Described herein is a method for dismounting a tire from a wheel assembly. The method may comprise inserting at least a first finger and a second finger between a top bead of a tire and a top bead seat of a wheel, pulling a portion of at least the top bead past a plane defined by the outer edge of the top bead seat, and moving the first finger in a first rotational direction away from the second finger. Also described herein is a finger for dismounting a tire from a wheel. The finger may comprise at least one roller having two opposing ends, each end connected to a corresponding end of a roller nest of the finger. Also described herein is an apparatus for removing a tire from a wheel. The apparatus may comprise a wheel alignment assembly, a tire dismount assembly, a bead lifter, and a rotation assembly.

Described herein is a method for dismounting a tire from a wheel assembly. The method may comprise inserting at least a first finger and a second finger between a top bead of a tire and a top bead seat of a wheel, pulling a portion of at least the top bead past a plane defined by the outer edge of the top bead seat, and moving the first finger in a first rotational direction away from the second finger. Also described herein is a finger for dismounting a tire from a wheel. The finger may comprise at least one roller having two opposing ends, each end connected to a corresponding end of a roller nest of the finger. Also described herein is an apparatus for removing a tire from a wheel. The apparatus may comprise a wheel alignment assembly, a tire dismount assembly, a bead lifter, and a rotation assembly.

The present disclosure provides an assistant arm for an automobile tire changer and a method for manufacturing principal parts of the assistant arm. The assistant arm is of a one-for-two structure. A longitudinal actuator is connected to a sliding body, with an upper tire pressing mechanism hinged to the upper end and a lower tire pressing mechanism hinged to the lower end. A guide rail plate is arranged on a vertical column to form a combined guide rail. The guide rail plate is made of 45# bar-like steel plate, and has a straightness and a flatness of less than or equal to 0.05 mm/m. The vertical column includes a square steel tube as an anti-buckling beam, and several protrusions are welded onto upper and lower portions and a lateral surface of the vertical column to serve as a mounting reference surface with a flatness of less than or equal to 0.1 mm/m. An upper stopper, a lower stopper, a first lateral rib and a second lateral rib are welded to the sliding body within which a slider is arranged. The sliding body is connected to a piston rod of the longitudinal actuator by means of a thrust joint bearing. A lower end of the longitudinal actuator is hinged to a bottom of the vertical column through a lug shaft. Upper and lower laterally-swinging guide sleeve are each provided with a claw wrench. A console consists of a handle, a front plate welding assembly, a rear cover plate welding assembly, a tapered gasket and a sunk screw. The combined guide rail, the sliding body and the console, after being subjected to rough and fine machining, are combined together so as to form the assistant arm.

The present disclosure provides an assistant arm for an automobile tire changer and a method for manufacturing principal parts of the assistant arm. The assistant arm is of a one-for-two structure. A longitudinal actuator is connected to a sliding body, with an upper tire pressing mechanism hinged to the upper end and a lower tire pressing mechanism hinged to the lower end. A guide rail plate is arranged on a vertical column to form a combined guide rail. The guide rail plate is made of 45# bar-like steel plate, and has a straightness and a flatness of less than or equal to 0.05 mm/m. The vertical column includes a square steel tube as an anti-buckling beam, and several protrusions are welded onto upper and lower portions and a lateral surface of the vertical column to serve as a mounting reference surface with a flatness of less than or equal to 0.1 mm/m. An upper stopper, a lower stopper, a first lateral rib and a second lateral rib are welded to the sliding body within which a slider is arranged. The sliding body is connected to a piston rod of the longitudinal actuator by means of a thrust joint bearing. A lower end of the longitudinal actuator is hinged to a bottom of the vertical column through a lug shaft. Upper and lower laterally-swinging guide sleeve are each provided with a claw wrench. A console consists of a handle, a front plate welding assembly, a rear cover plate welding assembly, a tapered gasket and a sunk screw. The combined guide rail, the sliding body and the console, after being subjected to rough and fine machining, are combined together so as to form the assistant arm.

