Block piece, butt joint auxiliary device and butt joint system

The invention discloses a block piece, a butt joint auxiliary device and a butt joint system. The block piece comprises a block piece body and a buffering device, wherein the buffering device comprises a stretchable portion, the block piece body comprises a first face and a second face which are opposite to each other, and the block piece body is connected with the first end of the stretchable portion through the second face. According to the embodiment of the block piece, the buffering device is arranged in the block piece, so that the mechanism adjusting difficulty is reduced, the damage ofa distance sensor is avoided, and the identification precision of a butt joint port is improved. 本发明公开了一种挡片、对接辅助装置和对接系统。其中，挡片包括挡片本体和缓冲装置，所述缓冲装置包括伸缩部，所述挡片本体包括相对的第一面和第二面，所述挡片本体通过所述第二面与所述伸缩部的第一端连接。本发明实施例通过在挡片中设置缓冲装置，降低了机构调节难度，避免距离传感器损坏，提高了对接端口的识别精度。