The present invention regards a group for bead releasing a tyred wheel and/or for thrusting a portion of a tyre (T) of a tyred wheel (TW), and such group comprises a base, a supporting column rising from the base, a tool-supporting arm extending from the supporting column and a bead releasing and/or thrust tool supported by the tool-supporting arm.

The disclosure discloses a high-precision wheel assembling device, which is high in size and shape precision, good in dynamic balance, high in fatigue strength, good in rigidity and elasticity, light in weight, attractive in appearance and recyclable in material.

A table comprising a worktop including an axis of rotation, a perimeter, and an effective radius, the effective radius defined as the average distance between the axis of rotation and the perimeter; a frame; a rotational connection disposed between the worktop and the frame, the connection configured to allow the worktop to rotate about the axis of rotation; and a plurality of bearings disposed between the worktop and the frame to rollingly support the worktop on the frame, at least one of the bearings disposed more than half of the effective radius from the axis of rotation.

A jaw (1) for clamping a wheel rim comprises a body (2) extending along a longitudinal orientation (L). The body (2) includes: a connecting portion (22) configured to be connected to the head of the wheel-holder unit; a base portion (21) extending along the longitudinal orientation (L); a first abutment wall (23) extending from the base portion (21) along a clamping orientation (R); a second abutment wall (24) extending from the base portion (21) along the clamping orientation (R) in a spacing-apart direction (VA) and longitudinally spaced from the first abutment wall (23) by a working distance (DL); an abutment surface (251), longitudinally interposed between the first abutment surface (23) and the second abutment surface (24) and including a first portion (251A) and a second portion (251B, 251C), disposed at an advanced position relative to the first portion (251A) in the spacing-apart direction (VA) of the clamping orientation (R) to come into contact with the wheel rim. The second portion is spaced from the first abutment wall (23) along the longitudinal orientation (L) by a first abutment distance (D1), greater than 30% of the working distance (DL).

A hub chuck, includes a clamping center shaft, a top cover plate, a middle step gear and a tapered bottom plate. In a three-layer structure of the cover plate, the step gear and the tapered bottom plate of the chuck, the maximum outer ring diameter of the cover plate is smaller than that of the step gear, the minimum outer ring diameter of the step gear is smaller than that of the tapered bottom plate, the lower part of the step gear and the upper surface of the tapered bottom plate form a ring groove, a lower rim of a hub can be caught in the ring groove, and tapered teeth at the upper part of the step gear can be pressed to an inner wheel lip.

The present invention discloses a tire disassembly and assembly booster arm device installed on an upright of a tire disassembly and assembly machine. The tire disassembly and assembly booster arm device includes a first tire pressing arm and a second tire pressing arm. A first polished shaft and a second polished shaft are symmetrically arranged on two sides of the upright. An air cylinder hanging frame is installed on the top surface of the upright, and an air cylinder is suspended on the air cylinder hanging frame. One end of a piston rod of the air cylinder is connected to a sliding frame connecting frame. A first sliding frame is connected to the first polished shaft in a sliding mode. The front end of the first sliding frame is hinged to the first tire pressing arm, and the rear end of the first sliding frame is connected to one side of the sliding frame connecting frame. A second sliding frame is connected to the second polished shaft in a sliding mode. The front end of the second sliding frame is hinged to the second tire pressing arm, and the rear end of the second sliding frame is hinged to the other side of the sliding frame connecting frame. The tire disassembly and assembly booster arm device may drive the first tire pressing arm and the second tire pressing arm to descend at the same time, so that a tire is pressed to be separated from a hub, which has convenient operations, realizes an assisting mode of one cylinder with two arms, and has the advantages of simple structure, easy for disassembly and assembly, improves work efficiency, and reduces manufacturing and transportation cost.

A machine (1) configured to remove and mount a tyre from and on a respective rim of a vehicle wheel (2), comprises: an operating arm (4) directed along a longitudinal orientation; a head (5) supported by the operating arm (4); a first tool and a second tool. The first tool is connected to the head (5) and projects in a first direction; the second tool is connected to the head (5) and, in a first operating configuration of the head (5), is disposed in a first position where it projects in a second direction, opposite to the first direction. The second tool is pivoted to the head (5) to rotate about an axis of tilt (406′) transverse to the longitudinal orientation (402) to move from the first position to a second position, corresponding to a second operating configuration of the head (5) and tilted upside down relative to the first position, to project in the first direction.

A vertical tire changer with a double-sided tool and an overturning structure is provided. The vertical tire changer includes a pedal, a base, an operating platform, a pulley, a double-sided tool rotating structure, a small pressing wheel structure, a large pressing wheel structure, a lifting seat and a rotating chuck. A wheel hub is clamped above the rotating chuck so that the rotating chuck rotates to a horizontal position. The ends of the double-sided tool rotating structure are provided with a straight hook portion and a bent hook portion respectively. The straight hook portion is configured for tire mounting, and the bent hook portion is configured for tire dismounting. The small pressing wheel structure and the large pressing wheel structure can both be contracted and extended in the using process. The small pressing wheel structure and the large pressing wheel structure play an auxiliary supporting role.

A device for mounting and removing a tire on/from a rim includes a pincers element which is pivoted in a tool body with respect to the main frame and can grip a tire bead; the pincers element performs a preset rotation together with the tool body, moving away from the rim edge by performing a motion over the edge without making contact with the rim at the end of the rotation; the pincers element releases the bead on the outer edge of the rim, in a removal operation, or in the inner seat of the rim, in a mounting operation.

A tyre changing machine (1), configured to remove a tyre from a respective rim of a vehicle wheel (2), comprises an operating arm (4) which includes: a supporting structure (401); a head (5) movable along a longitudinal axis (402) relative to the supporting structure (401); a removal tool (403) pivoted to the head (5) to rotate relative thereto about an axis of oscillation (405′) transverse to the longitudinal axis (402); a driving member (6) movable along an operating axis (402′) parallel to the longitudinal axis (402) relative to the supporting structure (401) and to the head (5), and articulated to the removal tool (403) at an operating point (P) which is spaced from the axis of oscillation (405′); an actuator (407) comprising a stationary member (407a), connected to the supporting structure (401), and a movable member (407b), adapted to drive the removal tool (403) in rotation and in translation; a coupling member (7) coupled to the supporting structure (401), to the head (5) and to the driving member (6). The movable member (407b) of the actuator (407) is connected to the driving member (6) to directly drive it along the operating axis (402′).