JP5261688B2 - Cocoon forming machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply and quickly attaching and detaching a cylindrical part attached to a ridge-forming apparatus to and from a disk and to achieve an efficiency improvement of an operation for forming a new ridge at a farm land having various ridge heights. <P>SOLUTION: The ridge-forming machine includes a mounding apparatus for mounding soil on old ridges and the ridge-forming apparatus for compacting mounded soil. The ridge-forming apparatus includes a disk 33 for compacting the slope of the mounded soil and a cylindrical part for compacting the top surface of the mounded soil. The cylindrical part holds a shaft 341. The shaft 341 has the longitudinal direction of its own directed in parallel with the central axis direction of the cylindrical part, is rotatable in the direction around the shaft and movable in a longitudinal direction. When a cam lever 347 is operated in a state in which fitting pins 344 projected from the end part of the cylindrical part are connected to first connection holes 333 formed on to the disk 33, the shafts 341 are moved in a longitudinal direction and rotated around the shaft and attachment and detachment of the disk 33 to and from the cylindrical part is locked. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a wrinkle forming machine that repairs old wrinkles to form new wrinkles.

  Conventionally, an embankment device and a ridge forming device are provided, and the embankment device is driven to pile up the soil on the old ridge, and then the ridge forming device is rotated to compact the embankment from above to form a new ridge on the old ridge. A wrinkle forming machine is known. As a wrinkle forming device, a device is known in which a cylindrical portion is protruded from the tip of a truncated cone-shaped disk, and the upper surface of the new punch is formed on the outer periphery of the cylindrical portion. Here, when forming a new ridge on an old ridge having a large ridge height, the cylindrical portion may come into contact with the heel side surface if the cylindrical portion remains fixed to the disk. In this respect, all of the wrinkle coaters described in Patent Document 1, Patent Document 2 and Patent Document 3 can remove the cylindrical portion of the wrinkle forming device from the front end of the disc. By rotating and using, it becomes possible to form a new wall on an old wall with a large wall height.

JP-A-9-140202 (paragraph 0032, FIG. 5) Japanese Patent Laid-Open No. 11-46503 (paragraph 0015, FIG. 4) Japanese Patent No. 3163269 (paragraph 0100, FIG. 4)

  In any of the wrinkle coaters described in Patent Documents 1 to 3, the cylindrical portion of the wrinkle forming apparatus is attached to the disk with bolts and nuts. Therefore, the operator must perform an operation of releasing the fastening between the bolt and the nut when removing the cylindrical portion from the disk. However, for workers who work on a wide range of farmland such as rice fields, it is troublesome to unfasten the bolts and nuts that are firmly fastened to detach the cylindrical portion from the disk. In particular, in farmland where only some of the old culverts are present, it is only necessary to remove the cylindrical portion for the part of the old culverts. In the wrinkle forming apparatus provided in the wrinkle coater described above, it is difficult to attach and detach the cylindrical portion easily and quickly in order to form a new wrinkle with respect to this part of the old wrinkle.

  The object of the present invention is to enable the cylindrical portion provided in the ridge forming apparatus to be easily and quickly detachable from the disk, and to realize the efficiency of work for forming new ridges in farmland where various ridge heights are mixed. That is.

  In addition, the applicant has proposed “a ridge forming machine having a ridge top surface earth removing device that contacts the upper surface of the old ridge in a working state and is released from contact with the upper surface of the old ridge in a non-working state” ( (Japanese Patent Application No. 2009-198286, “Koji forming machine”).

  The crease forming machine of the present invention includes a banking device for raising soil to an old pit, and a ridge forming device for compacting the banking raised to the old pit by the banking device, wherein the heel forming device has the side surface as described above. A frustoconical disk for compacting the slope of the embankment, a cylindrical part for compacting the upper surface of the embankment on the side, a lock mechanism for locking the attachment and detachment of the disk and the cylindrical part by operation from the operation part, and the disk And a rotation prevention means provided at a connection portion between the cylindrical portion and the cylindrical portion, and prevents the rotation of the cylindrical portion with respect to the rotation direction of the disk.

