Grass cutting machine

Abstract

To provide a mowing implement which can surely prevent a scattered material that scatters to the outer side of a reaping device from scattering to the outer side of a vehicle body even if a ground surface and a travel state are in any state.SOLUTION: There is provided a mowing implement in which second scattering prevention devices 12f, 12r that are suspended from a vehicle body 1 side are provided at positions apart from a reaping device 6 on the front side and the rear side of the reaping device 6, and the second scattering prevention devices 12f, 12r are constituted by a metallic chain 13 that is suspended and provided in a line in the length approaching or contacting a ground surface J over the substantially same width as the width H of an interval part A of left and right crawler travel devices 5L, 5R and one plate-like elastic material 14 that is suspended in a contact manner along the chain 13 on the reaping device 6 side of the chain 13 over the substantially same width as the width H of the interval part A.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a grass cutting machine for cutting weeds and the like, and is directed to preventing debris such as stones and wood chips from being scattered from inside the cutting device to the outside of the vehicle body due to the rotation of the cutting blade inside the cutting device. [Background technology]

[0002] The present invention describes a grass cutter that is provided with plate-shaped anti-scattering means at the front and rear ends of the mowing device (grass cutting device) to prevent scattering of debris such as stones and wood chips that are thrown off by the cutting blade rotating inside the mowing device. It has also been known in the past to configure anti-scattering devices using rubber plates or chains. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-99296 Summary of the Invention [Problem to be solved by the invention]

[0004] The mowing device in Patent Document 1 allows the mowing height to be changed by raising and lowering the mowing device, and because the scattering prevention devices attached to the front and rear ends of the mowing device rise and fall integrally with the mowing device, there is a problem in that when the mowing device is raised, gaps are formed between the scattering prevention devices and the ground, which allows stones and other debris to be scattered outside the mowing device.Furthermore, scattering prevention devices made of multiple separated sheet metal that swing back and forth around the upper front or rear end of the mowing device, or scattering prevention devices configured to be hung from chains and arranged in a row, also have the problem that when adjacent scattering prevention devices swing differently from each other depending on the slope, unevenness, driving conditions, etc. of the ground, gaps are formed that allow stones and other debris to pass through that are scattered from inside the mowing device. Furthermore, if a scattering prevention device consisting of a suspended chain is installed on a brush cutter equipped with a mowing device between the left and right crawler travelling devices, when the mowing device travels in the contour direction on a slope, the chain tilts vertically (due to gravity) relative to the mowing device, which is parallel to the ground, creating a triangular gap at the end of the cutting blade cover on the slope's crest side, and the chain on the slope's valley side gets caught in the crawler travelling device. The present invention aims to provide a brush cutter that can reliably prevent debris from flying outside the mowing device from flying outside the vehicle body, regardless of the ground surface or travelling conditions. [Means for solving the problem]

[0005] A mowing device 6 that can be raised and lowered is provided in an inner space A between crawler traveling devices 5L, 5R, each of which has a ground contact roller 2 journaled on a track frame T on the left and right sides of a vehicle body 1, a tension roller 3, and a drive sprocket 4 around which a crawler C is wound. The mowing device 6 is provided with a cutting blade 8 that rotates around a cutting shaft 7 in a substantially vertical direction, a cutting blade cover 9 that covers the cutting blade 8, and first scattering prevention devices 11f, 11r at the front and rear ends of the cutting blade cover 9 to prevent scattering of debris outward from the cutting blade cover 9 due to rotation of the cutting blade 8. In the mowing machine, second anti-scattering devices 12f, 12r are provided at positions in front of and behind the mowing device 6, spaced from the mowing device 6, and are hung from the vehicle body 1 side, and the second anti-scattering devices 12f, 12r are hung in a row by metal chains 13 at a length that approaches or makes contact with the ground J over a width approximately equal to the width H of the gap A between the left and right crawler running devices 5L, 5R, and a single plate-shaped elastic material 14 that abuts and hangs down along the chain 13 on the mowing device 6 side of the chain 13 and has a width approximately equal to the width H of the gap A.

[0006] The mowing machine is configured such that the lower parts of the chains 13 at both the left and right ends of the second scattering prevention devices 12f, 12r are connected to the elastic material 14.

