JP2008283884A - Working machine for weeding and weeder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique which can suitably crush weeded grass and can reduce power necessary for the crushing. <P>SOLUTION: A working machine for weeding is provided with a cutter case 10 for forming a conveyance space above cutter 16 and a shaft 15 for guiding back grass weeded with the cutters 16 above the shaft 15, and the cutter case 10 is constituted so that a distance between the inside of the cutter case 10 and the outer periphery L of a cutter 16-passing region is first minimized behind a position A which is placed at a position vertically upper on the axis O of the shaft 15. Therefore, the minimal space position can be ensured behind the position (A), and a wider region can be ensured in front of the position. Hence, force for passing through a narrow region is not needed in a region for lifting the weeded grass against the gravity, when conveying the weeded grass. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a self-propelled or riding-type mowing work machine such as a hammer knife mower and a mowing work machine that can be attached to the work machine.

  For example, a mowing working machine such as a hammer knife mower is used to mow weeds and trees that grow on sloped lands such as dikes and rough terrain such as wasteland (Patent Document 1). The mowing work machine cuts and crushes grass and stems using the force generated by the built-in engine.

  In such a mowing work machine, there is known a technique that prevents the passage inside the mowing work machine from being clogged by the cut grass (Patent Documents 2 and 3).

JP-A-11-225530 JP-A-10-248351 Japanese Patent Laid-Open No. 11-275924

  As described above, with a mowing machine such as a hammer knife mower, a large amount of weeds is cut by rotating the cutter at high speed while running, and the cut grass and stalks are passed through the vicinity of the cutter and crushed. And discharge to the outside.

  In such a mowing work machine, for example, immediately after the position where the grass or stem is cut, the area where the grass or the like is conveyed is a cutter so that the cut grass or stem contacts the cutter and is crushed. A region is formed such that there is only a predetermined small interval from the outer periphery through which the

  The cutter is rotationally driven by an engine, a motor, or the like of a mowing working machine, and it is required to reduce power necessary for driving the cutter as much as possible.

  This invention is made | formed in view of the above-mentioned problem, The objective is to provide the technique which can reduce the required motive power while being able to crush the cut grass appropriately.

  In order to achieve the above object, the present invention has been made paying attention to a position where a limited area for crushing cut grass or the like with a cutter is formed.

  The working machine for mowing according to the first aspect of the present invention includes a shaft (15) provided with a mowing cutter (16) on the front side of the mowing centering on an axis (O) substantially parallel to the mowing surface. A mowing work machine (1) for cutting grass by rotating from below to above, covering the upper side of the cutter (16) and the shaft (15) with respect to the mowing surface from the front to the rear, The housing (10) includes a housing (10) that forms a conveyance space for guiding the grass cut by the cutter (16) to the upper side of the shaft (15) and conveying the grass to the rear. The housing (10) is provided on the shaft (15). Behind the first position (A) which is substantially vertically above the mowing surface with respect to the axis (O), the inner surface of the housing (10) and the outer periphery (L) of the passage region of the cutter (16) Distance is configured for the first time in such a way that the shortest.

  In the working machine for mowing, the housing (10) includes the inner surface of the housing (10) and the cutter at a second position (C) including the shaft (O) and intersecting a plane substantially parallel to the mowing surface. The distance from the outer periphery (L) of the passage region of (16) may be configured to be the shortest for the first time.

  In the mowing work machine, the distance between the inner surface of the housing (10) and the outer periphery (L) of the passage region of the cutter (16) is greater than the second position (C). You may be comprised so that it may become short gradually from the front side (B).

  In the mowing work machine, the cutter (16) is swingably connected to the shaft (15) by a cutter connecting portion (17), and the housing (10) is connected to the cutter connecting portion ( 17) In the vicinity of the position (B) that includes the uppermost position and intersects with a plane substantially parallel to the mowing surface, the distance between the inner surface of the housing (10) and the outer periphery (L) of the passage region of the cutter (16) is It may be configured to be the shortest for the first time.

  Moreover, the mowing work machine according to the second aspect of the present invention can be mounted on a traveling work machine (2, 3), and the mowing surface of the shaft (15) provided with the mowing cutter (16) is provided. A mowing machine (4) rotatable about a shaft (O) substantially parallel to the upper side from the lower side of the mowing front side, wherein the mowing surfaces of the cutter (16) and the shaft (15) A housing (10) that covers the upper side from the front to the rear and forms a conveyance space for guiding the grass cut by the cutter (16) to the upper side of the shaft (15) and conveying it to the rear. The housing (10) is located behind the first position (A) which is substantially vertically above the mowing surface with respect to the axis (O) of the shaft (15), and the inner surface of the housing (10) and the housing (10). Cutter The distance between the outer periphery of the passage region (L) of (16) is configured for the first time so that the shortest.

