JP4391834B2 - Brush cutter with wheels - Google Patents

Description

  The present invention relates to a wheeled brush cutter of a type that is mounted on a medium-sized engine and travels by wheels, unlike a shoulder-type brush cutter and a backpack-type brush cutter mounted with a small engine.

  In this type of conventional brush cutter with wheels, a brush cutter main body composed of a wheel bearing portion and a cutting blade holding portion and a handle portion that are separated from the front and rear of the wheel is driven by the wheel. Yes.

  The problem to be solved is that the wheel is fixedly attached to the main body of the brush cutter in the conventional device, so that the cutting blade of the cutting blade holding portion moves in parallel with the forward and backward movement of the wheel. For this reason, the cutting blade is swung (tilted to the left and right) according to the unevenness of the work surface (running surface), so it cannot be cut in parallel along the work surface, and the angle of the cutting blade is changed with respect to the change in the gradient of the work surface. Since it cannot be done, it cannot be cut in parallel along the work surface with a gradient, and furthermore, it cannot be cut so high that the cutting blade cannot be rubbed against the work surface.

The invention of claim 1 includes a plurality of wheels, a bearing chassis that supports the axles of the plurality of wheels, a chassis that is attached to the bearing chassis so as to be rotatable left and right by a vertical axis for swinging left and right, and the chassis. And a driving pipe having a cutting blade holding part attached to the tip, and a handle pipe having a front end attached directly to the driving pipe directly or via the chassis and having a handle part at the rear end. The drive pipe and the handle pipe, and the bearing chassis and the wheel are inclined to the left and right around the horizontal axis in the front-rear direction at the position of the chassis. wherein said bearing chassis and the wheel relative to the cutting blade of the cutter holder tilts the handle portion to the left and right with inclined to the left and right about a horizontal axis in the longitudinal direction harvest There so inclined to the left and right with respect to the bearing chassis and the wheels, further comprising an engine mounted to the proximal end of the drive pipe, attaching said chassis to a position closer to the front than the base end of the drive pipe The bearing chassis suspends and supports the drive pipe through the chassis .

According to the second aspect of the present invention, the cutting blade of the cutting blade holding part is fixed outside the wheel by swinging the drive pipe and the handle pipe back and forth around the vertical axis for swinging the left and right. It is possible to do it.

According to the first aspect of the present invention, when the handle portion is kept straight, the wheel side is inclined to the left and right with respect to the unevenness of the work surface. Therefore, the cutting blade of the cutting blade holding portion can be kept parallel to the work surface. In addition, the angle of the cutting blade can be changed in response to changes in the gradient of the work surface, and the cutting blade can be cut in parallel along the work surface with a gradient. There is an effect that the cutting work can be done at a height that can be rubbed.

  The invention of claim 2 has an effect that the cutting blade of the cutting blade holding part is fixed to the outside of the wheel width and fixed, so that the work can be performed in a straight line state even if it is a wrinkle.

A driving pipe and the handle pipe, and the bearing chassis and the wheels so as to incline in the left-right in the longitudinal direction of the horizontal axis at the position of the chassis, the bearing chassis and the relative cutting blade of the cutting blade holder This was realized by configuring the wheels to tilt left and right around the horizontal axis in the front-rear direction .

  1 is a plan view showing an embodiment of the present invention, FIG. 2 is a side view of FIG. 1, viewed from the side, FIG. 3 is a view showing the vicinity of the bearing portion of FIG. 1, and FIG. 5 is a front view of FIG. 4 as viewed from the left, FIG. 6 is a front view of the operation of claim 1 as viewed from the left of FIG. 2, and FIG. 7 is a front view of the operation of claim 2 in FIG. It is.

  In the figure, 1 is a wheel, 2 is a bearing chassis that supports each axle 3 of the wheel 1, 4 is a chassis half A, 6 that is attached to the bearing chassis 2 so as to be rotatable left and right by a left and right swinging vertical axis 5. Left and right swinging fixing plate attached to the chassis 2, 7 is a left and right swinging oblong hole provided in the left and right swinging fixing plate 6, and 8 is attached to the chassis half A4 and is placed in the left and right swinging oblong hole 7. A left / right swing fixing knob that fits and stops the left / right swing fixing plate 6, a chassis half B attached to the chassis half A 4 so as to swing left and right by a swing shaft 10, and 11 a chassis half B 9. A driving pipe, 12 is a cutting blade holding part attached to the tip of the driving pipe 11, 13 is a cutting blade covered by a safety cover 14, 15 is an engine attached to the base end of the driving pipe 11, and 16 is a chassis half B. The handle pipe attached to, and has a handle portion 17.

  In the state shown in FIGS. 1 to 5, since the two chassis halves A4 and B9 can rotate (swing) with the swing shaft 10 as the center of rotation, the wheel 1 side of the chassis half A4 is fixed (does not vary). When the handle portion 17 is tilted left and right, the chassis half B9 rotates (swings) about the swing shaft 10 and the cutting blade 13 of the cutting blade holding portion 12 tilts left and right.