  The crease forming machine of the present invention as seen from another aspect includes a banking device for raising soil to an old pit, and a ridge forming device for compacting the embankment raised to the old pit by the banking device. The device is covered with a frustoconical disk that compacts the slope of the embankment on the side, a cylindrical part that compacts the upper surface of the embankment on the side, and a circumferential surface of the cylindrical part, and in the axial direction of the cylindrical part A shaft provided on the cylindrical portion that is directed in parallel to the longitudinal direction, is rotatable in a direction around the axis and is movable in the longitudinal direction, a first end of the cylindrical portion on the disc side, and an upper side of the disc A fitting pin projecting from either one of the bottom-side attachment ends, a first fitting hole provided in either one of the first end and the attachment end, and into which the fitting pin is fitted, A detent means comprising the shaft and the shaft A lock mechanism that locks attachment and detachment between the first end and the attachment end in a state in which the fitting pin is fitted in the first fitting hole by hand movement and rotation around the axis; and the cylindrical portion And an operating portion for moving the shaft in the longitudinal direction and rotating around the axis. The operating portion is provided at a second end opposite to the first end.

  According to the wrinkle forming machine of the present invention, locking of the disk and the cylindrical portion of the wrinkle forming device is realized only by moving the shaft in the longitudinal direction and rotating around the axis. Therefore, the cylindrical portion provided in the ridge forming apparatus can be easily and quickly detached from the disk, and the efficiency of the work of forming new ridges on farmland where various ridge heights are mixed is realized.

FIG. 3 is a right side view of the ridge forming machine when the ridge top cutting device is in a working state according to the first embodiment. It is a top view of the ridge forming machine when the ridge top surface earthing device is in a working state. It is a right view of a ridge forming machine when the ridge top soil removal device is in a non-working state. It is a top view of a ridge forming machine when a ridge top surface earthing device is in a non-working state. It is a motive power system diagram showing the drive system of a ridge forming machine when a ridge top surface earthing device is in a working state. It is a partially expanded rear view of the dredging upper surface earthing device and the embankment device in the working state. It is a partial expanded center sectional view of a disk and a cylindrical part in an unjoined state. It is a partial expanded center sectional view of the joining process of a disk and a cylindrical part. It is a partial expanded center sectional view of the disk and cylindrical part in a joined state. FIG. 8 is a view taken in the direction of arrow X in FIG. 7. It is a Y arrow line view of FIG. FIG. 9 is a view taken in the direction of arrow Z in FIG. 8. It is a partial expanded center sectional view of the joining process of a disk and a cylindrical part in the second embodiment.

  One embodiment will be described with reference to FIGS. For convenience of explanation, this embodiment is referred to as a first embodiment. 1 and 2 are a right side view and a plan view of the ridge forming machine 1 when the ridge top cutting device 51 is in a working state. 3 and 4 are a right side view and a plan view of the ridge forming machine 1 when the ridge top cutting device 51 is in a non-working state. FIG. 5 is a power system diagram showing a drive system of the ridge forming machine 1 when the ridge top cutting device 51 is in a working state. FIG. 6 is a partially enlarged rear view of the saddle top surface cutting device 51 and the embankment device 41 in the working state. In FIG. 6, the shape of the ridge is indicated by a one-dot chain line, and the disk 33 is omitted.

  The ridge forming machine 1 is used by being attached to the rear of a tractor (not shown). The wrinkle forming machine 1 includes a mounting frame 11 at an end on the front side in the traveling direction of the tractor (right side in FIGS. 1 to 4), and the mounting frame 11 is attached to the rear of the tractor. Hereinafter, the front side in the traveling direction of the tractor may be simply referred to as “front side in the traveling direction”. Further, the rear side in the traveling direction of the tractor may be simply referred to as “the rear side in the traveling direction”.

  One top bracket 12 is attached to the mounting frame 11 at the center of the upper portion, and lower pins 13 and 14 are attached to both ends of the lower portion. When the top bracket 12 and the lower pins 13 and 14 are connected to a three-point link mechanism (not shown) of the tractor, the mounting frame 11 is mounted on the tractor. Further, from the rear side of the mounting frame 11, the horizontal rotation shaft 22 extends in a substantially vertical direction.

  The ridge forming machine 1 includes an input shaft 15. The input shaft 15 is connected to a PTO shaft (not shown) provided in the tractor, and inputs the driving force of the tractor to the rod forming machine 1.