[0007] In addition, when viewed from the side, the mowing machine is configured so that a side anti-scattering plate 15 is provided in the overlap area V below the inner peripheral area D of the crawler C and the front-to-rear extension line L of the lower end of the side plate 9a of the cutting blade cover 9 when the cutting device 6 is raised to the upper limit height, and covers at least the overlap area V and follows the outer surface of the track frame T. [Effects of the Invention]

[0008] The invention described in claim 1 is a grass cutting machine having a freely liftable mowing device 6 provided in an inner space A of crawler traveling devices 5L, 5R, each having a ground contact roller 2 journaled on a track frame T on the left and right sides of a vehicle body 1, a tension roller 3, and a drive sprocket 4 around which a crawler C is wound, the mowing device 6 having a cutting blade 8 that rotates around a substantially vertical cutting shaft 7, a cutting blade cover 9 that covers the cutting blade 8, and first scattering prevention devices 11f, 11r at the front and rear ends of the cutting blade cover 9 to prevent debris from scattering outward from the cutting blade cover 9 due to the rotation of the cutting blade 8. In this grass cutting machine, when some of the debris is scattered outward from the mowing device 6, the track frames T of the crawler traveling devices 5L, 5R arranged on the left and right sides of the mowing device 6, the ground contact roller 2 journaled on the track frame T, the tension roller 3, and the crawler C act as barriers to prevent the debris from scattering outward from the left and right sides of the crawler traveling devices 5L, 5R. In addition, most of the scattered material scattered in the front and rear directions of the cutting blade cover 9 is blocked by the first scattering prevention devices 11f, 11r. In a grass cutting machine having this configuration, second scattering prevention devices 12f, 12r are provided at positions in front of and behind the cutting device 6, spaced apart from the cutting device 6, and are hung from the vehicle body 1 side. The second scattering prevention devices 12f, 12r are in contact with the ground J over a width substantially equal to the width H of the space A between the left and right crawler traveling devices 5L, 5R. The chains 13 are made of metal and are hung in a row so that they are close to or touch each other, and the chains 13 are made of a single plate-like elastic material 14 that abuts against the chains 13 on the side of the mowing device 6, hanging down and spanning approximately the same width as the width H of the gap A. Therefore, the second scattering prevention devices 12f, 12r provided on the vehicle body 1 side can reliably block any debris flying in the front-to-rear direction that could not be blocked by the rising and falling first scattering prevention devices 11f, 11r, thereby significantly reducing the scattering of debris outside the vehicle body 1. Furthermore, even if gaps that allow stones and gravel to pass through are formed between adjacent chains 13 due to the slope or unevenness of the ground J or the traveling state of the mowing machine, the gaps are blocked by the inner plate-like elastic material 14, further reducing the probability of debris being scattered outside the vehicle body 1. Furthermore, even if a relatively large flying object strikes the lightweight elastic material 14, the outer metal chain 13 holds down the elastic material 14, so that the flying object does not easily fly out to the outside of the vehicle body 1.

[0009] In the invention described in claim 2, the lower part of the chain 13 at both left and right ends of the second scattering prevention device 12f, 12r is connected to the elastic material 14, so that when traveling on a slope in the contour direction, the chain 13 on the slope valley side does not get caught in the crawler traveling device 5L, 5R such as the contact roller 2 or tension roller 3. Furthermore, when traveling on a slope in the contour direction, the chain 13 is tilted vertically (in the direction of gravity), and the triangular region at the end of the second scattering prevention device 12f, 12r on the slope mountain side is made up only of the elastic material 14. However, by connecting the lower part of the chain 13 at both left and right ends of the second scattering prevention device 12f, 12r to the elastic material 14, the triangular region at the end of the second scattering prevention device 12f, 12r on the slope mountain side is not made up only of the elastic material 10, which further reduces the possibility of scattered objects flying out of the vehicle body 1 from this portion.