  The mowing work machine according to the third aspect of the present invention is a mowing work machine (1) that cuts grass while traveling, and is provided on the work vehicle main body (2) and below the work vehicle main body. A traveling body (3), and a mowing part (4) provided on the front side of the work vehicle main body, the mowing part has a transport path for transporting the cut grass from the front to the rear, The conveyance path is configured such that the cross-sectional area of the conveyance path on the outlet side is smaller than that on the inlet side.

  According to the working machine for mowing according to the first aspect of the present invention, the distance between the inner surface of the housing (10) and the outer periphery (L) of the passage area of the cutter (16) necessary for crushing the cut grass is small. Since the shortest area is first arranged at a position behind the first position, it can be a wider area in front of the first position. For this reason, when the mowed grass is transported, it is not possible to pass the region where the distance is the shortest in the range where the mowed grass is lifted against gravity, so that necessary power can be reduced. In addition, in the position behind the first position, it is necessary to pass the area of the size necessary for crushing, but in this case, the gravity of the cut grass passes through the area Since it works, the required power can be reduced. Furthermore, since a relatively large area can be secured for transporting grass at a position immediately after being cut, it is appropriately prevented that the grass that is about to be cut will be crushed by the cut grass. This makes it possible to appropriately reduce the remaining cutting.

  In addition, the housing (10) has an inner surface of the housing (10) and a passage region of the cutter (16) at a second position (C) including the axis (O) and intersecting a plane parallel to the mowing surface. If it is configured such that the distance to the outer periphery (L) is the shortest for the first time, the required power can be reduced more effectively.

  Further, the distance between the inner surface of the housing (10) and the outer periphery (L) of the passage region of the cutter (16) is gradually shortened from the front side (E) to the second position (C). If it does, it can prevent that the grass etc. which are conveyed are blocked, and can reduce required motive power.

  Moreover, according to the mowing work machine according to the second aspect of the present invention, the distance between the inner surface of the housing (10) and the outer periphery (L) of the passage region of the cutter (16) necessary for crushing the cut grass. Since the region having the shortest distance is arranged for the first time at a position behind the first position, a region wider than that can be formed in front of the first position. For this reason, when the mowed grass is transported, it is not possible to pass the region where the distance is the shortest in the range where the mowed grass is lifted against gravity, so that necessary power can be reduced. In addition, at a position behind the first position, a region having a predetermined limited area necessary for crushing the grass cut for crushing can be secured at a position behind the first position. In front of the position, the area can be wider than that area. For this reason, when the cut grass is transported, no force is required to pass through a narrow area in the range where the cut grass is lifted against gravity, so that the necessary power can be reduced. In addition, it is necessary to pass an area necessary for crushing behind the first position, but in this case, it is necessary because the gravity of the cut grass works to pass through the area. Power can be reduced. Furthermore, since a large area can be secured for transporting grass at a position immediately after being cut, appropriately prevent the grass to be cut from being crushed by the cut grass. Therefore, the remaining cutting can be appropriately reduced.

  Further, according to the mowing machine according to the third aspect of the present invention, the cross-sectional area of the transport path on the entrance side of the cut grass can be secured widely, so that the cut grass will be used to cut from now on. It is possible to appropriately prevent the grass being crushed from being crushed, and to reduce the uncut residue appropriately.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In this embodiment, a “hammer knife mower” will be described as an example of the “mowing working machine”.

  FIG. 1 is a perspective view of a hammer knife mower 1. The hammer knife mower 1 is a machine that cuts and crushes weeds, small trees, and the like by traveling while rotating a cutter 16 (see FIG. 2) such as a hammer at a high speed. The hammer knife mower 1 includes, for example, a vehicle main body 2 and a crawler 3 as “work machines” that can travel, and a work machine 4 as “mowing work machines”.

  A crawler 3 is provided below the vehicle body 2. The vehicle body 2 is covered with an exterior 5. An engine (not shown) and a hydraulic device (not shown) are accommodated in the exterior 5 of the vehicle body 2.