The machine (10) for fitting/removing a tyre includes: a bedplate (12) for resting on the ground; a spindle (16), mounted on the bedplate and configured to tighten a rim of a wheel thereon; a demounting tool, mounted on the bedplate and able to remove a tyre from the rim when the wheel is loaded on the spindle; a bead breaking arm (30), movably connected to the bedplate and having a bead breaking tool (32) able to bead break the tyre from the rim; a lifting member (52, 54, 56), movably connected to the bedplate and able to lift the wheel to load it on the spindle after bead breaking; and an operating device (40) which is selectively connectable either to the bead breaking arm or to the lifting member and able to operate the bead breaking arm or the lifting member according to choice.

The machine (10) for fitting/removing a tyre includes: a bedplate (12) for resting on the ground; a spindle (16), mounted on the bedplate and configured to tighten a rim of a wheel thereon; a demounting tool, mounted on the bedplate and able to remove a tyre from the rim when the wheel is loaded on the spindle; a bead breaking arm (30), movably connected to the bedplate and having a bead breaking tool (32) able to bead break the tyre from the rim; a lifting member (52, 54, 56), movably connected to the bedplate and able to lift the wheel to load it on the spindle after bead breaking; and an operating device (40) which is selectively connectable either to the bead breaking arm or to the lifting member and able to operate the bead breaking arm or the lifting member according to choice.

Tyre-removal apparatus comprising a base having a support for receiving and rotating the wheel. The tyre-removal apparatus further comprising a frame which is joined to the base and which has an upright with a longitudinal axis substantially parallel to an axis of rotation of the wheel. A support arm is associated with the upright and is movable in a direction substantially parallel to the axis of rotation of the wheel. A tool for operating on the wheel is mounted pivoting on the support arm. A sensor, associated with the tool, is able to detect at least one parameter representing contact between the tool and the wheel, said sensor being operationally connected to a control unit able to control an actuator, associated with the support arm, so as to pivot the tool between a first withdrawn position with respect to the axis of rotation of the wheel and a second advanced position with respect to the axis of rotation of the wheel, depending on the at least one parameter representing the contact between the tool and the wheel.

Tyre-removal apparatus comprising a base having a support for receiving and rotating the wheel. A frame having an upright with a longitudinal axis substantially parallel to an axis of rotation of the wheel is joined to the base of the tyre-removal apparatus. A support arm is associated with the upright and is movable in a direction substantially parallel to the axis of rotation of the wheel. A tool for operating on the wheel is mounted on the support arm. An actuator is able to move the support arm along the direction substantially parallel to the axis of rotation of the wheel. At least one sensor, able to detect at least one parameter representing contact between the tool and the wheel, is associated with said actuator. Said at least one sensor is operationally connected to a control unit able to control the actuator and/or at least one further actuator, associated with the support arm, so as to move the tool along a trajectory determined by the control unit, depending on the at least one parameter representing the contact between the tool and the wheel.

An apparatus for mounting and demounting a tyre relative to a corresponding wheel rim, wherein the apparatus includes: a wheel-holder unit, configured to receive and lock the wheel at an operating position and to set it in rotation about an axis of rotation; a plurality of tools, configured to interact with the tyre to mount and/or demount the tyre; a hydraulic circuit comprising a pump; a plurality of hydraulic actuators, connected to the hydraulic circuit; the hydraulic circuit is configured to drive the actuators of the plurality of actuators synchronously

A tyre changing machine includes a wheel support assembly for locking and setting in rotation a rim of a wheel from which to demount or on which to mount a tyre, and a bead breaking tool disposed at an end of a bead breaking arm and able to carry out the bead breaking operation. The bead breaking arm is movable between a disengaged position and a working position. A motor device has an output drive shaft for moving the bead breaking arm between the disengaged and working positions. Means for transmitting the drive from the motor device to the bead breaking arm include threaded means having an external screw-thread and hollow counter-threaded means operatively coupled with the threaded means. Connecting means operatively associate the means for transmitting the drive to the bead breaking arm.