[0010] The invention described in claim 3 has, in a side view, a side anti-scattering plate 15 that covers at least the overlapping area V and follows the outer surface of the track frame T in the inner peripheral area D of the crawler C and in the overlapping area V below the front-to-back extension line L of the lower end of the side plate 9a of the cutting blade cover 9 when the cutting device 6 is raised to its upper limit height.Therefore, any debris that scatters sideways from the cutting device 6 is blocked by the trek frame T, the contact roller 2, or the tension roller 3, and any debris that still scatters to the outside of the track frame T can be reliably blocked by the anti-scattering plate 15 that follows the track frame T in the overlapping area V. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is an overall side view and a partial front view showing a scattering prevention device of the present invention. [Figure 2] FIG. 2 is a partial side view and a partial rear view of the present invention. [Figure 3] FIG. 2 is a plan view showing the reaping device and the scattering prevention device of the present invention. [Figure 4] 1 is a partial rear view, a side view, and a partial front view showing the state in which the chain and elastic body of the present invention are connected. FIG. [Figure 5] FIG. 3 is a partial cross-sectional side view showing the anti-scattering structure of the crawler traveling device of the present invention. [Figure 6] FIG. [Figure 7]FIG. 4 is a partially sectional rear view showing the inclined state of the present invention. [Figure 8] 4 is a partial side view and a partial front view showing a scattering prevention device in front of a crawler traveling device. FIG. [Figure 9] 4 is a partial side view and a partial front view showing a scattering prevention device in front of a crawler traveling device. FIG. [Figure 10] FIG. [Figure 11] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] The present invention will be described using a wireless remote-controlled grass mower as an example. This grass mower can be remotely controlled using a radio control unit (not shown) held by the operator, allowing for travel, engine E start / stop, grass cutting height adjustment, and other operations. Crawler travelling devices 5L, 5R are mounted on the left and right sides of a frame 20 forming a vehicle body 1. A pair of left and right link mechanisms 21 are mounted in a space A between the crawler travelling devices 5L, 5R, allowing the mower 6 to be raised and lowered via a parallel link. The mower 6 can be raised and lowered via a lifting link 23 by extending and retracting a lifting cylinder 22. A knife stay 24 is attached to the lower end of the central vertical mowing shaft 7 inside the cutting blade cover 9 of the mower 6, and two upper and lower knives 19 are pivotally supported at the tip of the knife stay 24. The crawler traveling devices 5L, 5R have multiple ground contact rollers 2 journaled on track frames T provided on the left and right sides of the frame 20, with crawlers C wound around tension rollers 3 at the front of the track frame T, large diameter ground contact rollers 2d at the rear, and a drive sprocket 4 above the large diameter ground contact rollers 2d, and the tension of the crawlers C can be adjusted by adjusting the tension roller 3 at the front end forward and backward. On the top surface of the cutting blade cover 9 of the cutting device 6, there is provided a cutting blade pulley 25 attached to the upper end of the cutting shaft 7 through which the cutting blade cover 9 is inserted, and two upper and lower counter pulleys 26 behind it, and a cutting blade V-belt 27 is wound between the cutting blade pulley 25 and the lower counter pulley 26 to enable belt transmission. An engine E is mounted in front of an engine base 28 above the harvesting device 6, with a generator 29, fuel tank 30, running battery, etc. arranged behind it, and two engine pulleys 32, one upper and one lower, are attached to an output shaft 31 that protrudes from the engine base 28 toward the bottom of the engine E, and a generator pulley 33 is attached to a shaft that protrudes from the engine base 28 toward the bottom of the generator 29, with a V-belt 34 connecting the upper engine pulley 32 and the generator pulley 33 to enable belt transmission. A counter V-belt 35 is wound between the lower engine pulley 32 and the upper counter pulley 26 to enable belt transmission.

[0013] At the front and rear ends of the cutting device 6, first scattering prevention devices 11f, 11r are provided to prevent debris scattered by the rotation of the cutting blade 8 from scattering outward from the cutting blade cover 9. These first scattering prevention devices 11f, 11r are composed of multiple sheet metal cover plates 37 that hang down across the entire width of the cutting blade cover 9 and are pivotally supported in a curtain-like manner on shafts 36, and a single outer cover 38 made of elastic material on the outside of the cover plates 37. Even if the sheet metal cover plates 37 are subjected to the impact force of debris scattered from the cutting blade 8, they are kept enclosed by the outer elastic outer cover 38, which mitigates the swinging and distortion impact force of the cover plates 37 and reduces excessive opening or gaps between the cover plates 37, preventing debris from scattering outward from the first scattering prevention devices 11f, 11r. In addition, most of the hard flying debris such as stones and gravel first hits the metal cover plate 37, so the hard flying debris is less likely to hit the outer cover 38 made of soft elastic material such as rubber, and the durability of the outer cover 38 can be increased.

