JPH0112597Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a drive wheel structure for a pruning machine.

Conventionally, a frame is provided with an inclined drive wheel and a rolling wheel, and the drive wheel and rolling wheel pinch the trunk and climb the trunk in a spiral while cutting the branch with a cutting section connected to the frame. However, since the drive wheels of such pruning machines have an arcuate circumferential surface, the contact surface with the circumferential surface of the trunk is small, and this can cause slipping and prevent the machine from climbing the trunk smoothly, especially when working in the rain. It was difficult to perform sufficient pruning work.

In the present invention, the circumferential side of the inclined drive wheel is formed into a tapered shape so that the circumferential side of the drive wheel can come into close contact with the circumferential surface of the trunk when the machine spirally climbs the trunk. To provide a drive wheel structure for a pruning machine that allows smooth pruning work without causing the drive wheel to slip even when working in the rain.

The embodiment of the present invention will be explained in detail based on the drawings.
A indicates a pruning machine, and this pruning machine A is
A total of four inclined drive wheels 2 are arranged at the top, bottom, left and right positions of the main frame 1, and caster type driven wheels 4 are arranged at the left, right and center positions of the auxiliary frame 3, and the frames 1 and 3 are placed in relative proximity. The trunk B is compressed by the driving wheels 2 and the driven wheels 4, and the driving wheels 1 are driven by the power of the engine 5 disposed on the back of the main body frame 1. The branch b is cut by a cutting part 11 connected to the upper part of the main body frame 1 while spirally climbing.

Here, the driving wheel 2 will be explained as follows.

The drive wheel 2 is installed on the main body frame 1 via an axis 6 in an inclined state, and the coaxial axis 6 is aligned with a vertical imaginary line S.
It is tilted obliquely upward at an angle α. Here, the angle α is 25°. Further, the driving wheels 2 are connected in a direction m perpendicular to the axis of the shaft 6, and the driving wheels 2
The outer circumferential surface 2' is tapered at an angle β with respect to the direction m perpendicular to the axis and is tapered downward in diameter. Here, the angle β is 65°.

Therefore, when the machine A spirally climbs the trunk B, the circumferential side surface 2' of the driving wheel 2 comes into close contact with the peripheral surface of the trunk B, so that the driving wheel 2 is unlikely to slip.

In the figure, 7 is a tire made of a synthetic rubber material, 8 is a rim made of an aluminum material provided around the inner periphery of the tire 7, and 9 is a disk made of an aluminum material fitted into the rim 8.
Reference numeral 10 denotes a stainless wire wrapped around the tire 7 and the rim 8, and a large number of the wires 10 are attached along the cross-sectional shape of the drive wheel 2 at regular intervals.

The embodiment of the present invention is constructed as described above, and the main body frame 1 and the auxiliary frame 3 are urged and connected in the direction of relative proximity to each other, so that the trunk B is pinched between the driving wheels 2 and the driven wheels 4. As a result, the machine A is held on the trunk B, and as the wheels 2 and 4 rotate, the machine A climbs the trunk B in a spiral manner according to the inclination of the drive wheel 2. Since the outer circumferential surface 2' of the wheel 2 is in close contact with the circumferential surface of the trunk B, the contact area is widened, and even when working in the rain, the driving wheel 2 does not slip, and smooth pruning work is performed.
Further, the stainless steel wire 10 wound around the drive wheel 2 further prevents slipping.

In the present invention, the circumferential side of the inclined drive wheel is formed into a tapered shape so that when the machine climbs up the trunk in a spiral manner, the circumferential side of the drive wheel is in close contact with the circumferential surface of the trunk. Even when working in the rain, the drive wheels do not slip, allowing smooth pruning work.

[Brief explanation of the drawing]

FIG. 1 is a front view of an embodiment of the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is an explanatory diagram of the same example in a state in which the drive wheels are attached. A: Pruning machine, B: Trunk, 1: Main frame,
2: Drive wheel, 2': Circumferential side, 3: Auxiliary frame,
4: Driven wheel, 11: Cutting section.

Claims (1)

[Scope of utility model registration request] A drive wheel 2 is provided in a tilted state on the main body frame 1,
A caster type driven wheel 4 is provided on the auxiliary frame 3,
The frames 1 and 3 are urged in the direction of relative proximity to each other and connected, the driving wheels 2 and the driven wheels 4 pinch the trunk B, and the rotation of each wheel spirally climbs the trunk B. In a pruning machine A configured to perform branch cutting with a cutting section 11 connected to a cutting section 1, the circumferential surface 2' of the driving wheel 2, which is inclined, is aligned with respect to the direction m perpendicular to the axis 6 of the driving wheel 2. A drive wheel structure for a pruning machine characterized by being formed in a downwardly reduced diameter shape.