Abstract

Described is a device for locking a rim of a wheel to a wheel-holder unit (4) equipped with a supporting plate (12) and a hollow rotary shaft having an end portion projecting in a cantilever fashion from the supporting plate (12) comprising: a centring cone (16) having a through hole; a clamping rod (11) having at a first end a clamping element (10) which can be inserted inside the hollow shaft to prevent a movement of the clamping rod (11) along a first axis (A) of the wheel-holder unit (4), and having at a second end a threaded portion; a clamping element (17) coupled to the threaded portion and which can be rotated for translating along an axis of the clamping rod; a centring flange (23) operatively interposed between the centring cone (16) and the clamping element (17) and having a central through hole, a first face and a second face from which two or more centring rods (23b) project in a cantilever fashion which can be inserted into corresponding radial openings of the rim. The first end of the clamping rod (11) is operatively inserted in the hole of the centring flange (23), with the same direction as that in which the centring rods (23b) project, and in the hole of the centring cone (16), with the opposite direction to that along which the centring cone (16) is tapered.

IPC Classes  ?

• B60C 25/05 - Machines
• B60C 25/138 - Machines for removing and mounting tyres having a tyre support or a tool, movable along wheel axis with rotary motion of tool or tyre support
• G01M 17/02 - Tyres

Abstract

An apparatus (1) for diagnostic assessment of the set-up of a vehicle (2) comprises: two contact tracks (6) for tyres (4) of the vehicle (2) having two stretches adjacent to corresponding optical measuring devices (11), for detecting image information of a pair of front wheels (3) of the vehicle (2) resting on said stretches of the tracks (6) in a first operating position of the vehicle (2); a processing unit (18) programmed to process the image information and calculate a position in space of the front wheels (3) of the vehicle. The processing unit (18) implements a model of operation of a vehicle on the road, and is programmed to calculate: (i) an ideal trajectory of the vehicle (2) being assessed, depending on a type of vehicle set, the position of the front wheels (3) and the model; (ii) an actual trajectory followed by the vehicle (2) being assessed during a movement from the first operating position to a second operating position, in which the rear wheels (3) of the vehicle (2) rest on said stretches of the tracks (6), depending on the type of vehicle, the position detected for the front wheels (3) and further image information taken by a further optical measuring device (21) relating to at least one predetermined portion of the vehicle (2) and detected at least when it is in the second operating position. The processing unit (18) is programmed to derive diagnostic indications, depending on a deviation of said actual trajectory relative to said ideal trajectory.

IPC Classes  ?

• G01B 11/27 - Measuring arrangements characterised by the use of optical techniques for measuring angles or tapersMeasuring arrangements characterised by the use of optical techniques for testing the alignment of axes for testing the alignment of axes
• G01B 11/275 - Measuring arrangements characterised by the use of optical techniques for measuring angles or tapersMeasuring arrangements characterised by the use of optical techniques for testing the alignment of axes for testing wheel alignment

Abstract

A method and a machine for removing a tyre (100) from a rim (101) using a demounting tool (7) which is mobile on a support body (5, 51) between a first operating position and a second operating position, to which operating positions correspond different inclinations of the demounting tool (7) with respect to an axis (A) of the rim (101); the method including a stage of inserting the demounting tool (7), which is in the first operating position, between a side of the tyre (100) and an edge of the rim (101), and subsequently moving the demounting tool (7) from the first operating position to the second operating position, by means of a movement of the support body (5, 51) towards the axis (A) of the rim (101), such that the edge of the rim (101) pushes the demounting tool (7) towards the second operating position.

IPC Classes  ?

• B60C 25/138 - Machines for removing and mounting tyres having a tyre support or a tool, movable along wheel axis with rotary motion of tool or tyre support

Abstract

A tyre-changing machine comprising support means (4) for a wheel, a tool- bearing arm (50) at an end of which a bead-breaking tool (6) is hinged according to a hinge axis (E) which is perpendicular to an axis (A) of the wheel, and first motohsed means (32, 33) for causing a relative movement, in a parallel direction to the axis (A) of the wheel, between the support means (4) and the tool-bearing arm (50), such as to press the bead-breaking tool (6) against a flank of a tyre on the wheel, characterised in that it comprises second motorised means (64), activatable independently from the first motorised means (32, 33), which second motorised means (64) are destined to rotate the bead-breaking tool (6) about the hinge axis (E) with the too- bearing arm (50), in order to vary an inclination of the bead-breaking tool (6) with respect to the axis (A) of the wheel which is mounted on the support means (4).

