摘要:
The invention relates to a purging device for an assembled unit for a vehicle, consisting of a wheel having a rim and a tyre. According to the invention, said purging device comprises a body connected to the inflation tube of the assembled unit, said body being designed to be subjected to the inflation pressure of the assembled unit, and a piston moving inside the body, said piston operating a valve, which is integral with the piston, between a closed position and a purging position for purging the body, said valve being normally closed, the valve and the piston each having a face designed to be exposed to the inflation air inside the body when in the closed position and the valve being opened by a control force applied to the piston. The invention also provides a method of deflating an assembled unit.
摘要:
The invention relates to a tyre that is intended to be mounted on a vehicle supporting a heavy load, such as a truck, a civil engineering vehicle and/or an aircraft, said tyre comprising a carcass reinforcement whereon is radially mounted a crown reinforcement and a tyre tread. According to the invention, the crown reinforcement (3) comprises at least two plies (31, 32) of metallic reinforcing elements which are mutually parallel in each ply and criss-crossed from one ply to the next, forming an angle of between 10 and 35° with the circumferential direction. Said crown reinforcement also comprises a ply (5) of reinforcing elements at least in each shoulder which are mutually parallel in the ply and which are oriented radially. Moreover, the axially inner edge (51) of said ply (5) is disposed such that it is radially adjacent to at least one edge of one of the plies (30, 31, 32, 33) of the crown reinforcement (3) while the axially outer edge (52) of said ply (5) is radially lower than the edge of the above-mentioned adjacent ply.
摘要:
The inventive tyre comprises two beads (11) and a radial carcass reinforcement (12) anchored to each bead by a fold (15), thereby forming at least one loop around the circumferential reinforcement layer (13) of the bead, wherein, in the mid cross-section view, said fold begins at an starting point (A1) corresponding to the intersection point between the carcass reinforcement and a straight line (D) perpendicular to the axis of rotation of the tyre and passes the radially-innermost point (A) of the circumferential reinforcement layer (13) of the bead. Said tyre is embodied in such a way that in the mid cross-section view, the end (F) of the turning (15) is disposed between said turning (15) of the carcass reinforcement and the circumferential reinforcement layer (13) of the bead.
摘要:
The invention relates to a tyre P comprising a radial carcass structure which is radially covered by a dome structure consisting of at least two working crown plies formed from metallic reinforcing elements which are crossed from one ply to another, creating angles between 10 DEG and 45 DEG with the circumferential direction, and at least one additional structure formed from circumferentially oriented metallic reinforcing elements. According to the invention, at least one additional layer is radially located on the inside of the working dome layers, the axial width of said additional layer being larger than the width of the axially widest dome layer, and the reinforcing elements of the additional layer are metallic reinforcing elements having a secant module with a 0.7 % extension capacity between 10 and 120 GPa and a maximum tangent module lower than 150 GPa.
摘要:
The inventive tyre comprises two beads (11) and a radial carcass reinforcement (12) anchored to each bead by a fold (15), thereby forming at least one loop around the circumferential reinforcement layer (13) of the bead, wherein, in the mid cross-section view, said fold begins at an starting point (A1) corresponding to the intersection point between the carcass reinforcement and a straight line (D) perpendicular to the axis of rotation of the tyre and passes the radially-innermost point (A) of the circumferential reinforcement layer (13) of the bead. Said tyre is embodied in such a way that in the mid cross-section view, the end (F) of the turning (15) is disposed between said turning (15) of the carcass reinforcement and the circumferential reinforcement layer (13) of the bead.
摘要:
The invention relates to a running gear for a semi-trailer in which the rear axle (W1) comprises, on each of its sides, right and left, a support (2) connected to the end (10) of a cross member (1) and a wheel mounted so that it can rotate on this support (2) about an axis (Y), the support (2) being itself mounted so that it can pivot with respect to the cross member (1) by means of a pivot connection (4), and each wheel being thus subjected to a pivoting moment if the trailer takes a bend. According to the invention, each wheel of this axle is urged by a preloaded elastic means (5) towards an angular position in which it runs in a straight line, and is allowed to pivot only if a torque of a value higher than a threshold value is applied to this wheel.
摘要:
The invention relates to a wheel set for a semi-trailer comprising at least one front axle (W1) and one rear axle (W2) each of which is provided with a cross-member (1) and with right and left wheel supports (2), each support being pivot-mounted with respect to the cross-member (1) by means of a pivot connection (4), and each wheel being thus subjected to a turning moment when the semi-trailer is cornering. According to the invention, each wheel is mounted such that it can pivot individually and the wheel set comprises torque-transmitting members (6) which are designed to transmit a turning moment between the supports (2) with which the front axle (W1) is equipped and the supports (2) with which the rear axle (W2) is equipped.