Abstract: A tire-changing machine include a base frame; a grip unit fitted on the base frame for revolving around a rotation axis and gripping a vehicle wheel having a rim and a tire to fit/remove; first operating elements for placing the grip unit in rotation around the axis; at least an operating head fitted on the base frame and having at least a work tool; second operating elements for positioning the operating head and the wheel in a work configuration wherein the tool contacts the tire; the grip unit including a first measuring portion subject to a stress condition due to the contact, in correspondence to the first measuring portion, first sensor elements for detecting the stress condition of the first measuring portion and operatively associated with a processing and control unit for determining a danger condition of the tire starting from the stress condition.

Abstract: A machine for balancing vehicle wheels includes: a base frame; a balancing shaft on which a vehicle wheel to be balanced can be fixed; a rotoidal resting unit, fitted on the base frame and supporting the balancing shaft in a revolving way around its own axis; and motor elements for placing in rotation the balancing shaft around its own axis; wherein the balancing shaft includes at least a measuring section which is magnetized and subject to a stress condition due to the unbalance of the wheel revolving on the balancing shaft, in proximity of the measuring section being arranged magnetic field sensor elements which are suitable for detecting by magnetostrictive effect the stress condition of the measuring section and are operatively associated with at least one processing and control unit suitable for determining the unbalance of the wheel starting from the stress condition of the measuring section.

Abstract: Machine for balancing vehicle wheels includes: a base frame supporting elements for gripping and rotating a wheel around a balancing axis; first sensor elements associated with the gripping and rotation elements for detecting the unbalance of the wheel; an electronic processing and control unit associated with the first sensor elements for calculating a balancing weight to apply onto the wheel; and an auxiliary detection appliance associated with the base frame and having: a rolling device for pressing onto the wheel, and in turn including: a support structure for two rollers revolving around axes parallel to each other; and a flexible member closed on itself in a loop, wrapped around the rollers and having a substantially flat active section, and a return section substantially opposite the active section; and second sensor elements associated with the rolling device for detecting the behaviour of the wheel when pressed by the rolling device.

Abstract: The tyre-changing machine includes: a base frame; a grip unit fitted on the base frame for revolving around a rotation axis and for gripping a vehicle wheel having a rim and a tyre to fit/remove; first operating elements for placing the grip unit in rotation around the axis; at least an operating head fitted on the base frame and having at least a work tool; second operating elements for positioning the operating head and the wheel in a work configuration wherein the tool contacts the tyre; the grip unit including a first measuring portion subject to a stress condition due to the contact, in correspondence to the first measuring portion, first sensor elements for detecting the stress condition of the first measuring portion and operatively associated with a processing and control unit for determining a danger condition of the tyre starting from the stress condition.

Abstract: A machine for balancing vehicle wheels includes: a base frame; a balancing shaft on which a vehicle wheel to be balanced can be fixed; a rotoidal resting unit, fitted on the base frame and supporting the balancing shaft in a revolving way around its own axis; and motor elements for placing in rotation the balancing shaft around its own axis; wherein the balancing shaft includes at least a measuring section which is magnetized and subject to a stress condition due to the unbalance of the wheel revolving on the balancing shaft, in proximity of the measuring section being arranged magnetic field sensor elements which are suitable for detecting by magnetostrictive effect the stress condition of the measuring section and are operatively associated with at least one processing and control unit suitable for determining the unbalance of the wheel starting from the stress condition of the measuring section.

Abstract: Machine for balancing vehicle wheels includes: a base frame supporting elements for gripping and rotating a wheel around a balancing axis; first sensor elements associated with the gripping and rotation elements for detecting the unbalance of the wheel; an electronic processing and control unit associated with the first sensor elements for calculating a balancing weight to apply onto the wheel; and an auxiliary detection appliance associated with the base frame and having: a rolling device for pressing onto the wheel, and in turn including: a support structure for two rollers revolving around axes parallel to each other; and a flexible member closed on itself in a loop, wrapped around the rollers and having a substantially flat active section, and a return section substantially opposite the active section; and second sensor elements associated with the rolling device for detecting the behaviour of the wheel when pressed by the rolling device.

Abstract: The balancing machine for balancing vehicle wheels includes a base frame for supporting a balancing shaft, which receives the vehicle wheel. A plurality of light sources are arranged in a ring around the balancing shaft, and a plurality of pattern generators projects images onto the side of the wheel to form reference points. The light sources are split into sectors, and at least one pattern generator is arranged between two sectors of the light sources. Laser pointers may be used as pattern generators.

Abstract: The balancing machine for balancing vehicle wheels comprises a base frame supporting a balancing spindle for balancing a vehicle wheel, a lifting device associable with the base frame and suitable for fitting and removing the wheel onto and off the balancing spindle, and a protection guard associable with the base frame and suitable for covering the wheel fitted on the balancing spindle, the lifting device and the protection guard being integrated together in a multifunctional device.

Abstract: The balancing machine for balancing vehicle wheels comprises a base frame supporting a balancing shaft for balancing a vehicle wheel and illumination means for illuminating the wheel which comprise a plurality of light sources arranged substantially around the balancing shaft.

Abstract: The balancing machine for balancing vehicle wheels comprises a base frame supporting a balancing spindle for balancing a vehicle wheel, a lifting device associable with the base frame and suitable for fitting and removing the wheel onto and off the balancing spindle, and a protection guard associable with the base frame and suitable for covering the wheel fitted on the balancing spindle, the lifting device and the protection guard being integrated together in a multifunctional device.