  A cover 6 is attached to the upper side of the vehicle body 2 so as to be openable and closable. The base end side of the cover 6 is rotatably attached to the front side of the vehicle body 2. The front end side of the cover 6 is provided so as to extend toward the control device 8 side. Thereby, the cover 6 is provided so that opening and closing is possible so that the upper side of the vehicle main body 2 may be covered. By opening the cover 6, the operator can perform maintenance of the internal engine, hydraulic machine, and the like. A step 7 is provided in the lower rear portion of the vehicle body 2. The operator can operate the hammer knife mower 1 in step 7.

  A work machine 4 is mounted on the front side of the vehicle body 2 so as to be adjustable up and down. When mowing, the work machine 4 is adjusted to a predetermined height. The work machine 4 includes, for example, a cutter case 10 as an example of a “housing”, a cutter cover 11, links 12 on both left and right sides, springs 13 on both left and right sides, sleds 14 on both left and right sides, and an example of a “shaft”. As a rotating shaft 15 (see FIG. 2) and a plurality of cutters 16 (see FIG. 2).

  The cutter case 10 covers the periphery of the rotary shaft 15 and the cutter 16, for example, the side surface and the upper side of the rotary shaft 15 and the cutter 16, and removes grass and the like cut by the cutter 16 from the upper side of the rotary shaft 15 and the cutter 16. The conveyance area | region conveyed toward is formed. A cutter cover 11 is attached to the front lower portion of the cutter case 10 via a link 12 and a spring 13 so as to be opened and closed. With this configuration, the opening amount of the cutter cover 11 changes according to the height of the weeds or the like that are the objects to be cut. When the height of weeds is low, the opening amount of the cutter cover 11 is small. As a result, pebbles and the like are prevented from splashing forward from within the cutter case 10. When the height of the weeds is high, a force in the opening direction (upward) is applied to the cutter cover 11, and the amount of opening of the cutter cover 11 increases. Thereby, a large amount of tall weeds can be taken into the cutter case 10 and crushed. A sled 14 is provided below the both side surfaces of the cutter case 10.

  FIG. 2 is a front view showing the cutter cover 11 in an opened state. The rotating shaft 15 provided in the cutter case 10 is rotated by, for example, a hydraulic motor. In the present embodiment, the rotating shaft 15 is rotated in the upper cut direction, that is, in the direction from the lower side to the upper side through the front surface (front side in the drawing). The rotary shaft 15 is provided with a plurality of hammer knife type cutters 16 spaced apart in the axial direction. The cutter 16 is connected to the rotating shaft 15 via a cutter connecting portion 17 so as to be swingable.

  FIG. 3 is a side sectional view of the work machine 4.

  FIG. 3 shows the positional relationship between the ground G as a mowing surface and the working machine 4 when performing normal mowing, and the working machine 4 is moved in the direction of arrow M when mowing. Therefore, the left side of the drawing shows the front side during mowing, and the right side of the drawing shows the rear side.

  The rotary shaft 15 is driven to rotate clockwise (R direction) about an axis O parallel to the ground G. The rotating shaft 15 is provided with a cutter 16. When the rotary shaft 15 rotates, the cutter 16 passes through a region inside the outer periphery L (referred to as cutter outer periphery). Since the cutter 16 passes in the area inside the outer periphery L, grass and the like existing in this range are crushed by the cutter 16.

  Here, description will be made using an angle formed by a side extending forward from the axis O in a plane perpendicular to the axis O. For example, the immediately preceding direction with respect to the axis O is 0 degrees, the angle increases clockwise about the axis O, the position directly above the axis O is 90 degrees, and the immediately following direction with respect to the axis O. Is represented as 180 degrees.

  The inner surface of the cutter case 10 is configured such that the distance from the outer periphery L is, for example, 146.1 mm at a position of 30 degrees with respect to the axis O, and further gradually increases until the position B reaches 150 degrees. The distance to L is shortened, and at the position B of 150 degrees, the distance to the outer periphery L is the shortest (for example, 109 mm) for the first time. Here, the position B includes a position where the cutter connecting portion 17 that connects the cutter 16 to the rotary shaft 15 is located at the uppermost position (uppermost position), and is in the vicinity of a position that intersects a plane substantially parallel to the mowing surface. . The shortest distance is a distance required for crushing cut grass or the like conveyed above the rotary shaft 15 to a desired size or less. Here, the position where the distance between the inner surface of the cutter case 10 and the outer periphery L is the minimum is the minimum clearance position. The inner surface of the cutter case 10 is configured such that the distance from the outer periphery L gradually increases after 150 degrees. According to this configuration, since the distance between the outer periphery L of the cutter 16 and the inner surface of the cutter case 10 can be set to a predetermined shortest distance, the cut grass can be crushed to a predetermined size or less. Furthermore, since the minimum clearance position, that is, the portion where the cut area of the cut grass is the narrowest is located behind the position A for the first time, the gravity of the cut grass is a load against the rotation of the cutter 16. In the range considered to be, since the force which pushes the cut grass into the area | region which becomes narrow is unnecessary, the motive power required in the range can be reduced.

