JP6281970B2 - Agricultural machine - Google Patents

Description

  The present invention relates to an agricultural machine capable of easily injecting grease.

  Conventionally, for example, an agricultural machine described in Patent Document 1 is known.

  This conventional agricultural machine has a disk claw, a rotating shaft welded and fixed to a hole in the center of the disk claw, a claw arm that rotatably supports the rotating shaft via a bearing ball (bearing), A grease nipple for injecting grease (lubricant) into the bearing ball portion is provided on the tip side of the claw arm.

JP 62-11001 (Fig. 5)

  And in the agricultural machine using the bearing which is a bearing lubricated with such a grease, it is calculated | required that an operator can perform a grease injection | pouring operation | work easily, for example.

  This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can perform grease injection | pouring operation | work easily.

Agricultural machine according to claim 1, wherein includes a rotating shaft, a support for rotatably supporting the rotary shaft through a bearing, mounted on the support, the supply side of the grease flows supplied to the bearing A grease flow path forming body in which a grease flow path and a discharge-side grease flow path through which grease discharged from the bearing flows is formed, and a grease attached to the support and for injecting grease into the supply-side grease flow path A nipple and a grease outlet hole formed in the support and communicating with the discharge-side grease flow path; the support has a plate-like side plate main body; and the grease nipple is attached to the side plate main body. The grease outlet hole is attached to the side plate body.

Agricultural machine according to claim 2, wherein includes a rotating shaft member, a support member for rotatably supporting the rotary shaft through a bearing, mounted on the support, the supply side of the grease flows supplied to the bearing A grease flow path forming body in which a grease flow path and a discharge-side grease flow path through which grease discharged from the bearing flows is formed, and a grease attached to the support and for injecting grease into the supply-side grease flow path A nipple and a grease outlet hole formed in the support and communicating with the discharge-side grease flow path, wherein the grease outlet hole is formed so as to be positioned in the vicinity of the grease nipple. is there.

Agricultural machine according to claim 3, wherein includes a rotating shaft, a support for rotatably supporting the rotary shaft through a bearing, mounted on the support, the supply side of the grease flows supplied to the bearing A grease flow path forming body in which a grease flow path and a discharge-side grease flow path through which grease discharged from the bearing flows is formed, and a grease attached to the support and for injecting grease into the supply-side grease flow path A nipple and a grease outlet hole formed in the support and communicating with the discharge-side grease flow path; the support is a side plate portion of the machine body; and the grease nipple The fuselage has a transmission case portion attached to the side plate portion, and the grease nipple and the grease outlet hole portion Those that are located in portions not covered with the transmission case portion of the part.

The farm machine according to claim 4 is the farm machine according to any one of claims 1 to 3, wherein the grease is discharged from a portion of the bearing opposite to the axial end surface side of the rotary shaft body. It is what.

  According to the present invention, the operator can easily perform the grease injection operation, and the completion of the grease injection operation can be easily confirmed by visually observing the grease exiting from the grease outlet hole.

It is a partial side view of the agricultural working machine which concerns on the 1st Embodiment of this invention. It is a top view of an agricultural working machine same as the above. It is a partial front view of a farm work machine same as the above. It is a side view of the side-plate part of an agricultural working machine same as the above. It is a front view of the side-plate part of an agricultural working machine same as the above. It is a figure which shows the cover side board of an agricultural working machine same as the above. It is a figure which shows the grease flow path formation body of an agricultural working machine same as the above. It is a figure which shows the contact plate of an agricultural working machine same as the above. It is principal part sectional drawing of an agricultural working machine same as the above. It is a figure which shows the grease flow path part of an agricultural working machine same as the above. It is an image figure of a grease flow path part same as the above. It is an image figure of a grease flow path part same as the above. It is a partial side view of the agricultural machine based on the 2nd Embodiment of this invention. It is a figure which shows the grease flow path formation body of an agricultural working machine same as the above. It is an image figure of a grease flow path part same as the above. It is principal part sectional drawing of the agricultural machine based on the 3rd Embodiment of this invention.

  A first embodiment of the present invention will be described with reference to FIGS.

  In the figure, 1 is an agricultural machine, and this agricultural machine 1 is connected to the rear part of a tractor (not shown), which is a traveling vehicle, for example, while moving forward (traveling direction) on the field by forward traveling of the tractor, A flare mower that performs cutting work (chopping work) that is agricultural work.