[0014] The engine base 28 is configured to be able to swing left and right around a swing fulcrum 40 by extending and retracting a tilting cylinder 39, and when the vehicle body 1 tilts left and right, the engine base 28 swings toward the uphill side of the slope, so that even when mowing on a steep slope of 30 degrees or more, the engine E is tilted toward the uphill side so that the engine E's limit tilt angle (generally 25 degrees for general-purpose engines) is not exceeded, preventing the engine E from seizing due to poor oil circulation. At the rear of the engine base 28 are provided travel motors M and gearboxes G that drive the left and right crawler travel devices 5L, 5R, as well as a controller 41 that controls the travel motors M, charging, tilting of the engine E, etc., and the rear part of the engine E, excluding the engine E itself, is covered with a cover 42. The travel motor M and gearbox G are provided on each of the left and right crawler travel devices 5L, 5R, and by rotating the left and right crawlers C, C in opposite directions, it is possible to perform a super-spin turn (turn on the spot), and a spin turn by stopping one crawler C and rotating the other crawler C.

[0015] The front second scattering prevention device 12f is provided in parallel to the first scattering prevention device 11f at a spaced position in front of the first scattering prevention device 11f, and the rear second scattering prevention device 12r is provided in parallel to the first scattering prevention device 11r at a spaced position behind the first scattering prevention device 11r. The front second scattering prevention device 12f is formed to have a width H1 wider than the width H of the inner gap A between the left and right crawler traveling devices 5L, 5R, and the chain 13a located on the front side of the left and right crawlers C is one link R shorter than the chain 13, and no elastic material 14 made of rubber, resin, or the like is formed on the crawler C side (rear side) of the chain 13a. As shown in Figure 1, this is a configuration in which the second anti-scattering device 12f including the chain 13a swings back and forth in the gap F, preventing the lower end of the chain 13a from getting between the crawler C and the ground J, making it possible to maintain smooth running and the effect of preventing scattering of scattered objects.However, if the gap between the front end of the crawler C and the first anti-scattering device 12f in a side view is wide and the lower end of the chain 13a does not get between the crawler C and the ground J, the elastic material 14 may be formed over the wide width H1 between the chain 13 and the chain 13a.

[0016] The front second scattering prevention device 12f is provided over a width H1 that is wider than the width H, and the rear second scattering prevention device 12r is provided at the rear end positions of the left and right crawler traveling devices 5L, 5R over a width that is approximately the same as the width H. The second scattering prevention devices 12f, 12r have the upper end of a chain 13 suspended from a hanging plate 44, and the upper end of an elastic member 14 hanging down from the inside of the chain 13 (toward the reaping device 6) is attached. The hanging plate 44 is suspended from a hook 45 fixed to the frame 20 via a U-shaped bracket 46, and the second scattering prevention devices 12f, 12r are supported so that they can swing back and forth as a unit.

[0017] In a grass cutting machine having a mowing device 6 that can be raised and lowered in the inner space A between the crawler traveling devices 5L, 5R, and the mowing device 6 having a mowing blade 8 that rotates around a mowing shaft 7 that is approximately vertical, and a mowing blade cover 9 that covers the mowing blade 8, if some of the debris is scattered to the outside of the mowing device 6, the track frame T of the crawler traveling devices 5L, 5R arranged on the left and right sides of the mowing device 6, the ground contact roller 2 supported on the track frame T, the tension roller 3, and the crawler C act as barriers to prevent the debris from scattering to the left and right sides of the crawler traveling devices 5L, 5R.Furthermore, the front and rear ends of the blade cover 9 are equipped with first scattering prevention devices 11f, 11r that prevent debris from scattering in the forward and backward directions of the blade cover 9 due to the rotation of the blade 8, so that the scattering of debris to the outside of the blade cover 9 is naturally minimized.

[0018] Here, second scattering prevention devices 12f, 12r are provided at positions in front and rear of the mowing device 6, spaced from the mowing device 6, and are hung from the vehicle body 1 side.The second scattering prevention devices 12f, 12r are arranged in a row and hung at a length that approaches or touches the ground J over a width approximately equal to the width H of the gap A between the left and right crawler running devices 5L, 5R, and are composed of a single plate-shaped elastic material 14 that abuts against the chain 13 on the mowing device 6 side of the chain 13 and hangs down over a width approximately equal to the width H of the gap A.Therefore, the second scattering prevention devices 12f, 12r provided on the vehicle body 1 side can reliably block scattering in the forward and backward directions that could not be blocked by the rising and falling first scattering prevention devices 11f, 11r, and significantly reduce scattering of scattering outside the vehicle body 1. Furthermore, even if gaps that allow stones and gravel to pass through are formed between adjacent chains 13 due to the slope or unevenness of the ground J or the traveling state of the mowing machine, the gaps are blocked by the inner single plate-shaped elastic material 14, further reducing the probability of debris being scattered outside the vehicle body 1. Furthermore, even if a relatively large debris hits the lightweight elastic material 14, the outer metal chain 13 holds it down, so the debris does not easily fly out outside the vehicle body 1.