  The ridge forming machine 1 includes a support frame 21. As shown in FIGS. 2 and 4, the support frame 21 is attached to the mounting frame 11 via a horizontal rotation shaft 22 provided in the mounting frame 11. The support frame 21 is rotatable in a horizontal plane with respect to the mounting frame 11 with the horizontal rotation shaft 22 as a rotation center. The mounting frame 11 and the support frame 21 are connected to each other by a telescopic rotation cylinder 23. The rotation cylinder 23 expands and contracts when the support frame 21 rotates in a horizontal plane with the horizontal rotation shaft 22 as a rotation center, and adjusts the amount of offset to the side of the ridge forming machine 1 with respect to the traveling direction of the tractor. .

  The ridge forming machine 1 includes a ridge forming device 31, a banking device 41, and a ridge top surface cutting device 51. First, these devices and the drive system that drives them will be described.

[Wrinkle forming apparatus] The wrinkle forming apparatus 31 is attached to the end of the support frame 21 on the rear side in the traveling direction. The wrinkle forming device 31 includes a wrinkle forming device rotating shaft 32, a disk 33, and a cylindrical portion 34.

  The wrinkle forming device rotating shaft 32 extends horizontally in a direction orthogonal to the traveling direction, and is rotatable around the axis.

  The disk 33 has a truncated cone shape, and is attached to the ridge forming device rotating shaft 32 with the truncated cone tip side facing the inclined side surface US of the old ridge U (see FIG. 6). A plurality of metal plates are attached to the surface of the disk 33.

  The cylindrical portion 34 has a cylindrical shape and is attached to the tip of the truncated cone of the disk 33. The cylindrical portion 34 is detachable from the disk 33. Details of this point will be described later with reference to FIGS.

[Banking Device] The banking device 41 is installed on the front side in the traveling direction with respect to the ridge forming device 31. The banking device 41 includes a banking device rotating shaft 42, a plurality of excavating blades 43, and a cover 44.

  The banking device rotation shaft 42 extends in parallel with the ridge forming device rotation shaft 32, is located on the front side in the traveling direction with respect to the ridge forming device 31, and is rotatable around the axis.

  The excavation blade 43 is attached to the banking device rotation shaft 42 and extends from the banking device rotation shaft 42 by radiating. The tip of each excavation blade 43 is bent toward the side of the sloping inclined surface. The excavation blade 43 excavates the side surface US and the bottom portion of the old dredger U to be excavated, and scatters the excavated soil to the side surface US and the upper surface UU (see FIG. 6) of the old dredger U to form a fill.

  The cover 44 is installed on the upper part of the embankment device 41, prevents the soil excavated by the excavating blade 43 from being scattered, and guides it to the old dredge U side.

[Saddle top surface cutting device] The top surface cutting device 51 is installed between the embankment device 41 and the paddle forming device 31. The dredge upper surface earthing device 51 includes a dredge upper surface earthing device rotation shaft 52, a rotation shaft side clutch 53, a digging blade side clutch 54, a plurality of digging blades 55, a digging blade attachment shaft 56, a cover 57, A connecting shaft 58, a saddle top surface earthing device side third sprocket 81, a chain 82, and a drilling blade mounting shaft sprocket 83 are provided.

  The dredge top surface earthing device rotating shaft 52 extends in the horizontal direction and is rotatable around the axis. The rotational force of the dredge upper surface earthing device rotation shaft 52 is transmitted to the excavation blade mounting shaft 56 via the rotation shaft side clutch 53 and the excavation blade side clutch 54 (details will be described later in the section of [Drive system]).

  Each excavation blade 55 is attached to an excavation blade attachment shaft 56, and the tip of each excavation blade 55 is bent toward the saddle inclined surface side. The excavating blade 55 is installed at a height position where the lower end of the excavating blade 55 is higher than both the lower end of the dredging device 31 and the lower end of the embankment device 41 so that the lower end of the excavating blade 55 is positioned on the upper surface UU of the old dredger U. The When the excavation blade mounting shaft 56 is rotated by receiving the rotational force of the dredge upper surface earthing device rotation shaft 52, the excavation blade 55 rotates to excavate the upper surface UU of the old dredge U.

  The cover 57 is installed in the upper part of the dredging upper surface earth removing device 51 and prevents the earth excavated by the excavating blade 55 from scattering to the outside.