  That is, the farm work machine 1 cuts unnecessary leaves and leaves of an object (not shown), for example, a crop (such as sweet potato or potato) vegetated on the straw of the field while moving forward on the field.

  As shown in FIG. 1 to FIG. 3, the agricultural machine 1 is removably connected to a three-point hitch part (worker lifting support part) at the rear of the tractor, and is rotatable to the machine 2. A left and right rotating shaft body (rotating object) 3 that is provided and rotates at a high speed in a predetermined direction, and a claw body 4 that is a plurality of cutting bodies that are detachably attached to the rotating shaft body 3 and cut an object to be cut. I have.

  The agricultural machine 1 also includes a pair of left and right guide bodies (dividers) 5 that guides the object to be cut to the nail body 4 side by raising the fallen object and raising the object to the rear. It has a pair of left and right grounding wheels (gauge wheels) 6 that move in contact with the field. The height position of the grounding ring 6 can be adjusted by operating the handle portion 8 of the adjusting member 7.

  The airframe 2 has a three-point connecting portion 11 releasably connected to a three-point hitch portion at the rear of the tractor (not shown). The three-point connecting portion 11 has one top mast 12 connected to the upper link of the three-point hitch portion of the tractor and a pair of left and right lower arms 13 connected to the lower link of the three-point hitch portion of the tractor. doing.

  The machine body 2 has an input shaft support portion 15 at the center in the left-right direction on the front side, and the input shaft 16 in the front-rear direction is rotatably supported by the input shaft support portion 15. The input shaft 16 is connected to the PTO shaft of the tractor via a joint, and power output from the PTO shaft is input to the input shaft 16. The input shaft 16 is connected to power transmission means 21 for transmitting the power input to the input shaft 16 to the rotary shaft body 3.

  The power transmission means 21 includes a transmission shaft 22, upper and lower pulleys 23 and 24, a transmission belt 25 that is an endless transmission member spanned between the pulleys 23 and 24, and the like. The transmission shaft 22 is disposed in a frame pipe portion 26 that protrudes laterally from the input shaft support portion 15. Both pulleys 23 and 24 and the transmission belt 25 are disposed in a transmission case portion 28 located on the left end side (left side in the traveling direction) which is one end side in the left-right direction of the machine body 2. That is, a part of the power transmission means 21 is accommodated in the transmission case portion 28 that is a belt case located at the side end of the machine body 2.

  Further, the airframe 2 has side plate portions 31 that are a pair of left and right support bodies positioned vertically on both ends of the airframe 2 in the left-right direction. The both side plate portions 31 support the horizontal rotating shaft 3 that is longitudinal in the left-right direction and is rotatable. That is, the side plate portion 31 supports the axial end portion of the rotary shaft body 3 via the bearing (bearing member) 32 so as to be rotatable. The upper part of the rotating shaft body 3 is covered with a cover part 33 of the machine body 2.

  As shown in FIG. 1 to FIG. 6 and the like, each side plate portion 31 of the airframe 2 has a plate-like side plate main body (cover side plate) 36 positioned vertically and a lower side attached to the lower end portion of the side plate main body 36. A side plate 37 and a cylindrical bearing boss 38 fixed to a portion of the side plate main body 36 facing the upper portion of the lower opening-shaped notch 39 are provided. The bearing boss 38 rotatably supports the axial end portion of the rotary shaft 3 via the bearing 32.

  The rotary shaft body 3 includes a shaft body portion 18 having a longitudinal direction in which a large number of claw holders 17 protrude from an outer peripheral surface, and a diameter smaller than that of the shaft body portion 18 and on both end surfaces of the shaft body portion 18. It is composed of a projecting round shaft-shaped shaft end portion 19. The shaft end 19 of the rotary shaft 3 is supported by a bearing 32 so as to be rotatable.

  The side plate main body 36 has a plurality of (for example, four) bolt holes 40, a grease nipple mounting hole 41, and a grease outlet hole 42 in addition to the notch 39 (see FIG. 6). The grease outlet hole 42 is formed in the vicinity of the grease nipple mounting hole 41 and at a position directly above the grease nipple mounting hole 41. A grease nipple 35 is attached to the grease nipple attachment hole 41 of the side plate body 36, and the grease nipple 35 protrudes outward from the outer surface of the side plate body 36 of the side plate portion 31.

