JP2019187266A - Mower implement - Google Patents

Abstract

To provide a mower implement capable of reducing a load of an operator.SOLUTION: A mower implement 1 includes a machine body 2 connected to a tractor T, a work body 3 for performing a mowing work, and a gage roller body 4 for setting a work height of the work body 3. The mower implement 1 also includes a manual elastic body 5 capable of adjusting the work height of the work body 3 by operation of a handle part 7. When using one tractor Ta, a support frame 18 is mounted in a first state, and when using another tractor Tb, the support frame 18 is mounted in a second state which is a front/rear reversed state.SELECTED DRAWING: Figure 13

Description

  The present invention relates to a mowing machine that performs mowing work.

  Conventionally, for example, a mowing machine described in Patent Document 1 below is known.

  This conventional mowing work machine includes a machine body connected to the rear part of a tractor that is a traveling vehicle, a work body that is provided on the machine body and performs a mowing work while rotating, and is provided on the machine body and grounded to the ground. A gauge wheel for setting the working height and a handle for moving the gauge wheel up and down are provided.

  Here, since there are a plurality of types of tractors having different configurations of, for example, a three-point link (work machine support device), the connection postures of the tractor and the work machine are various. Therefore, depending on the tractor, there are cases where the handle position is too far for the operator to reach the tractor, and conversely, the handle position is too close and the handle may interfere with the tractor when the work implement is raised up. There is.

  Therefore, in order to avoid such problems in conventional mowers, for example, a plurality of handles having different lengths (a plurality of replacement parts) are prepared in advance, and the handle having the optimum length according to the tractor is prepared. It corresponds by the method of exchanging.

JP 2009-268444 A

  However, preparing a plurality of replacement parts in advance, as in the conventional mower, as described above, increases the cost, and takes time to store the replacement parts.

  This invention is made | formed in view of such a point, and it aims at providing the mowing working machine which can aim at a worker's burden reduction.

  A mowing machine according to the present invention includes a machine body having a traveling vehicle connecting portion coupled to a traveling vehicle, a work body provided on the machine body for performing mowing work, provided on the machine body, and grounded to a work target surface. The grounding body for setting the working height of the working body and the operation unit operated by an operator on the traveling vehicle, and the adjustment capable of adjusting the working height of the working body by operation of the operating part The airframe has a detachable support member that supports the adjusting means, and when the traveling vehicle connecting portion is connected to a traveling vehicle, the support member is a first member. When the traveling vehicle connecting portion is connected to another traveling vehicle different from the one traveling vehicle and used, the support member is attached in the second state.

  According to the present invention, the burden on the operator can be reduced.

It is a side view of the mowing work machine (at the time of the 1st state of a support member) concerning one embodiment of the present invention. It is a side view (working height differs from FIG. 1) of a mowing working machine same as the above. It is a top view of a mowing working machine same as the above. It is a partial left side view of the same mowing machine. It is a partial right view of the same mowing machine. It is a fragmentary sectional view of the back view of the same mowing machine. It is sectional drawing of the rotation fulcrum part of the roller support member of the same mowing machine. It is a principal part rear view of the same mowing machine. It is a principal part side view of a mowing work machine same as the above. It is A arrow directional view in FIG. It is a side view of a grass-cutting machine same as the above (at the time of a 2nd state of a supporting member). It is a B arrow line view in FIG. (A) is a figure of the state which connected the mowing work machine same as the above to one tractor, (b) is a figure of the state connected to the other tractor. It is a figure which shows the modification of the adjustment means of a mowing work machine same as the above.

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

  In the figure, reference numeral 1 denotes a mowing machine. The mowing machine 1 is connected to, for example, a rear portion of a tractor T, which is a traveling vehicle, and performs mowing work while moving forward (traveling direction) by the forward traveling of the tractor T. Is.

  In other words, the mowing machine 1 moves the grass forward by the traveling of the tractor T, and cuts the grass (cutting object) that grows on the ground G, which is the work target surface, at a desired cutting height and crushes it finely. is there.