[0019] The chain 13 of the rear second anti-scattering device 12r is located in a position close to the rear end of the crawler C, and the chain 13, which is long enough to approach or even come into contact with the ground surface J, becomes tilted in the vertical (gravitational) direction when traveling along the contours on a slope, and the chain 13 on the slope valley side may become entangled in the contact roller 2 or may become pinched between the crawler C and the ground surface J. Furthermore, as shown in Figure 7, when traveling along the contours on a slope, the chains 13 of the second anti-scattering devices 12f, 12r become tilted in the vertical (gravitational) direction, leaving only the elastic material 14 in the triangular region S at the end on the slope mountain side, which creates the problem of debris easily flying out from this triangular region S.

[0020] Here, the lower parts of the two chains 13 at both the left and right ends of the second scattering prevention device 12r are connected to the elastic material 14 by connecting fittings 47, so when traveling along a slope in the contour direction, the chain 13 on the slope valley side will not become entangled in the crawler traveling devices 5L, 5R, such as the contact roller 2 or tension roller 3. Furthermore, when traveling along a slope in the contour direction, the chain 13 becomes tilted vertically (in the direction of gravity), and the triangular region S at the end of the second scattering prevention device 12r on the slope mountain side is made up only of the elastic material 14. However, by connecting the lower parts of the chains 13 at both the left and right ends of the second scattering prevention device 12r to the elastic material 14, the triangular region S at the end of the second scattering prevention device 12r on the slope mountain side is not made up only of the elastic material 10, further reducing the possibility of scattered objects flying out of the vehicle body 1 from this area. Furthermore, the triangular region S1 between the connected and unconnected portions of the lower part of the chain 13 and the elastic material 14 connects the lower part of the chain 13 at the end on the slope side to the elastic material 14. Therefore, even if the elastic material 14 is subjected to the impact of flying debris, the chain 13 holds down the left and right sides of the triangular region S1, preventing the debris from easily flying outward. The number of chains 13 connected to the elastic material 14 at both left and right ends of the second scattering prevention device 12r can be increased or decreased as appropriate depending on the length of the chains 13 and the inclination angle of the ground during mowing work, and is not limited to connecting two chains 13 to the elastic material 14 as in this embodiment. Furthermore, when the second scattering prevention device 12f is disposed at the front end of the crawler C in a side view, it can be formed over approximately the same width as the width H of the gap A, similar to the second scattering prevention device 12r.

[0021] If debris is scattered to the side of the mowing device 6 in the inner peripheral region D of the crawler C of the crawler traveling devices 5L, 5R, structures such as the track frame T, the contact roller 2, the large-diameter contact roller 2d, and the tension roller 3 act as barriers, preventing the debris from scattering outward. Furthermore, the debris may be reflected within these structures and roll off the top surface of the track frame T. To prevent this scattering and rolling off, a side scattering prevention means 48 is provided that covers almost the entire inner peripheral region D of the crawler C. This configuration that covers almost the entire inner peripheral region D of the crawler C provides the user of the brush cutter with absolute peace of mind that debris will not scatter to the side of the vehicle body 1. However, if debris is allowed to roll off the top surface of the track frame T, the side scattering prevention means 48 that covers almost the entire inner peripheral region D of the crawler C is not necessary; the scattering prevention range can be selected appropriately depending on the conditions. 5 shows the state in which the reaping device 6 has been raised to its uppermost position, and in a side view, a side scattering prevention plate 15 is provided that covers at least the overlap area V, which is below the inner peripheral area D of the crawler C and the front-to-rear extension line L of the lower end of the side plate 9a of the cutting blade cover 9 when the reaping device 6 is raised to its uppermost height, and follows the outer surface of the track frame T (see FIG. 6). This ensures that scattering prevention plate 15 can reliably block debris that has slipped through structures such as the track frame T, ground contact roller 2, large diameter ground contact roller 2d, and tension roller 3, preventing debris from scattering to the side. Note that the scattering prevention plate 15 may come into contact with the inner peripheral area of ​​the crawler C due to deformation or tilt of the crawler C, so it is preferable that the scattering prevention plate 15 be made of an elastic material such as rubber.