  That is, if the handle portion 17 is kept straight (parallel) during traveling, even if one wheel 1 falls into the recess 18 on the traveling surface (work surface) as shown in FIG. Since the swing shaft 10 rotates (swings) about the rotation center, the cutting blade 13 of the cutting blade holding part 12 on the chassis half B9 side is kept parallel to the work surface without being tilted and can be cut in parallel along the work surface.

  Further, since the cutting blade 13 of the cutting blade holding portion 12 can be freely tilted to the left and right by operating the handle portion 17 as described above, the inclination angle of the cutting blade 13 is adjusted to match the gradient change of the work surface. It is possible to mow in parallel along the work surface and further change the height so that the cutting blade 13 is rubbed against the work surface.

  Next, in the state shown in FIGS. 1 to 5, the chassis half A4 side (chassis) with respect to the bearing chassis 2 (also with respect to the left and right swing fixing plate 6) with the left and right swinging vertical axis 5 as the rotation center. The half body B9 side can also be rotated left and right. For example, when the left and right swing fixing knob 8 is tightened at the position where the handle portion 17 is rotated to the left as shown in FIG. Utilizing this, the left and right swinging fixing plate 6 is fixed to the chassis half A4, and the cutting blade 13 protrudes outside the width of the wheel 1 as shown. If the vehicle goes straight in this state, it can be mowed by the cutting blade 13 that protrudes outward from the width of the wheel 1.

  In the present embodiment, different embodiments of the bearing portion will be described with reference to FIGS. 8 is a view corresponding to FIG. 3, FIG. 9 is a view corresponding to FIG. 4, and FIG. 10 is a view corresponding to FIG. 5. In FIG. The description is omitted.

  In the figure, reference numeral 19 denotes a chassis through which the drive pipe 11 is rotatably inserted, and the chassis can be rotated left and right with respect to the bearing chassis 2 by the vertical swing shaft 5. The handle pipe 16 is attached to the drive pipe 11.

  In the state shown in FIGS. 8 to 10, when the handle portion 17 is tilted to the left and right, the drive pipe 11 rotates in the chassis 19, so that the cutting blade 13 of the cutting blade holding portion 12 is tilted to the left and right, and the left and right swings. The chassis 19 side (also the drive pipe 11 side) rotates to the left and right with respect to the bearing chassis 2 (and also to the left and right swing fixing plate 6) about the vertical axis 5 for rotation.

  The present invention can be widely used throughout a wheeled brush cutter.

It is a top view which shows Example 1 of this invention. It is the side view which looked at FIG. 1 from the side. It is a figure which shows the bearing part vicinity of FIG. It is a figure which shows the bearing part vicinity of FIG. It is the front view which looked at FIG. 4 from the left. FIG. 3 is a front view for explaining the operation of claim 1 when FIG. 2 is viewed from the left. It is a front view explaining the operation | movement of Claim 2 in FIG. FIG. 4 shows a second embodiment of the present invention and corresponds to FIG. 3. It is the side view which looked at FIG. 8 from the side. It is the front view which looked at FIG. 9 from the left.

Explanation of symbols

1: Wheel 2: Bearing chassis 3: Axle 4: Chassis half A
5: Vertical axis for swinging left and right 6: Fixing plate for swinging left and right 7: Long hole for swinging left and right 8: Fixing knob for swinging left and right 9: Chassis half B
10: Swing shaft 11: Drive pipe 12: Cutting blade holding portion 13: Cutting blade 15: Engine 16: Handle pipe 17: Handle portion 18: Recess 19: Chassis

Claims (2)

Multiple wheels,
A bearing chassis that supports each axle of the plurality of wheels;
A chassis attached to the bearing chassis so as to be rotatable left and right by means of a vertical axis for swinging left and right;
A drive pipe attached to the chassis and having a cutting blade holder attached to the tip;
A front end is attached directly to the drive pipe or integrally with the chassis, and a handle pipe having a handle portion at the rear end is provided, and travels by the wheel,
The drive pipe, the handle pipe, the bearing chassis, and the wheel are tilted to the left and right around the horizontal axis in the front-rear direction at the position of the chassis, and the bearing with respect to the cutting blade of the cutting blade holding part When the chassis and the wheel are tilted to the left and right around the horizontal axis in the front-rear direction and the handle portion is tilted to the left and right, the cutting blade is tilted to the left and right with respect to the bearing chassis and the wheel ,
In addition, an engine attached to the proximal end of the drive pipe,
A brush cutter with wheels, wherein the chassis is mounted at a position closer to the front than the base end of the drive pipe, and the bearing chassis suspends and supports the drive pipe via the chassis . The drive pipe and the handle pipe can be swung back and forth around the vertical axis for swinging the left and right, so that the cutting blade of the cutting blade holding part can be fixed outside the wheel. The brush cutter with wheels according to claim 1.

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