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    • 4. 发明公开
    • SYSTEM FOR PREVENTING SEMITRAILER COLLISIONS WITH A LOADING RAMP
    • US20240132308A1
    • 2024-04-25
    • US17768718
    • 2020-10-01
    • JVJ-VALENTIN HOLDING APS
    • Jan Valentin
    • B65G69/00
    • B65G69/005
    • A system for preventing semitrailer collisions with a loading ramp (10) comprising: —a sensor unit (100) comprising a sensor and configured for sensing when the rear end of a semitrailer (12) is approaching a loading ramp (10); —a guide block (200) adapted to be positioned on the ground, laterally and/or medially to the opening of a loading ramp; —the guide block comprises a first wheel blocking means configured as a sled (210) adapted for supporting the tread of a rear tire of the semitrailer, and moves from a forwarded position relative to said loading ramp to a retracted position relative to the ramp when being pushed by the rear tire as the semitrailer is reversing towards the ramp; —the sensor unit is configured to send a blocking signal to said guide block (200) when the distance between said rear end of said semitrailer (12) and said loading ramp (10) is below a preset threshold, wherein said wheel blocking means locks its position in response to said blocking signal, thereby blocking the movement of said sled; —a rain flap (14) isolation device adapted for preventing said rear tire and its rain flap from touching each other while said rear tire is positioned within said sled during its movement from a forwarded position relative to said loading ramp to a retracted position relative to said loading ramp when being pushed by said rear tire as said semitrailer is reversing towards said loading ramp.