  [Drive System] The details of the drive system will be described with reference to FIGS. The rotary shaft side clutch 53 is attached to the tip end of the rotary shaft 52. Further, the excavation blade side clutch 54 is attached to the excavation blade attachment shaft 56. Here, the dredge upper surface earthing device rotating shaft 52 and the excavating blade mounting shaft 56 are rotatably connected via a connecting shaft 58. The connecting shaft 58 is substantially parallel to the traveling direction and is inclined so that the rear side is up (see FIG. 3). As an example, the inclination angle of the connecting shaft 58 is about 30 degrees with respect to the horizontal plane. The inclination angle is preferably in the range of 15 to 80 degrees with respect to the horizontal plane.

  The wrinkle forming machine 1 includes a universal joint 71. The universal joint 71 has one end connected to the input shaft 15 and the other end connected to the input shaft of the first gear case 72 provided on the support frame 21. The universal joint 71 transmits the driving force from the input shaft 15 to the first gear case 72. A second gear case 73 is provided below the first gear case 72 so as to be rotatable in the horizontal direction. The first gear case 72 incorporates a bevel gear and transmits the driving force input from the universal joint 71 to the second gear case 73. The second gear case 73 has a built-in bevel gear, transmits the driving force input from the first gear case 72 to the upper surface earthing device rotation shaft 52, and rotationally drives the upper surface earthing device rotation shaft 52.

  By the way, the saddle face top surface earthing device side third sprocket 81 is coaxially attached to the saddle face top surface sanding device rotation shaft 52. Therefore, the driving force transmitted to the dredge upper surface earthing device rotating shaft 52 is transmitted to the dredge upper surface earthing device side third sprocket 81 via the rotary shaft side clutch 53 and the excavating blade side clutch 54. The excavation blade attachment shaft sprocket 83 is attached to the excavation blade attachment shaft 56. A chain 82 is spanned between the third sprocket 81 and the excavation blade mounting shaft sprocket 83. As a result, the driving force of the third upper surface earthing device side sprocket 81 is transmitted to the excavation blade attachment shaft sprocket 83 via the chain 82 to rotate the excavation blade attachment shaft 56.

  Further, on the dredge upper surface earthing device rotating shaft 52, a dredge upper surface earthing device side first sprocket 74 and a dredge upper surface earthing device side second sprocket 77 are attached. A banking device-side sprocket 75 is attached to the banking device rotating shaft 42. A first chain 76 is stretched between the first sprocket 74 on the saddle top surface side earthing device and the sprocket 75 on the banking device side. Further, a hook forming apparatus side sprocket 78 is attached to the hook forming apparatus rotating shaft 32. A second chain 79 is stretched between the second sprocket 77 on the upper surface earth cutting device side and the second sprocket 78 on the upper surface forming device side. The driving force input from the input shaft 15 through these structures and the universal joint 71, the first gear case 72, the second gear case 73, and the saddle top surface earthing device rotating shaft 52 described above is used for the embankment device rotating shaft 42 and the ridge formation. These are transmitted to the device rotation shaft 32 and driven to rotate.

  Again referring to FIGS. The cocoon forming machine 1 further includes a gauge ring 61 on the side opposite to the old cocoon U (the field side). The gauge ring 61 is a metal conical plate, the outer periphery of which is inserted into a farm scene (not shown) to adjust the height of the heel forming device 31 that forms a new culm, and is further formed from the heel. By receiving the pressure, the straightness of the heel former 1 during traveling is maintained.

  When forming a new basket using the above-described basket forming machine 1, first, the disk 33 of the basket forming apparatus 31 is set on the side surface US of the old basket U, and the cylindrical portion 34 of the basket forming apparatus 31 is placed on the old basket U. It is installed on the upper surface UU. Moreover, the banking apparatus 41 is installed in the location just before the advancing direction front side of the side US of the old ridge U. Furthermore, the dredging upper surface cutting device 51 is installed on the upper surface UU of the old dredger U.

  Next, the ridge forming machine 1 is pulled by a tractor (not shown). At this time, the driving force of the tractor is transmitted from the PTO shaft through the input shaft 15 and the like to the vertical surface soil removal device rotating shaft 52.

  The driving force transmitted to the dredge upper surface earthing device rotating shaft 52 is transmitted to the embankment device rotating shaft 42 via the dredge upper surface earthing device side first sprocket 74, the first chain 76, and the embankment device side sprocket 75, and a plurality of driving forces are transmitted. The excavation blade 43 rotates. In this way, the excavation blade 43 of the embankment device 41 excavates the side surface US of the old ridge U and the field scene below the side surface US to scatter the soil, and raises the soil on the old ridge U.