  The mowing work machine 1 includes a machine body 2 connected to a three-point link (work machine support device) at the rear of the tractor T, and a work body that is rotatably provided on the machine body 2 and performs the mowing work while rotating in a predetermined direction. 3 is provided.

  Further, the mowing machine 1 is provided on the machine body 2 so as to be able to turn in the vertical direction about the turning center axis X that is a turning fulcrum, and is grounded to the ground G and the working height (cutting height) of the working body 3. A gauge roller body 4 which is a grounding body for setting the height), and a manually extendable body 5 which is stretchable between the gauge roller body 4 and the machine body 2 and can be extended and contracted to adjust the work height.

  The manual expansion / contraction body 5 is expanded / contracted by a manual operation (for example, a handle operation) of an operator riding on the tractor T, and the gauge roller body 4 is rotated with respect to the body 2 by the expansion operation of the manual expansion / contraction body 5. The gage roller body 4 rotates about the rotation center axis X with respect to the machine body 2 by rotating downward about the movement center axis X, and the manual expansion body 5 is contracted.

  Therefore, an operator who rides on the tractor T rotates the handle portion 7 which is the operation portion on the upper end side of the manual telescopic body 5 while riding on the tractor T, so that the gauge roller body 4 is moved with respect to the airframe 2. It is possible to adjust the working height of the work body 3 by rotating the desired amount.

  That is, an adjustment means that can adjust the work height of the work body 3 by changing the vertical position of the gauge roller body 4 by operating the handle part (operation part) 7 by an operator (not shown) riding on the tractor T. (Cutting height adjusting means) 8 is constituted by one longitudinal manual expansion / contraction body 5.

  The airframe 2 has a three-point connecting portion 11 that is a traveling vehicle connecting portion that is detachably connected to a three-point link at the rear portion of the tractor T. The three-point connecting portion 11 has a center top pin 12 and left and right lower pins 13. The top pin 12 is attached to the top mast 14, and the lower pin 13 is attached to the lower arm 15.

  The top mast 14 is attached to the front end side of the mast frame 16, and the mast frame 16 is a support member that rotatably supports the upper end side of the manual telescopic body 5 via a tumbler (rotating member) 17. A certain support frame (handle frame) 18 is detachably attached.

  Specifically, as shown in FIGS. 8 and 9, the mast frame 16 includes a pair of left and right plate-like members 16a that are spaced apart from each other, and two front and rear cylindrical members fixed to the two plate-like members 16a. It has collar members 16b and 16c. The top mast 14 has a pair of left and right plate-like members 14a facing each other, two upper and lower cylindrical collar members 14b and 14c fixed to the both plate-like members 14a, and a top pin 12. And a U-shaped member (mast portion) 14d.

  The upper portion of both plate-like members 16a of the mast frame 16 constitutes a mounting portion (supporting member mounting portion) 20, and the mounting portion 20 has a front hole 21 and a rear hole 22 formed respectively. Yes.

  On the other hand, one support frame 18 has an attachment portion 25 attached to the outside of the attached portion 20 of the mast frame 16 by two attachment means 23, 24 on the lower side, and the manual telescopic body 5 Is attached to the front portion of the mounting portion 25 so as to be detachably supported by the tumbler 17 in a detachable manner.

  The attachment portion 25 is formed with a first hole 27 and a second hole 28 corresponding to the front hole 21 and the rear hole 22 of the attached portion 20, respectively. That is, the same holes 27 and 28 are formed at both ends in the front-rear direction of the attachment portion 25. The support portion 26 includes a pair of left and right opposing plate portions 26a that are spaced apart from each other, and a connecting plate portion 26b that connects ends of the two opposing plate portions 26a along the longitudinal direction. .

  Furthermore, an attachment hole 26c is formed in the upper end portion of each counter plate portion 26a of the support portion 26, and the tumbler 17 is removably inserted into the attachment hole 26c. That is, the tumbler 17 is detachably attached to the upper end side of the support portion 26, and the screw rod 81 of the manual expansion / contraction body 5 is inserted into the insertion hole 17a of the tumbler 17.

