Abstract:
The bead-breaking unit (1) for a tyre-changing machine (2) comprises: a supporting frame (6); a bead-breaking arm (7) having a first extremity hinged to the frame (6) and a second opposite extremity having a bead-breaking tool (8) suitable for breaking the bead of a tyre; operation means (9) for the movement of the arm (7) fitted on the frame (6); and fitting means (22) to fit in a removable way the frame (6) onto the machine (2).
Abstract:
The balancing machine (1) for the balancing of vehicle wheels comprises: - a base frame (2); a balancing shaft (3) substantially horizontal on which can be fixed a vehicle wheel (R) to be balanced; a rotoidal resting unit (6, 7, 8) supporting the balancing shaft (3) in a rotatable way around its own axis; - motor means (9) for placing in rotation the balancing shaft (3) around its own axis; a bending-torsional structure (12, 13, 14) having a first plate (12), a second plate (13) and a third plate (14) arranged in a U-shape, wherein the first plate (12) is associated with the base frame (2) and connects the second plate (13) to the third plate (14) and wherein the second plate (13) and the third plate (14) support substantially opposite sides.of the rotoidal resting unit (6, 7, 8) and are subject to a bending-torsional condition due to the effect of the unbalance of the wheel (R) in rotation on the balancing shaft (3); - sensor means (20, 21) associated with at least one between the second plate (13) and the third plate (14) and suitable for detecting the bending-torsional condition; and a processing and control unit (22) operatively associated with the sensor means (20, 21) and suitable for determining the unbalance of the wheel (R) starting from the bending-torsional condition.
Abstract:
The method (M) for detecting the shape and/or dimensions of a wheel (3) on vehicle repair workshop machines or the like comprises the stages of: projection (B 1, B 2 ) of a line of light (6) onto the surface of a portion of a wheel (3) mounted rotating on a vehicle repair workshop machine (1) or the like; acquisition (C 1 , C 2 ) of at least a two-dimensional image (I;) of the projected line of light (6); processing (F) of the acquired image (I j ) to determine the profile (P i ) of the portion of the wheel (3); at least two stages (D 1 , D 2 ) of complete rotation of the wheel (3); and a distributed detection stage (A), wherein the projection stage (B 1 , B 2 ) and acquisition stage (C 1 , C 2 ) are performed in correspondence to first angular positions (α j ) of the wheel (3) during the first rotation stage (D 1 ), and in correspondence to second angular positions (α k ) of the wheel (3) during the second rotation stages (D 2 ), the first angular positions (α j ) and the second angular positions (α k ) being at least partially distinct the one from the other.
Abstract:
The tyre-changing machine (1) comprises: a base structure (2) which can rest on the ground; a gripping and rotation unit (3), suitable for gripping the rim (4) of a wheel (4, 5) and placing it in rotation, mounted on a front part of the structure (2); a supporting post (10), arranged at the rear of the unit (3), connected to the structure (2) by means of a hinge (11) arranged in correspondence to a front part of the post (10) facing the unit (3), the post (10) being rotatable around the hinge (11) between a work position, wherein it is closer to the unit (3), and a disengagement position, wherein it is tilted to the rear and is farther from the unit (3); and a tool-carrying arm (12) fitted on the post (10) suitable for carrying a tool (13) to fit / remove a tyre (5) onto / from the rim (4).
Abstract:
The balancing machine (1) for balancing vehicle wheels comprises: a base frame (2) supporting gripping and rotation means (3) for gripping and rotating a wheel (R) for vehicles around a balancing axis (A), first sensor means (4) associated with the gripping and rotation means (3) suitable for detecting the unbalance of the wheel (R), an electronic processing and control unit (5) associated with the first sensor means (4) for the calculation of at least a balancing weight to apply onto the wheel (R) to balance the unbalance, and an auxiliary detection appliance (6, 7, 8) associated with the base frame (2) and having: a rolling device (6) suitable for pressing onto the wheel (R), and in turn comprising: a support structure (9, 10) for two rollers (11) revolving around axes parallel to each other, and a flexible member (12) closed on itself in a loop, wrapped around the rollers (11) and having a substantially flat active section (12a), suitable for pressing on the wheel (R) to simulate the rolling thereof on the road, and a return section (12b) substantially opposite the active section (12a), and second sensor means (8) associated with the rolling device (6) and suitable for detecting the behaviour of the wheel (R) when pressed by the rolling device (6).
Abstract:
The machine (1) for balancing the wheels of a vehicle comprises: a supporting frame (2) provided with a rotating shaft (20) adapted to support and set a wheel (R) to be balanced in rotation; detection means for detecting the unbalance of the wheel (R); identification means (3) for identifying at least one portion of the wheel (R) for the measurement of characteristic parameters, which comprise: an emitter (30) of laser radiation (31) along an optical emission path (32) lying at least partly on a predefined plane of emission (X-Y); and a detector (34) to receive the laser radiation (31) and arranged along an optical receiving path (35); reflection means (4) adapted to deflect the optical emission path (32) and the optical receiving path (35), the optical emission path (32) being substantially coincident with the optical receiving path (35).
Abstract:
The tool-carrying arm (1) for a tyre-changing machine (2) comprises: a first rod (6) suitable for carrying a tool to fit/remove a tyre onto/ from a rim of a wheel, the first rod (6) being suitable for axially sliding along a substantially vertical direction; and a second rod (8) which supports the first rod (6), suitable for being mounted on a supporting post (5) of the tyre-changing machine (2) and suitable for axially sliding along a substantially horizontal direction; wherein at least one of the first and second rods (6, 8) has a lateral surface (9, 10, 11, 12, 13, 14, 15, 16) at least in part cylindrical with a section only partially circular.
Abstract:
The balancing machine (1) for balancing vehicle wheels comprises: a base frame (2); - - a balancing shaft (3) on which a vehicle wheel (R) to be balanced can be fixed; - a rotoidal resting unit (6, 7), fitted on the base frame (2) and supporting the balancing shaft (3) in a revolving way around its own axis; - motor means (13) for placing in rotation the balancing shaft (3) around its own axis; wherein the balancing shaft (3) comprises at least a measuring section (16) which is magnetized and subject to a stress condition due to the unbalance of the wheel (R) revolving on the balancing shaft (3), in proximity of the measuring section (16) being arranged magnetic field sensor means (17,.18) which are suitable for detecting by magnetostrictive effect the stress condition of the measuring section (16) and are operatively associated with at least one processing and control unit (19) suitable for determining the unbalance of the wheel (R) starting from the stress condition of the measuring section (16).
Abstract:
The tyre-changing machine (1) comprises: a base frame (2) which can rest on the ground; a gripping and rotation unit (3) of a wheel mounted on the frame (2); a main arm (4) mounted on the frame (2) and carrying removal/fitting means for removing and/or fitting the tyre from/on the wheel; an auxiliary arm (6) mounted on the frame (2), carrying aiding means (7) for aiding the fitting/removal and suitable for moving between a work position where the aiding means (7) are positioned in correspondence to the unit (3) and an idle position where the aiding means (7) are moved away from the unit (3); and locking means (13, 14, 15, 16, 20) to lock in a releasable way the auxiliary arm (6) in the idle position.
Abstract:
The supporting plate (1) for a self-centering chuck (2) meant to support and lock the rim of a wheel comprises: - a main element (8), comprising a plurality of spokes (10), each having a groove (11) wherein respective jaws (12) of the chuck (2) can slide; and a plurality of peripheral sectors (14), each fixed to the main element (8) between two spokes (10).