Cable trench crossing device supporting large load

The utility model belongs to the field of electric power construction appliances, and particularly relates to a cable trench crossing device supporting a large load. The device comprises a supporting assembly and a crossing assembly. The supporting assembly is vertically arranged in the cable trench, and the supporting assembly is higher than the cable trench; and the crossing assembly is horizontally arranged above the supporting assembly and is connected with the supporting assembly to form a channel crossing the cable trench. The device is convenient to disassemble, assemble and transport, stress points at two ends of the crossing assembly are far away from the cable trench wall during use, and the inner wall of the cable trench is protected from being extruded and damaged; and the stress is effectively ensured to be concentrated on the supporting assembly when the middle part of the device is spanned, so that the safety of the large-load vehicle spanning the cable trench is improved. 本实用新型属于电力建设器具领域，具体涉及一