  Further, the driving force transmitted to the dredge upper surface earthing device rotating shaft 52 includes the rotating shaft side clutch 53, the excavating blade side clutch 54, the dredge upper surface earthing device side third sprocket 81, the chain 82, and the excavating blade attaching shaft sprocket 83. Is transmitted to the excavation blade mounting shaft 56 and the plural excavation blades 55 are rotated. In this way, the dredging upper surface cutting device 51 cuts the upper surface UU of the old reed U, cuts weeds, etc., and evenly adjusts the unevenness of the upper surface UU of the old reed U.

  Further, the driving force transmitted to the dredging upper surface earthing device rotating shaft 52 passes through the dredging upper surface earthing device side second sprocket 77, the second chain 79, and the dredging device side sprocket 78, and the dredging device rotating shaft 32. The wrinkle forming device rotating shaft 32 is rotated. Thereby, the disk 33 and the cylindrical part 34 rotate.

  By the way, as will be described later, the disk 33 of the wrinkle forming device 31 is rotated in contact with the entire side face inclined surface of the wrinkle to form the side inclined face of the wrinkle. For this reason, the diameter of the disk 33 of the ridge forming apparatus 31 is larger than the diameter to the tip of each excavation blade 43 attached to the embankment apparatus 41 as shown in FIG. Further, the frustoconical outer end portion of the disk 33 is positioned together with the base portion of the lower end of the slope of the work object. For this reason, the lower end of the disk 33 attached to the ridge forming machine 1 and the lower end of each excavation blade 43 attached to the embankment device 41 are located at substantially the same height. Therefore, a space A is formed in the upper part of the embankment device 41.

  When the excavating blade 55, the excavating blade mounting shaft 56, and the cover 57 are rotated and folded with the connecting shaft 58 as the center of rotation, the excavating blade 55 is separated from the upper surface UU of the old rod U and enters a non-working state. When the non-working state is established, the meshing between the rotary shaft side clutch 53 and the excavation blade side clutch 54 is released, and the excavation blade attachment shaft 56, the excavation blade 55, and the cover 57 are in positions indicated by alternate long and short dash lines in FIG. (Or the position shown in FIG. 3), that is, the upper side of the tractor, which moves obliquely forward compared to the time of work, and is positioned in the space A above the embankment device 41. Thus, in this Embodiment, the space A which arises in the upper part of the embankment apparatus 41 can be utilized effectively, and the dredging upper surface earth-removing apparatus 51 at the time of non-working can be accommodated. Further, the excavation blade mounting shaft 56, the excavation blade 55, and the cover 57 are folded to the opposite side from the rod forming device 31 that is a heavy object with the connection shaft 58 interposed therebetween. Thereby, the center of gravity of the entire ridge forming machine 1 moves to the front side in the traveling direction, and the work balance becomes good. The excavation blade mounting shaft 56, the excavation blade 55, and the cover 57 are rotated downward about the connecting shaft 58, so that these positions are indicated by solid lines in FIG. 6 (or shown in FIG. 1). The rotary shaft side clutch 53 and the excavation blade side clutch 54 are connected to each other, and the excavation blade 55 is brought into the working state in proximity to the upper surface UU of the old rod U.

  Furthermore, in the scissor forming machine 1 of the present embodiment, the clutch is disconnected at the same time that the excavating blade 55 and the like are raised diagonally forward, and the excavating blade mounting shaft 56 and the excavating blade 55 are not driven, so that the operator Increased safety.

  In addition, the dredging upper surface earth removal device 51 having the excavating blade 55, the excavating blade mounting shaft 56, the cover 57, and the like inserts a fixing pin (not shown) into a rotation fixing hole 90 provided around the connecting shaft 58. Thus, the working position and the non-working position may be fixed. Moreover, you may make it rotate the saddle | top-surface soil-removal apparatus 51 through an electric cylinder etc. interposed.

  Hereinafter, the details of the wrinkle forming apparatus 31 will be described with reference to FIGS. FIG. 7 is a partially enlarged central sectional view of the disk 33 and the cylindrical portion 34 in an unjoined state. FIG. 8 is a partially enlarged central sectional view of the joining process of the disk 33 and the cylindrical portion 34. FIG. 9 is a partially enlarged central cross-sectional view of the disk 33 and the cylindrical portion 34 in the joined state. 10 is a view taken in the direction of arrow X in FIG. FIG. 11 is a view on arrow Y in FIG. FIG. 12 is a view taken in the direction of arrow Z in FIG.