  8 and 9, the support frame 18 is attached to the attachment portion 20 of the mast frame 16 by the attachment means 23 and 24 in the first state (the posture in which the support portion 26 stands). It is in the state. That is, in this first state, the bolts of the attachment means 23 are installed in the first hole 27 of the attachment portion 25 of the support frame 18, the front hole 21 of the attachment portion 20 of the mast frame 16, and the collar member 14b of the top mast 14. 23a is inserted and a nut 23b is screwed into the bolt 23a, and the second hole 28 of the mounting portion 25 of the support frame 18, the rear side hole 22 of the mounted portion 20 of the mast frame 16, and the mast frame 16 A bolt 24a of the attachment means 24 is inserted into the collar member 16c, and a nut 24b is screwed to the bolt 24a. The top mast 14 and the support frame 18 are fastened to the mast frame 16 by the front mounting means 23.

  Further, the support frame 18 is reversed from the first state (the state in which the support portion 26 stands) from the first state (the support portion 26 is in a posture in which the support portion 26 stands) by reversing back and forth (rotating 180 degrees so that the front and rear are reversed). In this second state, the second hole 28 of the mounting portion 25 of the support frame 18, the front hole 21 of the mounted portion 20 of the mast frame 16, and the color of the top mast 14 The bolt 23a of the attachment means 23 is inserted into the member 14b, the nut 23b is screwed into the bolt 23a, and the first hole 27 of the attachment portion 25 of the support frame 18 and the attached portion 20 of the mast frame 16 are attached. The bolt 24a of the attachment means 24 is inserted into the rear hole 22 and the collar member 16c of the mast frame 16, and the nut 24b is screwed to the bolt 24a (see FIG. 11).

  In addition to the top mast 14 and the support frame 18, the upper end portion of the stay 29 is attached to the attached portion 20 of the mast frame 16 by attachment means 32. That is, the bolt 32a of the attachment means 32 is inserted into the hole (not shown) of the upper end portion of the stay 29, the hole (not shown) of the attached portion 20 of the mast frame 16, and the collar member 16b of the mast frame 16. The nut 32b is screwed to the bolt 32a.

  Further, the airframe 2 has a mission case 31 at the center in the left-right direction, and the input shaft 33 projects forward from the mission case 31. The input shaft 33 is connected to the PTO shaft of the tractor T via a joint, and the power input to the input shaft 33 is transmitted to the work body 3 by power transmission means (not shown). The power transmission means is housed in the mission case 31, the pipe frame 36, and the pulley cover 37.

  Further, the machine body 2 has a left and right longitudinal cover upper plate 39 that covers the upper side of the work body 3 and left and right cover side plates 40 that cover the sides of the work body 3. A box-shaped pulley cover 37 is disposed outside the left cover side plate 40 of the cover side plates 40.

  Each of the left and right cover side plates 40 is composed of a side plate main body portion 40a and a detachable side plate portion 40b attached to a lower end portion of the side plate main body portion 40a with a fixture (bolts, nuts, etc.) 30 so as to be detachable. Yes.

  The work body (mowing work body) 3 is supported by the cover side plates 40 of the machine body 2 so as to be rotatable, and rotates in the left-right direction and rotated by the power from the power transmission means. And a cutting claw (frail claw) 43 attached to 42.

  As is apparent from FIG. 1, the rotation center axis (rotation fulcrum) X of the gauge roller body 4 with respect to the machine body 2 is within the rotation locus of the work body 3 in a side view and is the rotation axis of the work body 3. Located behind 41. More specifically, when viewed from the side, the rotation center axis X of the gauge roller body 4 is positioned behind the rotation shaft 41 of the work body 3 in the rotation locus of the cutting claw 43, and The rotation axis 41 is positioned below the rotation center axis Y.

  The gauge roller body 4 is provided on the cover side plate 40 of the machine body 2 so as to be rotatable in the vertical direction about the rotation center axis X in the left and right direction, and is supported on the left and right plate-shaped rollers disposed outside the cover side plate 40. A member 46 and a single gauge roller 47 that is a cylindrical rotating member that is supported by both roller support members 46 so as to be rotatable and is grounded to the ground G behind the work body 3 in the horizontal direction. ing.