  With such a configuration, grass or the like cut off on the left side of the drawing is conveyed rearward in a space between the inner surface of the cutter case 10 above the rotating shaft 15 by the cutter 16 rotated by the rotating shaft 15. At that time, the grass conveyed inside the outer periphery L of the cutter 16 is crushed by the cutter 16. Furthermore, at the minimum clearance position, more grass will enter the outer periphery L of the cutter 16, and the grass can be crushed more effectively with a desired size or less.

  Then, the grass crushed between the rotary shaft 15 and the cutter case 10 is conveyed along the cutter case 10 and falls to the ground immediately before the crawler 3. Thereby, the crushed grass will be stepped on by the crawler 3 passing immediately after it, and it can suppress that the crushed grass soars.

  According to the above embodiment, the minimum clearance position can be secured, and a region wider than the minimum clearance position region can be secured in front of the minimum clearance position. For this reason, when the cut grass is transported, no force is required to pass through a narrow area in the range where the grass is lifted against gravity. Therefore, necessary power can be reduced.

  Next, in order to explain the effect of the working machine for mowing of this embodiment, the difference in power (necessary mowing power) required for rotation of the rotary shaft 15 due to the difference in the minimum clearance position is detailed using the test results. Explained.

  FIG. 4 is a side cross-sectional view of a working machine used in a measurement test of necessary mowing power due to a difference in minimum clearance position.

  In the test, the working machine 4 provided with the cutter case 30 shown in FIG. 4 is used instead of the cutter case 10 shown in FIG.

In the working machine 4 used for the test, the cutter case 30 has an inner surface with a constant interval (147 mm) from the outer periphery L, and the position of the inner surface forming member 30A for forming the inner surface that is the minimum clearance position. It is possible to install by changing. In the test, the inner surface forming member 30A was installed at any one of a 45 degree position, a 90 degree position, and a 180 degree position, and the necessary mowing power in that case was measured. In this test, the amount of grass to be cut was about 0.3 kg / m ^2, and the moving speed of the hammer knife mower 1 in the cutting direction was about 6.0 km / h.

  FIG. 5 is a relationship diagram between the minimum clearance position obtained by the test using the work machine 4 shown in FIG. 4 and the necessary mowing power.

  According to the test, as shown in FIG. 5, when the minimum clearance position is installed at 45 degrees, the necessary mowing power is 12.15 PS, and when installed at 90 degrees, the necessary mowing power is 10.81 PS. It was 9.62 PS when installed at 180 degrees. In addition, when the inner surface forming member 30A was not installed, as shown by a broken line I, the necessary mowing power was 9.33 PS.

  According to FIG. 5, as indicated by the broken line J, when the minimum clearance position is provided ahead of 90 degrees, it is understood that the required power is high. It can also be seen that the necessary power can be reduced as the minimum clearance position is provided rearward. For example, when the minimum clearance position is provided at 180 degrees, the necessary mowing power is almost the same as when the minimum clearance position is not provided, and it can be seen that the power can be effectively reduced.

  From this result, it can be seen that the mowing power required can be reduced by positioning the minimum clearance position further rearward. For example, if the minimum clearance position is set between 90 degrees and 180 degrees, the necessary mowing power can be reduced. When installed in this manner, the size of the rear side of the work machine 4 can be reduced, so that the vertical movement of the work machine 4 can be suppressed and the uncut portion can be reduced.

  FIG. 6 is a diagram illustrating a modification of the cutter case 10 of the work machine 4. FIG. 6 shows the relationship between the cutter case 10 and the cross-sectional area of the conveyance path through which the cut grass between the cutter outer periphery L is conveyed. FIG. 6A shows a graph of the cross-sectional area of the conveyance path formed by the cutter case 10 shown in FIG. As shown in FIG. 6 (a), the cross-sectional area of the conveyance path formed by the cutter case gradually decreases from the entrance side, reaches the minimum cross-sectional area s at a position before 180 degrees, and then the cutting path is cut. The area may be gradually increased.

  As the cutter case 10 in the present embodiment, a cutter case having the following cross-sectional area may be used.

