating frame 22a is attached to the first rotating frame 21a. A rectangular notch hole 223a is provided on the side of the second rotating frame 22a arranged to cover the outer periphery of the first rotating frame 21a so as to avoid the mounting plate 25a. The rotating frame portion 2a configured as described above is rotatable and capable of extending and contracting at an arbitrarily designated place in the longitudinal direction, and can avoid replacement of the mounting hole with respect to the driving means 24. Therefore, since the position of the working unit W can be adjusted more precisely, the working unit W can be set to a position arbitrarily requested by the operator. Since there is no need to replace the drive means 24, the number of adjustment steps can be reduced, so that the convenience for the operator is further improved.

  In the second modification, the first mounting holder 271 for mounting the adjustment rod 28 is provided on the front side of the first rotation shaft 211. With this configuration, the adjustment rod 28 rotates forward of the first rotating shaft 211, and the first rotating frame 21a rotates backward about the first rotating shaft 211. At the same time, the second rotating frame 22a can approach in the direction of the first rotating shaft 211 while gradually rotating. Thereafter, when the rotation is advanced, the rotation frame portion 2a gradually extends and returns to the original position. That is, during the rotation of the first rotation frame 21a, the work unit W can be moved closer to the front to perform the rotation operation, and the rotation operation of the work unit W can be performed in a narrower range. After the turning operation, that is, in the advanced operation state, the retracted state, and the reverse operation state, the movement of the second rotating frame 22a in the longitudinal direction is fixed by the adjustment rod 28, so that the second rotating frame 22a is stable without moving. Ridge forming work

  Although the present invention has been described by the above embodiments and modifications, it should not be understood that the description and drawings forming part of this disclosure limit the present invention. Modifications of the embodiments, examples, and operation techniques based on this disclosure will be obvious to those skilled in the art.

  INDUSTRIAL APPLICABILITY The present invention is applicable to an agricultural work machine that is mounted on a traveling machine such as a tractor and performs work while offsetting to the left and right sides in the traveling direction.

DESCRIPTION OF SYMBOLS 1 Machine frame 10 Mounting part 12 1st rotation base 13 Input shaft 14 Universal joint 2 Rotation frame part 21 1st rotation frame 22 2nd rotation frame 3 Support frame part 30 Support member 31 2nd rotation shaft 32 Arm 33 rod 4 embankment part 41 tillage device 5 ridge forming disk body W working part

Claims (4)

A machine frame attached to the traveling aircraft,
A rotating frame part whose one end side is rotatably supported by the machine frame and is capable of extending and contracting in the longitudinal direction;
A working unit rotatably supported on the other end of the rotating frame unit,
The working part is an embankment part equipped with a tillage device for cutting the soil of the original ridge,
A ridge forming disk body that presses while rotating the soil laid by the embankment located at the back of the embankment to form a ridge,
A ridge forming machine characterized by comprising: A first rotating frame, one end of which is rotatably supported by the machine frame;
A second rotating frame attached to the first rotating frame so as to be changeable in position;
The ridge forming machine according to claim 1, further comprising: The second rotating frame is capable of changing its position in parallel with the longitudinal direction with respect to the first rotating frame, and is provided on the first rotating frame so as to be fixed and released.
The ridge forming machine according to claim 2, characterized in that: An input shaft that is provided on the machine frame and supplies power from the traveling body while directing a rotation axis in a traveling direction of the traveling body,
A working unit input shaft that is provided in the working unit and drives the embankment unit and the ridge forming disc body that are provided in parallel with the rotation axis of the ridge forming disc body;
The ridge forming machine according to any one of claims 1 to 3, further comprising:

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