  The two vertical roller support members (roller frames) 46 that are spaced apart from each other are integrally connected by a connecting member 48 that is elongated in the left-right direction and has a rectangular tube shape. That is, the gauge roller body 4 has a connecting member 48 that is a longitudinal reinforcing connecting member that connects both the left and right roller support members 46, and the upper side of the roller support member 46 is disposed at both ends of the connecting member 48 in the left-right direction. The predetermined portion is fixed by welding or the like. For this reason, the strength of the gauge roller body 4 can be improved, and the occurrence of problems such as bending deformation of the roller support member 46 can be prevented. An attachment member (expandable body attachment member) 49 is fixed to the central portion of the connecting member 48 in the left-right direction, and the lower end portion of the manual expansion / contraction body 5 is rotatably attached to the attachment member 49.

  In addition, a guard 50 that is a plate-like scattering prevention member that is longitudinal in the left-right direction and prevents the grass cut by the working body 3 from scattering backward is fixed to the connecting member 48. The guard 50 is disposed behind the rubber plate 51 attached to the cover upper plate 39 of the machine body 2 and above the gauge roller 47 (see FIG. 4).

  In addition, between the roller support members 46, a plate-shaped scraper 52 that is elongated in the left-right direction for removing deposits such as dirt attached to the outer peripheral surface of the gauge roller 47 is installed. A certain reinforcing pipe 53 is fixed.

  Here, as shown in FIGS. 4 and 6, the left roller support member 46 is fixed to the side plate portion 56 that covers the side of the roller body portion 47 a of the gauge roller 47 and the upper outer surface of the side plate portion 56. The longitudinal reinforcing plate portion 57 and the boss guard portion 58 fixed to the lower end side of the side plate portion 56 are provided.

  The side plate portion 56 has a substantially triangular overlapping portion 59 that overlaps with the cover side plate 40 of the airframe 2 in a side view, and the overlapping portion 59 is disposed near the outside of the cover side plate 40. An interval 60 having a predetermined dimension exists between the outer side plate portion 56 and the inner cover side plate 40 (see FIG. 7). Therefore, the inner surface of these side plate portions 56 and the outer surface of the cover side plate 40 do not contact each other, and the roller support member 46 can be smoothly rotated in the vertical direction with respect to the cover side plate 40.

  The overlapping portion 59 is formed with an arc-shaped long hole (arc hole) 61 centered on the rotation center axis X, and the fixture 30 is inserted into the long hole 61. Therefore, when the roller support member 46 is rotated with respect to the cover side plate 40, the fixture 30 and the side plate portion 56 of the roller support member 46 do not interfere with each other.

  Further, the left side plate portion 56 has a circular boss hole 62, and a cylindrical boss 63 is integrally fixed to the boss hole 62, and a bearing 64 is provided on the inner peripheral side of the boss 63. Is provided. A bearing 64 rotatably supports the distal end side of the shaft portion 47b at the left end of the gauge roller 47, and a collar 65 for preventing grass winding is rotatably mounted on the outer periphery of the proximal end side of the shaft portion 47b. . In FIG. 6, 66 is a grease nipple, 67 is a lid, 68 is a mounting bolt, 69 is a washer, and 70 is a retaining ring.

  As shown in FIG. 5, the right roller support member 46 is symmetrical to the left roller support member 46 described above, but the side plate portion 56 of the right roller support member 46 has an attachment portion 63a. A boss 63 having a detachable attachment is attached. Although not shown, in the right roller support member 46, the tip end side of the shaft portion 47b at the right end of the gauge roller 47 is rotatably supported by the bearing 64 on the inner peripheral side of the boss 63, as in the left side. A collar 65 for preventing cigarette rotation is rotatably mounted on the outer periphery of the base end side of the shaft portion 47b. In addition, the collar 65 for preventing a cigarette is not necessarily required, and a structure without the collar 65 may be used.