  The peripheral speeds of the disk 33 and the cylindrical portion 34 in the kite forming device 31 are set in advance so as to be faster than the traveling speed of the tractor and kite forming machine 1 by adjusting the gear ratio. For this reason, the disk 33 is in contact with the side surface US of the old ridge U and the cylindrical portion 34 is in contact with the upper surface of the old ridge U while rotating, thereby compacting the earth contact surface.

  The disk 33 is rotated by the rotation of the ridge forming apparatus rotating shaft 32 during the ridge forming operation, and comes into contact with the side surface US of the old ridge U where the surface of the disk 33 is inclined, and the embankment device 41 (FIGS. 1 to 6). The embankment raised on the old paddle U is compacted in accordance with (see) and the inclined surface of the new paddle is formed. For this reason, the disk 33 is formed with sufficient strength and weight to compact the embankment. In addition, the cylindrical portion 34 is rotated so that the outer periphery is in contact with the upper surface of the old bag during the bag forming operation, and forms the upper surface of the new bag. Hereinafter, each of the disk 33 and the cylindrical portion 34 and the lock mechanism P that locks the attachment and detachment thereof will be described.

  [Cylindrical Part] A shaft 341 is attached to the cylindrical part 34. The longitudinal direction of the shaft 341 is held by the cylindrical portion 34 so as to coincide with the axial center of the cylindrical portion 34, and is parallel to the axial direction of the cylindrical portion 34. For this reason, the shaft 341 is covered by the circumferential surface of the cylindrical portion 34. The shaft 341 is held by the cylindrical portion 34 so as to be rotatable about the axis and movable in the longitudinal direction. Here, the end portion of the cylindrical portion 34 on the disk 33 side is referred to as a first end portion 34A. In addition, the end of the cylindrical portion 34 opposite to the first end 34A is referred to as a second end 34B.

  On the end face on the first end portion 34A side, the fitting pin 344 protrudes from each of two symmetrical positions with the shaft 341 protruding from the end face interposed therebetween.

  A lock plate 342 as a hook is attached to the tip of the shaft 341 protruding from the end surface on the first end 34A side on the disk 33 side. 11 and 12, the lock plate 342 has a size that can be inserted into a long hole 332 (described later) provided on the disk 33 side, and has an elliptical shape that is substantially the same as this. The lock plate 342 is attached to the tip of the shaft 341 at the center thereof, and extends in a direction intersecting with the axial direction of the shaft 341. Further, second fitting holes 343 are provided in both end regions of the lock plate 342.

  A spring 345 is disposed between the lock plate 342 and the cylindrical portion 34. A washer 346 is sandwiched between the spring 345 and the end surface on the first end 34A side. The spring 345 pushes the lock plate 342 toward the disk 33 side.

  Further, the first end portion 34 </ b> A is formed with a step portion C having a shape that fits into the step portion B of the attachment end portion 33 </ b> A of the disk 33.

  On the other hand, on the second end portion 34B side, a cam lever 347 as an operation portion is provided with a disc spring 348 and a washer 349 interposed therebetween. The cam lever 347 is for the operator to hold the shaft 341 in order to move the shaft 341 in the longitudinal direction or to rotate in the direction around the axis. The cam lever 347 is in contact with the washer 349 and the cam portion 347a. And a gripping portion 347b extending. The cam portion 347 a is provided with an attachment shaft 350, and the cam lever 347 and the shaft 341 are connected via the attachment shaft 350. In the state shown in FIGS. 7 and 10, the cam lever 347 cannot rise up around the mounting shaft 350 by the stopper bracket 351 extending from the end surface on the second end portion 34B side, and the shaft 341 Can be rotated only in a direction RA that rotates the shaft around the axis. The gripping portion 347b can rotate 90 degrees from the position shown by the solid line in FIG. 10 to the position shown by the one-dot chain line in FIG. 10 so as to hit another stopper bracket 351. Here, the grip portion 347b positioned at the position indicated by the one-dot chain line in FIG. 10 faces upward as shown in FIG. In this state, when the gripping portion 347b is rotated in the direction RB so as to straddle the tip of the shaft 341, the gripping portion 347b faces downward as shown in FIG. In this process, the cam portion 347a rotates and moves the shaft 341 attached to the cam portion 347a in the direction RC away from the washer 349. In the state shown in FIG. 9, the contact surface between the cam lever 347 and the washer 349 is formed in a flat shape, and the cam lever 347 does not move due to the frictional force acting between them.

