| 摘要 |
The present invention relates to a tyre-type device (1) for equipping a vehicle, having an improved flattening of the tread thereof compared to a standard tyre. The tyre-type device (1) comprises two revolving structures, radially outer (2) and radially inner (3) respectively, a carrier structure (6) made from identical carrier elements (61), being extended outside of the content area (A) with the ground and compressed in the contact area (A), and two sidewalls (9). The carrier elements (61) are wire elements and are respectively connected to the radially inner face (23) of the radially outer revolving structure (2) by a radially outer fabric (71) and to the radially outer face (33) of the radially inner revolving structure (3) by a radially inner fabric (72). In addition, the mean area density D of the carrier elements (61) per unit area of the radially outer revolving structure (2), expressed in 1/m2, is at least equal to (S/SE)*Z/(A*Fr), where S is the area, in m2, of the radially inner face (23) of the radially outer revolving structure (2), SE is the connecting area, in m2, of the radially outer fabric (71) with the radially inner face (23) of the radially outer revolving structure (2), Z is the nominal radial load, in N, A is the contact area with the ground, in m2, and Fr is the breaking strength, in N, of a carrier element (61). |