  3 and 7 and the like, the left and right roller support members 46 are rotated up and down around the rotation center axis X on the side plate body 40a of the cover side plate 40 of the machine body 2 via the attachment means 71. It is mounted movably.

  The attaching means 71 includes, for example, a bolt 72, a collar 73, a washer 74, and a nut 75. Bolt holes 76 are formed in the side plate main body portion 40a of the cover side plate 40, and color holes 77 and 78 are formed in the side plate portion 56 and the reinforcing plate portion 57 of the roller support member 46.

  The collar 73 is inserted into the collar holes 77 and 78, the bolt 72 is inserted into the collar 73 from the bolt hole 76, and the nut 75 is screwed into the screw shaft portion 72a of the bolt 72, whereby the roller A support member 46 is attached to the cover side plate 40 so as to be rotatable up and down.

  As shown in FIGS. 1, 10, 12, and the like, the manual expansion / contraction body 5 that is a manual expansion / contraction body includes a screw rod (male screw member) 81 that is rotatably supported by a bearing 80, and the screw rod 81. A threaded pipe (female threaded member) 82, which is a long cylindrical member that is screwed together, is attached to the threaded pipe 82 in a detachable manner by a mounting pin 84, and a mounting portion 85 at the lower end is rotatable to the mounting member 49 And a slide pipe (extension member) 83 which is an attached slide member.

  The slide pipe 83 is inserted into the threaded pipe 82 so as to be slidable in the longitudinal direction of the threaded pipe 82, and the projecting length from the threaded pipe 82 can be adjusted. That is, for example, a first pin hole 83a is formed in the upper end portion of the slide pipe 83, and a second pin hole 83b is formed in the middle portion of the slide pipe 83. The slide is made by selecting these pin holes 83a and 83b. The protruding length of the pipe 83 from the threaded pipe 82 can be adjusted.

  The manual telescopic body 5 includes a cylindrical cover 86 that covers the screw rod 81 and an operation handle 87 that is attached to the upper end portion of the screw rod 81 with a bolt 88 and a nut 89. The operation handle 87 is disposed at a position where an operator on the tractor T can manually operate while riding on the tractor T. The operating handle 87 constitutes a handle portion (the operating portion of the adjusting means 8) 7 on the upper end side of the manual telescopic body 5. Further, a bearing 80 is sandwiched between the proximal end surface of the operation handle 87 and the tumbler 17.

  The threaded rod 81 has a male threaded portion 92 with a threaded groove 91 formed on the outer peripheral surface, and the threaded pipe 82 has a female threaded portion 94 with a threaded groove 93 formed on the inner peripheral surface. Further, an anti-blur rubber ring 95 that is in sliding contact with the inner peripheral surface of the cover 86 is provided in the concave portion on the outer peripheral side of the female screw portion 94.

  The female threaded portion 94 of the threaded pipe 82 is screwed into the male threaded portion 92 of the threaded rod 81. For this reason, when an operator riding on the tractor T rotates the operation handle 87 while riding on the tractor T, and the screw rod 81 rotates together with the operation handle 87 by a desired amount, the screw pipe 81 is rotated with respect to the screw rod 81. 82 moves in the axial direction together with the slide pipe 83. As a result, the manual telescopic body 5 expands and contracts, and the gauge roller body 4 rotates up and down in accordance with the expansion and contraction and is positioned and fixed in a desired state. Thus, the work height of the work body 3 is adjusted based on the expansion and contraction of the manual telescopic body 5.

  Next, the operation of the mowing machine 1 will be described.

  For example, when the work height (cutting height) of the work body 3 is adjusted according to the hardness (soil quality) of the ground G or the state of the object to be cut, the work on the cabin (driver's seat) K of the tractor T A person may extend the hand backward while holding the cabin K of the tractor T, hold the handle portion 7 of the manual telescopic body 5 (in other words, the operation portion of the adjusting means 8), and rotate it.