  [Disc] The upper bottom end of the disc 33 is an attachment end 33A for attaching the cylindrical portion 34. A first fitting hole 333 into which the fitting pin 344 is fitted and a long hole 332 through which the lock plate 342 can pass are formed on the upper bottom surface of the attachment end 33A.

  Further, the mounting end portion 33A is formed with a stepped portion B having a shape that fits into the stepped portion C of the first end portion 34A of the cylindrical portion 34.

  When the cylindrical portion 34 is attached to the disk 33 in the heel forming apparatus 31 described above, first, as shown in FIG. 7, the cam lever 347 is operated to push out the lock plate 342 to the disk 33 side. Then, the lock plate 342 is moved toward the long hole 332 on the disk 33 side, and the step B formed on the disk 33 and the step C formed on the cylindrical part 34 are fitted. In the state shown in FIG. 7, the lock plate 342 faces in the horizontal direction. When the stepped portion B and the stepped portion C are fitted, as shown in FIG. 8, the two fitting pins 344 are fitted into the first fitting holes 333 on the disk 33 side. As a result, the tip end portion of the fitting pin 344 protrudes to the inside of the disc 33, and the cylindrical portion 34 is prevented from rotating in the rotation direction of the disc 33 (rotation preventing means S).

  Subsequently, the cam lever 347 is moved from the position shown in FIG. 7 to the position shown in FIG. 8 to rotate the shaft 341 by 90 degrees. Thereby, the lock plate 342 faces in the vertical direction. In the course of this operation, the second fitting hole 343 moves from the position shown in FIG. 11 to the position shown in FIG. 12, and the position of the second fitting hole 343 coincides with the fitting pin 344.

  Next, the cam lever 347 is moved from the position shown in FIG. 8 to the position shown in FIG. 9 to rotate the cam lever 347 so as to straddle the tip of the shaft 341. As a result, the second fitting hole 343 provided in the lock plate 342 is hooked and fitted to the tip of the fitting pin 344 protruding inside the disk 33, and the attachment / detachment of the disk 33 and the cylindrical part 34 is locked. The cylindrical portion 34 is fixed to the disk 33. That is, the wrinkle forming device 31 has a lock mechanism P. Further, the lock plate 342, the first fitting hole 333, the fitting pin 344, and the second fitting hole 343 constitute a hook structure Q.

  When removing the cylindrical portion 34 from the disk 33, the cam lever 347 is moved in the reverse order of the operation of attaching the cylindrical portion 34 to the disk 33.

  As described above, in the wrinkle forming apparatus according to the present embodiment, the shaft 341 can be moved in the longitudinal direction or rotated around the axis only by operating the cam lever 347. The lock of the disk 33 and the cylindrical part 34 constituting 31 is realized. Therefore, the cylindrical portion 34 provided in the ridge forming apparatus 31 can be easily and quickly detached from the disk 33, and the efficiency of the work of forming new ridges on farmland where various ridge heights are mixed is realized.

  Note that the fitting pin 344 may be provided in the disk 33 and the first fitting hole 333 may be provided in the cylindrical portion 34.

  Next, another embodiment will be described with reference to FIG. For convenience of explanation, this embodiment is referred to as a second embodiment. In this case, the same reference numerals are used for the same parts as those in the first embodiment, and description thereof is also omitted. FIG. 13 is a partially enlarged central sectional view of the joining process of the disk 33 and the cylindrical portion 34. In the scissor forming apparatus 31 of the present embodiment, the disk 33 and the cylindrical portion 34 are locked by one bolt and nut fastening. More specifically, a male screw portion 902 is formed along the circumferential surface of the tip of the shaft 341 that protrudes from the center of the end surface of the first end portion 34A in the cylindrical portion 34. In addition, a female screw portion 903 is disposed on the attachment end portion 33A of the disk 33 at a location where the inserted male screw portion 902 abuts.

  In the present embodiment, by moving the cam lever 347 and rotating the shaft 341 in the direction around the axis, the male screw portion 902 is screwed into the female screw portion 903, and the cylindrical portion 34 is attached to the disk 33. That is, the male screw portion 902 and the female screw portion 903 constitute a bolt / nut structure 901.