  On the left end side of the machine body 2, the grease nipple 35 and the grease outlet hole portion 42 located on the same surface side close to each other in the vertical direction are located in a portion of the side plate portion 31 that is not covered by the transmission case portion 28. doing. The transmission case portion 28 is attached to the outer surface of the side plate body 36 of the side plate portion 31 with a fixture 43 made of bolts, nuts and the like.

  As shown in FIGS. 5 and 9 and the like, the bearing boss 38 has a cylindrical outer boss portion 44 projecting outward from the outer surface of the side plate body 36 and a larger diameter than the outer boss portion 44. A cylindrical inner boss portion 45 that protrudes inward from the inner surface of the side plate main body 36 is configured.

  Between the inner peripheral surface of the outer boss portion 44 and the outer peripheral surface of the shaft end portion 19 of the rotary shaft body 3, a bearing 32, a bearing pressing member 46, and a snap ring 47 are disposed.

  The bearing 32 is, for example, a ball bearing with a one-side seal cover, and includes an outer ring 32a, an inner ring 32b, a plurality of balls 32c disposed therebetween, and a one-side seal cover 32d that can be elastically deformed. Yes. The seal cover 32d is disposed at a position on the axial end surface 3a side (axial outer end side) of the rotary shaft 3 in the bearing 32. Further, the bearing retaining member 46 for preventing grease leakage is disposed on the outer side of the bearing 32, contacts the outer end surface of the rotating shaft 3 on the axial end surface 3a side of the bearing 32, and is greased. The seal cover 32d that has been pressed and deformed is also brought into contact. Further, the snap ring 47 is fitted in a concave groove portion 48 formed on the inner peripheral surface of the outer boss portion 44.

  An annular support step portion 49 is formed on the outer peripheral surface of the inner boss portion 45. Further, the inner boss portion 45 has a plurality of, for example, two boss hole portions, that is, a supply side hole portion 51 and a discharge side hole portion 52 formed in the radial direction of the inner boss portion 45 from the outer peripheral surface. It is formed to penetrate the peripheral surface. In addition, the phase of both the holes 51 and 52 is not 180 °, and the angle θ formed by the straight line passing through the center of the supply side hole 51 and the straight line passing through the center of the discharge side hole 52 is, for example, 120 ° ( FIG. 11).

  Between the inner peripheral surface of the inner boss portion 45 and the outer peripheral surface of the shaft end portion 19 of the rotary shaft body 3, a collar member 53 for bearing pressing, a seal member 54 for preventing grease leakage, and a snap ring 55 are provided. It is arranged. The cylindrical collar member 53 is fixedly fitted to the outer peripheral surface of the round shaft-shaped shaft end portion 19, and the seal member 54 is interposed between the outer peripheral surface of the collar member 53 and the inner peripheral surface of the inner boss portion 45. Is arranged.

  In addition, between the outer peripheral surface of the collar member 53 and the inner peripheral surface of the inner boss portion 45 and between the inner end surface of the bearing 32 and the seal member 54, a circular annular ring communicated with both the hole portions 51 and 52. A space (grease chamber) 56 is formed. Then, grease (lubricating oil) for lubricating the bearing 32 is directly supplied from the annular space 56 into the bearing 32, and in response to this supply, old dirty grease is directly discharged from the bearing 32 to the annular space 56. The As is apparent from FIG. 9, grease is discharged from the portion of the bearing 32 opposite to the axial end surface 3 a side of the rotating shaft 3 to the annular space 56.

  Here, as shown in FIGS. 10 to 12 and the like, the supply-side grease flow passage 61 through which the grease supplied to the bearing 32 flows communicates with the supply-side hole 51 via the supply-side communication space 62, and A discharge-side grease flow path 63 through which grease discharged from the bearing 32 flows communicates with the discharge-side hole 52 via the discharge-side communication space 64.

  The supply-side grease flow path 61, the supply-side communication space (supply-side clearance) 62, the supply-side hole 51, the annular space 56, the discharge-side hole 52, the discharge-side communication space (discharge-side clearance) 64) In the discharge-side grease flow path 63, a grease flow path section (grease path section) 60 in which grease is filled and the grease can flow is configured. The internal space of the grease nipple 35 communicates with the upstream end portion of the supply-side grease passage 61, and the grease outlet hole portion 42 communicates with the downstream end portion of the discharge-side grease passage 63.