  For example, when an operator riding in the cabin K of the tractor T rotates the operation handle 87 in one direction (contraction direction), the manual expansion / contraction body 5 is contracted in accordance with this operation, and the gauge roller body 4 is moved relative to the body 2. It pivots upward about the pivot center axis X, and as a result, the working height of the working body 3 is lowered. For example, in the state shown in FIG. 1, the working height H1 of the working body 3 is about 20 mm.

  On the other hand, for example, when an operator riding on the cabin K of the tractor T rotates the operation handle 87 in the other direction (extension direction), the manual expansion / contraction body 5 is extended in accordance with this operation, and the gauge roller body 4 is moved to the body 2. On the other hand, it rotates downward about the rotation center axis X, and as a result, the working height of the working body 3 increases. For example, in the state shown in FIG. 2, the working height H2 of the working body 3 is about 60 mm.

  Then, after the working height of the working body 3 is adjusted, when the mowing work machine 1 is moved in the traveling direction by the traveling of the tractor T, the working body 3 performs the mowing work while rotating.

  At this time, the gauge roller body 4 keeps the working height of the working body 3 while traveling while being grounded to the ground G. Therefore, since the working body 3 rotates while moving forward at the working height set by the gauge roller body 4, the grass growing on the ground G is cut at a desired cutting height and finely crushed.

  Here, for example, when using one tractor T shown in FIG. 13A (hereinafter sometimes referred to as “tractor Ta”), the support frame 18 is attached to the mounted portion 20 of the mast frame 16 in the first state. However, the other tractor T shown in FIG. 13B (which has a three-point link configuration different from the tractor Ta and may be referred to as “tractor Tb” below) is used. In this case, in the first state, the handle portion 7 of the manual telescopic body 5 is too close to the cabin K of the tractor Tb, and when the mowing machine 1 is raised up, the handle portion 7 opens a part of the cabin K (for example, rearward opening). There is a risk of malfunctions that interfere with the rear windows.

  Therefore, in order to avoid such a problem, the support frame 18 is changed from the first state to the second state by reversing the front and back of the support frame 18, and the support frame 18 after the change is attached to the attached portion 20 of the mast frame 16. It is sufficient to attach to the second state.

  That is, as shown in FIG. 13B, when the support frame 18 is attached to the attached portion 20 of the mast frame 16 in the second state, the distance L2 between the handle portion 7 and the cabin K is as shown in FIG. It becomes substantially the same as the distance L1 in the case. Therefore, there is no problem that the handle portion 7 and the cabin K interfere with each other when the mowing work machine 1 is raised up (when it is raised). When the support frame 18 is attached in the second state, the attachment pin 84 is inserted into the second pin hole 83b to shorten the protruding length of the slide pipe 83 from the screw pipe 82.

  Further, when the tractor Tb is used in this way, if the support frame 18 is attached in the second state, no problem occurs. However, when the tractor Ta is used, in the second state, the handle portion 7 is reversed from the cabin K. There is a possibility that a problem that the operator's hand cannot reach due to being too far away may occur.

  In order to avoid this problem, the support frame 18 is reversed from the second state to the first state by reversing the front and back of the support frame 18, and the support frame 18 after the change is attached to the attached portion 20 of the mast frame 16. The first state may be attached.

  That is, as shown in FIG. 13A, when the support frame 18 is attached to the attached portion 20 of the mast frame 16 in the first state, the distance L1 between the handle portion 7 and the cabin K is as shown in FIG. It becomes substantially the same as the distance L2 in the case. Therefore, there is no problem that the worker's hand that gets on the cabin K of the tractor T cannot reach. When the support frame 18 is attached in the first state, the attachment pin 84 is inserted into the first pin hole 83a so that the projecting length of the slide pipe 83 from the screw pipe 82 is increased.

  Thus, in the first case shown in FIG. 13A (when a tractor Ta having a standard three-point link is used) and in the second case shown in FIG. 13B (a tractor Tb having a special three-point link). In any case, the distance between the handle 7 and the cabin K when the mowing work machine 1 is lifted up by a different three-point link is substantially the same, and the work on the tractor T The position of the handle portion 7 relative to the person is the same position (including substantially the same position).

