JPS5841821Y2 - Branching machine wheels - Google Patents

Description

[Detailed description of the invention] This invention connects the main engine frame 2 with the chainsaw 1 and the auxiliary machine frame 3 facing it with a spring 4, and connects the main engine frame 2 with the driving wheel 5.
The auxiliary machine frame 3 is equipped with a driven wheel 6, and one wheel 5, 6 is provided.
is pressed against both sides of the tree trunk 70 by the force of the springs 4, and the one-car frame 2.3 is rotated and raised around the tree trunk 7 by the rotation of the driving wheels 5, and the driving wheels 5 are rubber rings. A wire 10 is inserted into a plurality of through holes 9 in the axle direction formed by a rubber ring 8 and drilled along the outer circumference thereof, and the wire 10 is wound spirally around the outer circumferential surface of a rubber ring 8. It's about wheels.

The chain 1 is provided to protrude upward from the upper part of the main engine frame 2, and the drive wheels 5 are provided in a total of four, two each on the upper and lower sides, and are provided on the drive shaft 11 obliquely to the vertical direction and parallel to each other.

The driven wheel 6 is formed by a free wheel (caster).

The rubber ring 8 is fitted onto the outer periphery of a wheel 12 provided on the drive shaft 11, and the outer periphery flange 13 of the wheel 12 is fitted into the inner periphery groove 14 of the rubber ring 8.

The rubber ring 8 and the flange 13vC are bored through the through hole 9, and the rubber ring 8 and the flange 13 are fixed by inserting a wire 10 therethrough as shown in FIG.

A wire tightening groove 15 is formed on the outer peripheral surface of the rubber ring 8,
It is preferable that the wire 10 is partially buried in the gap 15 and its position is fixed.

In the drawing, 16 indicates the boss portion of the wheel 12, 17 indicates the drive device of the drive shaft 11, 24 indicates the prime mover using a gasoline engine, 18 indicates the lowering wheel, 19 indicates the wheel operating lever, and 20
21 is the lifting spring for the operating rod 19, 22 is the guide rod provided on the main engine frame 2, and 23 is the auxiliary engine frame 3.
The guide rod 22 is inserted through a guide ring provided in the guide ring.

Therefore, when the prime mover 24 is started and the first drive wheel 5 is rotated, the short machine frames 2 and 3 swing upward around the outer periphery of the tree trunk 7, and the chain saw 1 cuts the branch 25 during the upward movement.

At this time, the drive wheel 5 is pressed against the outer surface of the tree trunk I by the force of the spring 4, and the wire 10 on the outer surface of the wheel 5 serves to improve the frictional force between the wheel 5 and the tree trunk 7.

In conventional drive wheels, the rubber ring comes into contact with the skin of the tree trunk and tends to slip, causing a reduction in the lifting and turning power of the pruning machine.

Particularly when the skin is wet or there are many irregularities on one skin, the rubber ring slips, making pruning work difficult.

This proposal was made in view of the above defects.

As described above, the present invention provides the drive wheel 5 in the pruning machine.
is formed by a rubber ring 8, a wire 10 is inserted through a plurality of through holes 9 in the axle direction drilled along the outer periphery of the rubber ring 8, and the wire 10 is wound helically around the outer periphery of the rubber ring 8. Therefore, when the rubber ring 8 is pressed against the tree trunk 7, the rubber ring 8 presses the wire 10 against the tree trunk 7, and the outer peripheral surfaces of the wire 10 and the rubber ring 8 are both pressed against the outer skin of the tree trunk 7.

When the coax 5 rotates, the wire 10 is pressed against the outer peripheral surface of the rubber ring 5 more strongly to improve the frictional resistance of the coax 5 and prevent slipping.
There is no risk of damage to the epidermis because the epidermis is buried by compression, the pruning machine can be smoothly and reliably swiveled up to the tree trunk 7 despite wetness and unevenness of the epidermis, and the power of the prime mover 24 can be effectively used to cut the branches 25. There are potential benefits.

[Brief explanation of the drawing]

FIG. 1 is a front view showing the wheeled pruning machine of the present invention. FIG. 2 is a side view of FIG. 1 seen from the left, FIG. 3 is a plan view of the branching machine, and FIG. 4 is a front view of the wheels. FIG. 5 is a plan view of the same wheel, FIG. 6 is a side view of FIG. 4 viewed from the right side, and FIG. 7 is a longitudinal sectional view taken along the line A-A in FIG. 4. 1... Chain saw, 2... Main engine frame, 3
...Auxiliary machine frame, 4...Spring, 5...
...1 driving wheel, 6...driven wheel, 7...
...Trunk, 8...Rubber ring, 9...Through hole. 10...Wire

Claims (1)

[Claims for Utility Model Registration] A main machine frame 2 having a chain saw 1 and an auxiliary machine frame 3 facing it are connected by a spring 4, a driving wheel 5 is provided on the main machine frame 2, and a driven wheel 6 is provided on the auxiliary machine frame 3. established. In a pruning machine in which both wheels 5 and 6 are pressed against both sides of a tree trunk 7 by the force of springs 4, and the one-car frame 2 and 3 is rotated and raised around the tree trunk 7 by the rotation of the drive wheel 5, the above-mentioned The drive wheel 5 is formed of a rubber ring 8, and a wire 10 is inserted through a plurality of through holes 9 in the axle direction drilled along the outer circumference of the drive wheel 5, and the wire 10 is wound helically around the outer circumferential surface of the rubber ring 8. Wheels for the pruning machine.