  As described above, also in the wrinkle forming apparatus of the present embodiment, the disk 33 and the cylindrical portion 34 constituting the wrinkle forming apparatus 31 are locked only by operating the cam lever 347. Therefore, the cylindrical portion 34 provided in the ridge forming apparatus 31 can be easily and quickly detached from the disk 33, and the efficiency of the work of forming new ridges on farmland where various ridge heights are mixed is realized.

  Further, in the present embodiment, a bolt / nut structure 901 may be configured by providing a female screw portion at the tip of the shaft 341 and providing a male screw portion on the disk 33.

  Further, in both the first embodiment and the second embodiment, the dredging upper surface earth cutting device 51 is provided between the embankment device 41 and the dredging forming device 31, but this dredging The upper surface cutting device 51 may be provided on the front side of the embankment device 41.

  Further, when the work is performed with the cylindrical portion 34 of the reed forming device 31 removed, the reed top surface earthing device 51 is rotated and folded upward to fold the reed top surface soiling device 51 even in work with a large reed height. Can work properly without interference.

DESCRIPTION OF SYMBOLS 1 畦 forming machine 31 畦 forming device 33 disc 33A attachment end 332 long hole 333 1st fitting hole 34 cylindrical part 34A 1st end 34B 2nd end 341 shaft 342 lock plate (hook)
343 Second fitting hole 344 Fitting pin 347 Cam lever (operation part)
41 Embankment device 51 畦 Upper surface grinding device 901 Bolt nut structure 902 Male thread portion 903 Female thread portion P Lock mechanism Q Hook structure S Non-rotating means U Old shear

Claims (6)

An embankment device that heaps up the soil in the old fence,
A crust forming device that compacts the embankment raised on the old cave by the embankment device,
With
The wrinkle forming device
A frustoconical disc that compacts the slope of the embankment on the side;
A cylindrical portion for compacting the upper surface of the embankment at the side;
A lock mechanism for locking the attachment and detachment of the disc and the cylindrical portion by an operation from an operation portion;
Anti-rotation means provided at a connection portion between the disc and the cylindrical portion, and prevents the rotation of the cylindrical portion with respect to the rotation direction of the disc;
including,
Ridge forming machine. An embankment device that heaps up the soil in the old fence,
A crust forming device that compacts the embankment raised on the old cave by the embankment device,
With
The wrinkle forming device
A frustoconical disc that compacts the slope of the embankment on the side;
A cylindrical portion for compacting the upper surface of the embankment at the side;
A shaft that is covered by the circumferential surface of the cylindrical portion, has its longitudinal direction parallel to the axial direction of the cylindrical portion, and is rotatable about the axis and movable in the longitudinal direction; ,
A fitting pin protruding from one of the first end on the disk side and the mounting end on the upper bottom side of the disk in the cylindrical part, and provided on the other of the first end and the mounting end A first fitting hole into which the fitting pin is fitted, and a detent means comprising:
A locking mechanism that locks the attachment and detachment between the first end and the attachment end in a state in which the fitting pin is fitted into the first fitting hole by the longitudinal movement and rotation around the shaft;
An operation portion provided at a second end portion of the cylindrical portion opposite to the first end portion, for moving the shaft in a longitudinal direction and rotating about the axis;
including,
Cocoon forming machine. The locking mechanism is
A hook extending from the shaft in a direction intersecting the axial direction of the shaft;
The hooking body, which is provided at the attachment end portion, forms a long hole through which the hooking body can pass, and is rotated and displaced by rotation around the axis of the shaft after passing through the long hole and positioned inside the disk, A hook structure hooked to the mounting end;
including,
The wrinkle forming machine according to claim 1 or 2. The fitting pin protrudes from the first end;
The first fitting hole is provided at the attachment end,
The hooking body forms a second fitting hole into which a tip end portion of the fitting pin fitted into the first fitting hole enters.
The wrinkle forming machine according to any one of claims 1 to 3. The locking mechanism is
A bolt and nut structure for fastening the end of the disc side of the shaft and the mounting end with a bolt and nut,
The wrinkle forming machine according to claim 1 or 2. Further comprising a saddle top surface earthing device for shaving the upper part of the old fence,
The dredge top surface earthing device can be rotated and folded upward away from the dredge upper surface,
The wrinkle forming machine according to any one of claims 1 to 5.

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