  According to the mowing machine 1, the airframe 2 has the detachable support frame 18 that supports the adjusting means 8, and connects the three-point connecting portion 11 of the airframe 2 to the three-point link of one tractor Ta. The support frame 18 is attached to the mounted portion 20 in the first state, and the three-point connecting portion 11 of the airframe 2 is connected to the three-point link of another tractor Tb different from the one tractor Ta. When used, the support frame 18 is attached to the same attached portion 20 in a second state reverse to the first state, so that the appropriate position corresponding to each of a plurality of types of tractors T can be obtained without replacement of parts. The handle portion 7 can be arranged on Therefore, unlike conventional systems, it is not necessary to prepare multiple handles (multiple replacement parts) with different lengths for each tractor, so that waste of replacement parts can be prevented, thereby reducing the burden on the operator. Can be planned.

  Further, the operator who rides on the tractor T operates the handle portion 7 at an appropriate position while riding on the tractor T to rotate the gauge roller body 4 with respect to the machine body 2 by a desired amount. The work height of 3 can be adjusted easily and appropriately, so that high-precision mowing work is possible.

  Further, since the rotation fulcrum (rotation center axis X) of the gauge roller body 4 with respect to the machine body 2 is located in the rotation locus of the work body 3 in a side view, the gauge roller 47 can be brought closer to the work body 3 side. Thus, it is possible to reduce the size, and the length of the manual expansion / contraction body 5 can be made relatively short.

  The manual telescopic body (working height adjustment adjusting means 8) 5 of the mowing machine 1 is not limited to the configuration having the slide pipe 83 shown in FIG. 10 and the like. For example, as shown in FIG. The slide pipe 83 may not be provided, and the threaded rod 81, the threaded pipe 82, etc. may be lengthened. In this structure, the mounting part 85 is formed at the lower end of the threaded pipe 82, and the mounting part 85 is connected to the mounting member 49. Mounted movably.

  Further, the grounding body for setting the working height is not limited to the one made of the gauge roller body 4, and may be made of, for example, a gauge wheel.

  Further, the support member that supports the adjusting means may be, for example, a member that can be changed from the first state to the second state by selecting an attachment position with respect to the attached portion.

DESCRIPTION OF SYMBOLS 1 Mowing working machine 2 Airframe 3 Working body 4 Gage roller body which is a grounding body 5 Manual elastic body 7 Handle part which is an operation part 8 Adjustment means
11 Three-point connecting part that is a traveling car connecting part
18 Support frame as a support member
20 Mounted part
25 Mounting part
26 Support section
82 Threaded pipe that is a cylindrical member
83 Slide pipe that is a sliding member T Tractor that is a traveling vehicle G Ground that is a work target surface

Claims (5)

An airframe having a traveling vehicle coupling portion coupled to the traveling vehicle;
A work body provided on this machine body for performing mowing work,
A grounding body that is provided in the machine body and sets the working height of the working body by grounding on a work target surface;
An operation unit operated by an operator on the traveling vehicle, and an adjustment unit capable of adjusting a work height of the work body by an operation of the operation unit;
The airframe has a detachable support member that supports the adjusting means,
When connecting and using the traveling vehicle connecting portion to one traveling vehicle, the support member is attached in the first state,
The mowing work machine, wherein the support member is attached in the second state when the traveling vehicle connecting portion is used by being coupled to another traveling vehicle different from the one traveling vehicle. The mowing work machine according to claim 1, wherein the support member can be changed from the first state to the second state by turning the support member back and forth. The mowing work machine according to claim 1 or 2, wherein the support member has a mounting portion on the lower side that is detachably attached to the mounted portion, and has a support portion on the upper side that supports the adjusting means. . The adjusting means is constituted by a telescopic manual telescopic body installed between the airframe and the grounding body,
The mowing work machine according to any one of claims 1 to 3, wherein the manual telescopic body has an operation unit on an upper end side, which is operated by an operator on a traveling vehicle. Manual telescopic body
A tubular member;
The mowing work machine according to claim 4, further comprising: a slide member that is slidably inserted into the cylindrical member and capable of adjusting a projecting length from the cylindrical member.

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