IPC Classes  ?

• B60C 25/138 - Machines for removing and mounting tyres having a tyre support or a tool, movable along wheel axis with rotary motion of tool or tyre support

Abstract

A method and a device for checking a vehicle, the method comprising a stage of measuring a wear parameter of at least one tyre of the vehicle, and a stage of using the measurement to estimate a limit to future use of the vehicle, up to which limit the vehicle can be predicted to remain efficient.

IPC Classes  ?

• B60C 11/24 - Wear-indicating arrangements
• G01M 17/02 - Tyres

Abstract

A device and a method for checking an attitude of a vehicle (100), comprising at least a measuring instrument (3) for measuring at least one characteristic attitude parameter, in which the measuring instrument (3) is installed on board a self-propelled unit (2) which moves autonomously on the ground, in such a way as to follow variable trajectories.

IPC Classes  ?

• G01B 11/275 - Measuring arrangements characterised by the use of optical techniques for measuring angles or tapersMeasuring arrangements characterised by the use of optical techniques for testing the alignment of axes for testing wheel alignment
• G01B 21/26 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapersMeasuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for testing the alignment of axes for testing wheel alignment

Abstract

A tyre-changing machine comprising a chuck (5) having a self-centring group (51 ) for blocking a rim (100) of a wheel, which self-centring group (51) comprises a plurality of blocking jaws (7) of the rim (100) arranged angularly equidistanced along a circumference centred on a rotation axis (A) of the chuck (5), and means for moving (52, 57) for radially distancing and nearing the blocking jaws (7) with respect to the rotation axis (A) of the chuck (5) such as to vary a diameter of the circumference on which the blocking jaws (7) are arranged while maintaining an inclination of each blocking jaw (7) constant with respect to the rotation axis (A) of the chuck (5), characterised in that each blocking jaw (7) comprises a first portion (70) which is connected to the means for moving (52, 57), and a second portion (71 ) which is mobilely coupled to the first portion (70) such as to be able to change an overall development of the blocking jaw (7) in a radial direction with respect to the rotation axis (A) of the chuck (5).

IPC Classes  ?

• B60C 25/138 - Machines for removing and mounting tyres having a tyre support or a tool, movable along wheel axis with rotary motion of tool or tyre support
• B60B 30/00 - Means for holding wheels or parts thereof

Abstract

A method and a machine for balancing vehicle wheels with weights (18), the method comprising stages of: using a video camera (5, 6, 206) to frame a portion of a surface of a hub (101) of a wheel on which a weight (18) is to be applied, locating, in images of the hub (101) taken by the camera (5, 6, 206), at least a balancing plane (E1 , E2) which is perpendicular to a rotation axis (A) of the wheel, piloting at least a pick-up device (8, 9, 209) such as to direct the at least a pick-up device (8, 9, 209) onto a point (P1 , P2) of the hub (101) belonging to the balancing plane (E1 , E2), detecting, by means of the pick-up device (8, 9, 209) characteristic geometric parameters of the hub (101) at the balancing plane (E1 , E2), measuring an imbalance of the wheel, calculating, by means of an electronic calculator (4, 204) an entity of at least a weight (18) to be applied to the hub (101) at the balancing plane (E1 , E2), and also calculating an angular position (T1 , T2) of the weight (18) in the balancing plane (E1 , E2).

IPC Classes  ?

• G01M 1/02 - Details of balancing machines or devices
• G01M 1/08 - Instruments for indicating directly the magnitude and phase of the imbalance
• G01M 1/32 - Compensating imbalance by adding material to the body to be tested, e.g. by correcting-weights

Abstract

The present invention relates to an accessory device for tyre disassembling machines designed to simplify tyre disassembling, and more precisely the lifting of one of the heels after extracting the other heel from the rim; the heel- lifting device (11 ) of the invention is provided with means for removable fixing to the wheel-lifting tool (A) provided on modern tyre disassembling machines (1 ).

IPC Classes  ?

• B60C 25/132 - Machines for removing and mounting tyres