[0022] Front second scattering prevention device 12f is located further forward than the front ends of left and right crawler traveling devices 5L, 5R in a side view, and as shown in Figures 1 and 6, a gap F is formed between the front ends of crawler traveling devices 5L, 5R and second scattering prevention device 12f, through which scattered objects may fly out. However, a separate front side scattering prevention device 43 is provided to prevent scattered objects from flying out from this gap F. Figure 8 shows the state in which reaping device 6 has been lowered to the lowest position, and Figure 9 shows the state in which reaping device 6 has been raised from the lowest position to the highest position. The front side scattering prevention device 43 prevents debris from scattering outward through the gap F between the front ends of the crawler traveling devices 5L, 5R and the second scattering prevention device 12f in a side view. It consists of an outer elastic plate 50 and an inner chain 51. A mounting bracket 52 is attached to the frame 1, and the upper end of the elastic plate 50 is attached above the mounting bracket 52. The lower part of the elastic plate 50 is attached to the side plate 9a of the blade cover 9 via a connecting plate 53. Three chains 51 are aligned in the front-to-rear direction and are hung from the lower end of a hanging plate 54 extending downward from the mounting bracket 52. The elastic plate 50 on the outer side of the chain 51 (on the crawler C side) rises and falls Y as the reaping device 6 rises and falls. Therefore, when traveling on an inclined surface, the chain 51 and elastic plate 50 do not come into contact with or become entangled in the tension roller 3 or the crawler C, causing resistance to traveling or being damaged. The front side scattering prevention device 43 is formed with a width sufficient to close the gap F when the ground is flat, but is not necessary if the gap F between the crawler traveling devices 5L, 5R is not formed. [Explanation of symbols]

[0023] 1. Body 2 Ground Roller 3 Tension roller 4 drive sprocket 5L crawler travel device 5R crawler running device 6 Reaping device 7 Reaping axis 8 mower blade 9 Blade cover 9a side plate 11f 1st anti-scattering device 11r 1st anti-scattering device 12f 2nd anti-scattering device 12r 2nd anti-scattering device 13 chain 14 Elastic material 15 Shatterproof plate A Spacing C Crawler D Inner area H width L Lower end front and back extension line T-track frame V Polymerization zone

Claims

1. A grass cutting machine comprising: a vehicle body (1), a ground contact roller (2) journaled on left and right track frames (T), a tension roller (3), and a crawler travel device (5L), (5R) having a crawler (C) wound around a drive sprocket (4), and an inner space (A) between the ground contact roller (2), a tension roller (3), and a drive sprocket (4). The ground contact roller (2), a tension roller (3), and a drive sprocket (4). The ground contact roller (2), a tension roller (3), and a drive sprocket (4). The ground contact roller (2), a tension roller (3), and a drive sprocket (4). The ground contact roller (6) is provided with a cutting blade (8) that rotates around a substantially vertical cutting shaft (7), a cutting blade cover (9) that covers the cutting blade (8), and first scattering prevention devices (11f), (11r) at the front and rear ends of the cutting blade cover (9) that prevent scattering of debris outward from the cutting blade cover (9) due to rotation of the cutting blade (8). a second anti-scattering device (12f), (12r) suspended from the vehicle body (1) at positions in front of and behind the mowing device (6) at a distance from the mowing device (6); a metal chain (13) suspending the second anti-scattering devices (12f), (12r) in a row at a length that approaches or contacts the ground (J) over a width approximately equal to the width (H) of the gap (A) between the left and right crawler traveling devices (5L), (5R); and a single plate-shaped elastic material (14) abutting and hanging along the chain (13) on the mowing device (6) side and over a width approximately equal to the width (H) of the gap (A).

2. 2. A brush cutter according to claim 1, wherein the lower part of the chain (13) at both left and right ends of the second scattering prevention device (12f, 12r) is connected to an elastic member (14).

3. 3. A brush cutting machine according to claim 1 or 2, wherein, in a side view, a side anti-scattering plate (15) is provided in an overlapping area (V) below the inner peripheral area (D) of the crawler (C) and the front-to-rear extension line (L) of the lower end of the side plate (9a) of the cutting blade cover (9) when the cutting device (6) is raised to the upper limit height, the side anti-scattering plate (15) covers at least the overlapping area (V) and follows the outer surface of the track frame (T).

Images