  FIG. 7 shows a rectangular plate-shaped grease flow path forming body (grease guide plate) 66. The grease flow path forming body 66 includes, in addition to the supply-side grease flow path 61 and the discharge-side grease flow path 63, A circular boss insertion hole 67 connected to the grease flow paths 61 and 63 and a plurality of (for example, four) bolt holes 68 positioned at the corners are formed. Each grease flow path 61, 63 has dog-shaped holes 61a, 63a located in parallel to each other.

  FIG. 8 shows a rectangular plate-like contact plate (rear plate) 71 having the same size as the grease flow path forming body 66, and the contact plate 71 includes a supply-side communication space 62 and a discharge-side communication. In addition to the communication space 64, a circular boss insertion hole 72 connected to the communication spaces 62, 64 and a plurality of (for example, four) bolt holes 73 positioned at the corners are formed. One surface of the contact plate 71 is a contact surface 74 that contacts the grease flow path forming body 66 in a planar shape, and a cylindrical guard 75 is formed on the other surface of the contact plate 71. It is fixed.

  The plate-like grease flow path forming body 66 and the contact plate 71 are attached to the inner surface of the side plate main body 36 of the side plate portion 31 of the machine body 2 by a fixture 76 in a state of being in contact with each other and overlapping. . The fixture 76 includes, for example, a bolt 77 and a nut 78. The bolt shaft portion of the bolt 77 is inserted into the bolt holes 40, 68, 73, and the nut 78 is screwed onto the inserted bolt shaft portion. Yes.

  Thus, the grease flow path forming body 66 and the contact plate 71 are attached to the inner surface of the side plate body 36 of the side plate portion 31 by the fixture 76, and the boss insertion hole 67 of the grease flow path forming body 66 and the contact plate 71 is provided. , 72 is inserted through the bearing boss 38 of the side plate portion 31. And the grease flow path formation body 66 and the contact plate 71 are sandwiched between the support step portion 49 of the bearing boss 38 and the inner surface of the side plate body 36 (see FIG. 9).

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

  When the farm work machine 1 is used to cut, for example, unnecessary stems and leaves (a material to be cut) of the crop planted on the straw in the field, the tractor advances with the farm work machine 1 connected to the rear part of the tractor. The rotary shaft 3 is rotated at a high speed in a predetermined direction by the power from the tractor while moving on the field in the traveling direction by traveling.

  Then, while the plurality of claws 4 rotate together with the rotating shaft 3 at a high speed in a predetermined rotation direction, the stalks and leaves of the crops planted on the straw of the field are shredded.

  Here, for example, when performing the operation of injecting grease for lubricating the bearing 32 during maintenance, the operator uses, for example, a grease gun (not shown) to supply the grease from the grease nipple 35 to the supply-side grease flow path. Inject into 61.

  Then, the grease sequentially flows through the supply-side grease flow path 61, the supply-side communication space 62, the supply-side hole 51, and the annular space 56, and is supplied into the bearing 32.

  Further, when new grease is supplied into the bearing 32 in this way, old dirty grease in the bearing 32 is discharged so as to be pushed out from the bearing 32, and the annular space portion 56, the discharge side hole portion 52, and the discharge side link are discharged. It flows sequentially through the common space 64 and the discharge-side grease flow path 63 and is pushed out from the grease outlet hole 42 of the side plate portion 31.

  For this reason, the operator visually inspects the grease coming out from the grease outlet hole 42 and injects new grease until the contaminated grease does not come out of the grease outlet hole 42.

  According to the agricultural machine 1, the grease nipple 35 for injecting grease into the supply side grease passage 61 of the grease passage forming body 66 is attached to the side plate portion 31 of the body 2, and the grease flow Since the grease outlet hole 42 communicating with the discharge-side grease flow path 63 of the path forming body 66 is formed in the side plate part 31 of the machine body 2, the operator can easily inject grease during maintenance, etc. In addition, by visually observing the grease that comes out from the grease outlet hole 42, the completion of the grease injection operation (completion of grease filling) can be easily confirmed.

  In addition, since the grease outlet hole 42 is formed in the side plate 31 so as to be positioned in the vicinity of the grease nipple 35, it is easy to observe the grease coming out from the grease outlet hole 42 while visually observing the grease. Can be injected.

  Further, since grease is discharged from the portion of the bearing 32 lubricated with grease on the side opposite to the axial end surface side of the rotating shaft body 3 (rotary object main body side), old dirty grease can be removed. It can be discharged efficiently.

  Further, a general-purpose product can be used for the bearing 32, and the manufacturing cost can be reduced.