  FIG. 6B is a graph of the cross-sectional area of the conveyance path formed by the cutter case according to the first modification. As shown in FIG. 6B, the conveyance path constituted by the cutter case may have a sectional area that gradually decreases from the entrance side to a minimum sectional area s at a position of 180 degrees. .

  FIG. 6C is a graph of the cross-sectional area of the conveyance path formed by the cutter case according to the second modification. As shown in FIG. 6 (c), the conveyance path constituted by the cutter case maintains a constant cross-sectional area from the inlet side, and the cross-sectional area gradually decreases after 90 degrees, before 180 degrees. The minimum cross-sectional area s may be maintained at the position, and the minimum cross-sectional area s may be maintained.

  FIG. 6D is a graph of the cross-sectional area of the conveyance path formed by the cutter case according to the third modification. As shown in FIG. 6 (d), the transport path constituted by the cutter case maintains a constant cross-sectional area from the inlet side, and the cross-sectional area gradually decreases toward the outlet side (rear side). The minimum cross-sectional area s may be reached at a position before 180 degrees, and thereafter the cross-sectional area may be gradually increased.

  FIG. 6E shows a graph of the cross-sectional area of the conveyance path formed by the cutter case according to the fourth modification. As shown in FIG. 6 (e), the conveyance path formed by the cutter case has a constant cross-sectional area from the inlet side (front side), and the outlet side (rear side) is cut off as it approaches 180 degrees. The area may be decreased so that the minimum cross-sectional area s (the cross-sectional area at the minimum clearance position) is reached at 180 degrees.

  FIG. 7 is a cross-sectional view of the side surface of the working machine 4 in the cutter case according to the fourth modification. In the figure, only a part of the construction of the work machine 4 is illustrated.

  FIG. 7 shows the positional relationship between the ground G as a mowing surface and the working machine 4 during normal mowing, and the working machine 4 is moved in the direction of arrow M when mowing. Therefore, the left side of the drawing shows the front side during mowing, and the right side of the drawing shows the rear side.

  The rotary shaft 15 is driven to rotate clockwise (R direction) about an axis O parallel to the ground G. The rotating shaft 15 is provided with a cutter 16. When the rotary shaft 15 rotates, the cutter 16 passes through a region inside the outer periphery L (referred to as cutter outer periphery). Since the cutter 16 passes in the area inside the outer periphery L, grass and the like existing in this range are crushed by the cutter 16.

  The inner surface of the cutter case 10 is configured such that the distance from the outer periphery L is, for example, 147 mm at a position of 45 degrees with respect to the axis O, and is further 135 from the position of 45 degrees to the position A of 90 degrees. The distance from the outer circumference L is constant up to a position E exceeding the degree.

  Further, the inner surface of the cutter case 10 gradually decreases in distance from the outer periphery L from the position E to the position C of 180 degrees, and at the position C of 180 degrees, the distance from the outer periphery L is the shortest for the first time (for example, 94 mm). This shortest distance is a distance required to crush the cut grass or the like conveyed above the rotary shaft 15 to a desired size or less. Here, the position where the distance between the inner surface of the cutter case 10 and the outer periphery L is the minimum is the minimum clearance position. According to this configuration, since the distance between the outer periphery L of the cutter 16 and the inner surface of the cutter case 10 can be set to a predetermined shortest distance, the cut grass can be crushed to a predetermined size or less. Furthermore, since the minimum clearance position, that is, the portion where the passage area of the cut grass is the narrowest is located behind the position A for the first time, the gravity of the cut grass is a load against the rotation of the cutter 16. In the range considered to be, since the force which pushes the cut grass into the area | region which becomes narrow is unnecessary, the motive power required in the range can be reduced.

  In the present modification, the rear surface 10 </ b> A of the cutter case 10 is configured to be substantially perpendicular to the ground G. Thereby, the size of the work machine 4 can be reduced. For this reason, the space | interval with the vehicle body 2 which mounts the working machine 4 can be narrowed. Since the distance from the mounting position of the vehicle body 2 can be reduced, the influence of the vertical force applied to the work machine 4 from the outside on the vertical movement of the work machine 4 can be reduced, and the remaining cutting is reduced. can do.

  In the present modification, the start position where the distance between the inner surface of the cutter case 10 and the outer periphery L is shortened is, for example, a position E on the rear side of the position D having the same height as the outer periphery L of the cutter 16. Since the position E is a position lower than the outer periphery of the cutter 16, the cut grass is removed in a range where the force by the cutter 16 acts above the horizontal, that is, in a range where power is consumed to lift the grass upward. Since it is not necessary to push into the area | region which becomes narrow, the motive power consumed in the range can be reduced.

