Wheelwright machines – Rubber tire mounting and/or demounting apparatus – For collapsing or shifting tire axially
Patent
1996-10-25
1998-06-02
Meislin, D. S.
Wheelwright machines
Rubber tire mounting and/or demounting apparatus
For collapsing or shifting tire axially
157 12, 157 124, B60C 25132
Patent
active
057587035
ABSTRACT:
A tire mounting and removing apparatus equipped with a first aid unit for making the tire to fit on the wheel, a second aid unit for preventing the tire from slipping off the wheel, and a centering unit. The tire fitting aid unit comprises a movable push plate having rolls rotatably fixed thereto and a piston-and-cylinder drive for driving the push plate thereby to push one side of the tire while rotating, and the tire slip-off preventing aid unit comprises a movable push plate having an arm swingably fixed thereto, and a piston-and-cylinder drive for driving the push plate to permit the swingable arm to push the tire with its end. These aid units facilitate the mounting and removing of a soft tire such as a tubeless tire from the wheel. The centering unit for determining the rising distance of the tire to the wheel at a predetermined level comprises a slidable upright post having a slider mounted thereto and a pneumatic piston-and-cylinder drive for moving the upright post back and forth. The slider has an arm fixed thereto for touching the inner circumference of the wheel or tire bead with its contact end, thereby measuring the side height of the tire. The rising distance of the tire can be determined from the so measured side height of the tire, and from the known values of the radius of the tire and the height of the wheel chuck. The tire lift can be controlled in terms of the so determined rising distance of the tire, thereby permitting the tire to rise automatically up to the level of the wheel.
REFERENCES:
patent: 2470534 (1949-05-01), Thomas
patent: 4420026 (1983-12-01), Goiseau
patent: 4673016 (1987-06-01), Damman et al.
patent: 5215138 (1993-06-01), Toriselli et al.
patent: 5222538 (1993-06-01), Tomita et al.
Meislin D. S.
Onodani Machine Co., Ltd.
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