  Note that the agricultural working machine 1 may have a configuration in which the phase of both the holes 51 and 52 of the bearing boss 38 is 180 °, as in the second embodiment shown in FIGS. 13 to 15, for example.

  In other words, in this second embodiment, the supply side hole 51 and the discharge side hole 52 are formed in the bearing boss 38 at intervals of 180 ° in the circumferential direction so as to face each other. The angle θ formed by the straight line passing through the center of the portion 51 and the straight line passing through the center of the discharge side hole 52 is 180 ° (see FIG. 15). In other words, the supply side hole 51 and the discharge side hole 52 are arranged on a straight line passing through the center of the bearing boss 38 in a side view.

  Further, in the agricultural machine 1, for example, as in the third embodiment shown in FIG. 16, in order to prevent the leakage of grease to the outside, the O-ring 81 which is an elastic body for preventing grease leakage is provided with a side plate body 36. A configuration may be adopted in which the circular boss insertion hole portion 82 is disposed between the peripheral portion of the circular boss insertion hole portion 82 and the outer peripheral surface of the cylindrical bearing boss 38.

  Furthermore, it is not limited to the configuration provided with the contact plate 71 that contacts the grease flow path forming body 66 that is a grease guide plate, for example, without the contact plate 71, on one side of the grease flow path forming body, A configuration in which the supply-side grease flow path and the discharge-side grease flow path are each formed in a groove shape may be employed.

  In addition, the grease nipple 35 and the grease outlet hole 42 are not limited to the same configuration provided in the left and right side plate portions 31, respectively. For example, on the side where the transmission case portion 28 is not provided, the grease nipple 35 and the grease outlet are provided. It is possible to bring the hole 42 closer to the axial center side of the rotary shaft 3.

  Furthermore, the support body that rotatably supports the rotating shaft body 3 via the bearing is not limited to the side plate portion 31 of the machine body 2, and may be another part of the machine body 2, another support plate, or the like.

  Further, the agricultural machine 1 can be of any type, such as a rotary or a harrow, in addition to a mowing machine such as a flare mower.

  In addition, although several embodiment of this invention was described, it is also possible to combine the structure of each said embodiment suitably in the range which does not deviate from the summary of this invention.

1 Agricultural machine 2 Airframe 3 Rotating shaft
3a Axial end face
28 Transmission case
31 Side plate part as support
32 bearings
35 Grease nipple
36 side plate body
42 Grease outlet hole
61 Supply-side grease flow path
63 Discharge-side grease flow path
66 Grease channel forming body

Claims (4)

A rotating shaft body;
A support that rotatably supports the rotating shaft through a bearing;
A grease flow path forming body attached to the support and formed with a supply-side grease flow path through which grease supplied to the bearing flows and a discharge-side grease flow path through which grease discharged from the bearing flows;
A grease nipple attached to the support and for injecting grease into the supply-side grease flow path;
A grease outlet hole formed in the support and communicating with the discharge-side grease flow path;
The support has a plate-like side plate body,
The grease nipple is attached to the side plate body,
The agricultural work machine, wherein the grease outlet hole is formed in the side plate body. A rotating shaft body;
A support that rotatably supports the rotating shaft through a bearing;
A grease flow path forming body attached to the support and formed with a supply-side grease flow path through which grease supplied to the bearing flows and a discharge-side grease flow path through which grease discharged from the bearing flows;
A grease nipple attached to the support and for injecting grease into the supply-side grease flow path;
A grease outlet hole formed in the support and communicating with the discharge-side grease flow path;
The agricultural work machine, wherein the grease outlet hole is formed so as to be positioned in the vicinity of the grease nipple. A rotating shaft body;
A support that rotatably supports the rotating shaft through a bearing;
A grease flow path forming body attached to the support and formed with a supply-side grease flow path through which grease supplied to the bearing flows and a discharge-side grease flow path through which grease discharged from the bearing flows;
A grease nipple attached to the support and for injecting grease into the supply-side grease flow path;
A grease outlet hole formed in the support and communicating with the discharge-side grease flow path;
The support is a side plate portion of the aircraft,
The grease nipple protrudes from the outer surface of the side plate portion,
The aircraft has a transmission case portion attached to the side plate portion,
The grease nipple and the grease outlet hole are located in a portion of the side plate that is not covered with the transmission case. The agricultural working machine according to any one of claims 1 to 3, wherein grease is discharged from a portion of the bearing opposite to the end surface side in the axial direction of the rotating shaft body.

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