  With such a configuration, grass or the like cut off on the left side of the drawing is conveyed rearward in a space between the inner surface of the cutter case 10 above the rotating shaft 15 by the cutter 16 rotated by the rotating shaft 15. At that time, the grass conveyed inside the outer periphery L of the cutter 16 is crushed by the cutter 16. Furthermore, at the minimum clearance position, more grass will enter the outer periphery L of the cutter 16, and the grass can be crushed more effectively with a desired size or less.

  The present invention is not limited to the above-described embodiment. A person skilled in the art can make various additions and changes within the scope of the present invention. For example, as a mowing work machine, a hammer knife mower of a type in which an operator stands and operates behind a vehicle has been described as an example, but the present invention is not limited thereto, and for example, a passenger car type mowing work machine or a hand push It can also be applied to a conventional mowing machine or various agricultural machines.

The perspective view of a hammer knife mower. The front view of a working machine. Side surface sectional drawing of a working machine. Side surface sectional drawing of the working machine used for the measurement of the minimum clearance position. The relationship between the minimum clearance position and the required mowing power. Explanatory drawing of the modification of the cutter case of a working machine. Side surface sectional drawing of the working machine which concerns on a modification.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Hammer knife mower, 2 ... Vehicle main body, 3 ... Crawler, 4 ... Working machine, 5 ... Exterior, 6 ... Cover, 7 ... Step, 8 ... Steering device, 10 ... Cutter case, 11 ... Cutter cover, 12 ... Link , 13 ... spring, 14 ... warp, 15 ... rotating shaft, 16 ... cutter, L ... outer periphery.

Claims (6)

The mowing operation for mowing by rotating the shaft (15) provided with the cutter (16) about the axis (O) substantially parallel to the mowing surface upward from the lower side of the mowing front side. Machine (1),
The upper part of the cutter (16) and the shaft (15) with respect to the mowing surface is covered from the front to the rear, and the grass cut by the cutter (16) is guided upward of the shaft (15) to the rear. A housing (10) that forms a transport space for transporting
The housing (10) has an inner surface of the housing (10) and the cutter behind the first position (A) that is substantially vertically above the mowing surface with respect to the axis (O) of the shaft (15). The mowing working machine configured so that the distance from the outer periphery (L) of the passing region of (16) is the shortest for the first time. The housing (10) includes an inner surface of the housing (10) and a passage area of the cutter (16) at a second position (C) that includes the axis (O) and intersects a plane substantially parallel to the mowing surface. The mowing working machine according to claim 1, wherein the working machine is configured such that the distance from the outer periphery (L) is the shortest for the first time. In the housing (10), the distance between the inner surface of the housing (10) and the shaft (O) of the shaft (15) gradually decreases from the front side (E) to the second position (C). The working machine for mowing according to claim 2 configured as described above. The cutter (16) is swingably connected to the shaft (15) by a cutter connecting portion (17).
The housing (10) includes the uppermost position of the cutter connection portion (17) and in the vicinity of the position (B) intersecting a plane substantially parallel to the mowing surface, the inner surface of the housing (10) and the cutter (16) The working machine for mowing of Claim 1 comprised so that the distance with the outer periphery (L) of the passage area | region may become the shortest for the first time. Mowing the shaft (15), which can be mounted on a traveling work machine (2, 3) and provided with a mowing cutter (16), about an axis (O) substantially parallel to the mowing surface. A mowing machine (4) that can rotate upward from below the front side,
The upper part of the cutter (16) and the shaft (15) with respect to the mowing surface is covered from the front to the rear, and the grass cut by the cutter (16) is guided upward of the shaft (15) to the rear. A housing (10) that forms a transport space for transporting
The housing (10) has an inner surface of the housing (10) and the cutter behind the first position (A) that is substantially vertically above the mowing surface with respect to the axis (O) of the shaft (15). The mowing machine configured so that the distance from the outer periphery (L) of the passage region of (16) is the shortest for the first time. A mowing machine (1) for cutting grass while traveling,
A work vehicle body (2);
A traveling body (3) provided on the lower side of the work vehicle body;
A mowing part (4) provided on the front side of the work vehicle body,
The mowing part is
A mowing work machine having a transport path for transporting cut grass from the front to the back, wherein the transport path is configured such that the cross-sectional area of the transport path on the outlet side is smaller than that on the inlet side. .

Images