摘要:
Bolt comprising a three-dimensional body substantially extended along a first direction defined on a first axis (X), having at least one side wall (401), a tip portion (405) adapted in use to first contact the ground or road surface and a head portion (402), axially opposite to said tip portion, wherein in correspondence of said side wall (401), in an intermediate position between said head portion (402) and said tip portion (405), there is a retention flap for extraction (406), said retention flap for extraction (406) extending outside the profile of said at least one side wall (401) and being inclined with respect to the latter with an obtuse angle with respect to said first direction; said retention flap for extraction (406) exerting a counter-action on the ground if said bolt (400) is subjected to an extraction force from said ground or road surface.
摘要:
Road barrier (100), comprising a box-like structure extending along a first direction of greater extension; having a tapered upper portion (101, 102; 103) and a lower portion (104), joined to said upper portion; an enlarged base extending, along a second direction orthogonal with respect to said first direction of greater extension, by a width greater than the width that said tapered upper portion has along said same second direction; said barrier (100) being adapted in use for being at least temporarily rigidly anchored to the ground or road surface in correspondence of the lower portion (104) thereof; said barrier comprising at least one first wheeled trolley (210), axially mobile along a third direction orthogonal with respect to said first and second direction.
摘要:
Compressible shock absorber (100), characterized in that it includes at least one pair of shock absorbing elements (110) co-axial and telescopic reciprocally sliding along a longitudinal sliding axis (X); said shock absorbing elements (110) co-axially include a cavity (115) and include therein a compressible air volume during their axial sliding reciprocal between a first position of maximum axial extension and a second position of lower axial extension; said at least one pair of shock absorbing elements (110) includes air extractors (140) susceptible of allowing an extraction of the air from said internal volume progressive with the reduction of the axial extension following the impact of a vehicle against said shock absorber.
摘要:
Fixing device (100) for guardrails and method of installation of said device (100), the device suitable for being interposed between a first and a second portion of guardrail, comprising at least one first configuration of lower longitudinal extension and a second configuration of greater extension, wherein said second configuration of greater extension takes place in case said device (100) is slowly stretched da said portions of guardrail per thermal dilation. in case of potential impact of a vehicle in a point of the guard-rail adjacent to the device, the block (151) engages into the guide (140) and blocks the relative motion between the guide (140) and the profile (101). the device (100) comprises elastic means (140) operating in combination with a hydromechanic organ (120) linearly extensible and causing a selective blocking of the longitudinal extension according to a speed and/or impulse of force exerted between a first and a second end of said device (100), and in particular in case said speed and/or impulse of force exerted exceed a predetermined threshold value.
摘要:
Fixing device (100) for guardrails and method of installation of said device (100), the device suitable for being interposed between a first and a second portion of guardrail, comprising at least one first configuration of lower longitudinal extension and a second configuration of greater extension, wherein said second configuration of greater extension takes place in case said device (100) is slowly stretched da said portions of guardrail per thermal dilation. in case of potential impact of a vehicle in a point of the guard-rail adjacent to the device, the block (151) engages into the guide (140) and blocks the relative motion between the guide (140) and the profile (101). the device (100) comprises elastic means (140) operating in combination with a hydromechanic organ (120) linearly extensible and causing a selective blocking of the longitudinal extension according to a speed and/or impulse of force exerted between a first and a second end of said device (100), and in particular in case said speed and/or impulse of force exerted exceed a predetermined threshold value.