Abstract: A machine for balancing vehicle wheels, such wheels including a rim with a pair of axially spaced, ring-shaped or annular, flanges, and a tire seated up on the rim. The machine includes a frame with motor driven devices for gripping the vehicle wheel to be balanced and rotating same about a horizontal axis. A mechanical feeler, or probe, determines the position of the first of the pair of , flanges on the rim. A contact-less, or remotely spaced, sensor, such as a laser, ascertains the profile of the tire by taking a series of discrete measurements without touching the tire. The mechanical feeler, or probe, and the contact-less sensor, are connected to a control unit in the machine. The control unit interpolates the values provided by the mechanical feeler and the contact-less sensor, and determines the location of the second flange on the wheel rim.

Abstract: Lifting device for fitting vehicle wheels on wheel balancers, comprising a support platform for at least one vehicle wheel to be fitted on/removed from the substantially horizontal balancing shaft of a wheel balancer, a jack for lifting or elevating said platform, and grooves and side appendices on said platform that enable the platform to slide relative to a base in a substantially parallel direction to said balancing shaft, a first and second jaw on said platform, and an actuator for translating one jaw relative to the other jaw, so that the jaws engage opposite sides of the vehicle wheel and retain same in a vertical orientation on the support platform. The actuator is located below the support platform, and is connected to one of the jaws by a bracket which passes through a slot in the support platform.

Abstract: A machine for balancing vehicle wheels, such wheels including a rim with a pair of axially spaced, ring-shaped or annular, flanges, and a tire seated up on the rim. The machine includes a frame with motor driven devices for gripping the vehicle wheel to be balanced and rotating same about a horizontal axis. A mechanical feeler, or probe, determines the position of the first of the pair of flanges on the rim. A contact-less, or remotely spaced, sensor, such as a laser, ascertains the profile of the tire by taking a series of discrete measurements without touching the tire. The mechanical feeler, or probe, and the contact-less sensor, are connected to a control unit in the machine. The control unit interpolates the values provided by the mechanical feeler and the contact-less sensor, and determines the location of the second flange on the wheel rim.

Abstract: Lifting device for fitting vehicle wheels on wheel balancers, comprising a support platform for at least one vehicle wheel to be fitted on/removed from the substantially horizontal balancing shaft of a wheel balancer, lifting means of said platform and sliding means of said platform in a substantially parallel direction to said balancing shaft, characterized in that it comprises removable means of retention of said wheel on said platform in a work configuration in which the rotation axis of the wheel itself is substantially parallel to said balancing shaft.

Abstract: A spindle for fastening rims of vehicle wheels on repair shop machines, which comprises a frame that can be associated rotationally about a working axis with a repair shop machine, six or more movable arms that are associated with the frame, are distributed around the working axis and can rotate about respective rotation axes that lie on a plane that is substantially perpendicular to the working axis, and claws for gripping the rim of a vehicle wheel, which are associated with the arms and on which it is possible to fit the internal cylindrical portion of the rim.

Abstract: A machine for fitting and removing tires of vehicle wheels, which comprises a frame for supporting a movable structure that supports a grip and rotation member for rotating a vehicle wheel rim about a rotation axis, and an arm that supports a tool for fitting and/or removing a tire on and/or from the rim and can be arranged along a working direction that is perpendicular to the rotation axis; the structure comprises a first portion, which is movably associated with the frame, and a second portion, which is movably associated with the first portion and supports the grip and rotation member, the first and second portions cooperating with each other to position the grip and rotation member in a working configuration, with the rotation axis and the working direction incident and the circumferential portion of the wheel rim arranged proximate to the tool.

Abstract: A spindle for fastening rims of vehicle wheels on repair shop machines, which comprises a frame that can be associated rotationally about a working axis with a repair shop machine, six or more movable arms that are associated with the frame, are distributed around the working axis and can rotate about respective rotation axes that lie on a plane that is substantially perpendicular to the working axis, and claws for gripping the rim of a vehicle wheel, which are associated with the arms and on which it is possible to fit the internal cylindrical portion of the rim.

Abstract: The invention relates to a method for balancing motor vehicle wheels, comprising the phases of: mounting a wheel on a rotatable shaft, setting the shaft and wheel in rotation, reading off any forces due to an imbalance in a wheel by means of force transducers, processing signals coming from the transducers by means of a processor, in order to provide an indication of an entity and geometrical arrangement of masses to be applied to the wheel in order to correct any detected imbalance. With the method, a balancing speed is determined in accordance with at least one parameter indicating an inertia to rotation of the wheel, according to a correspondence in which a balancing speed is lower for a wheel having higher inertia.

Abstract: A method for calculating vehicle wheel alignment, comprising: use of two television cameras arranged in such positions as to frame and observe two different visual angles contemporaneously of a single wheel of a vehicle; designation of geometrical entities characteristic of said single wheel by means of which a plane of said wheel is identified; calculation of two transformations between coordinates of at least three unaligned points of said plane of said wheel and position of said correspondences respectively on focal planes on which images of said television cameras are formed, by means of two application matrices; calculation of said application matrices obtained by means of observation of the two television cameras of a set of points positioned in a known way in space; calculation of two inverse applications through which it is possible to derive coordinates in space of three unaligned points of said wheel plane starting from a knowledge of the coordinates of said points of focal planes of said two televi

Abstract: The invention refers to procedure and equipment wherein there is a bi-directional communication between a central processing unit (3) and peripheral processing units (6a, 6b, 6c, 6d) associated to measuring devices (1) applied on vehicle wheels by means of a ring structure in which the data circulates in only one direction with a mono-directional or simplex transmission in the single ring tracts between one unit and an immediately successive one. A screened cable or an infrared cable is used.