High speed railway comprehensive grounding engineering cable trench excavator

The utility model discloses a high speed railway comprehensive grounding engineering cable trench excavator, which solves the problems that an existing comprehensive grounding engineering subgrade excavates cable trenches by artificial excavation or adopting a pneumatic spade, and wastes time and labor and affects construction efficiency. The high speed railway comprehensive grounding engineering cable trench excavator comprises a tractor head and a support which is connected with the tail portion of the tractor head, wherein a stretching rod which is hinged with the tractor head and the support is arranged between the tractor head and the front portion of the support, a wheel disc is arranged on the right of the support, alloy steel bits are uniformly distributed and fixed on an outer cylindrical surface of the wheel disc, a protective cover which is fixed on the support is arranged on the upper portion of the wheel disc, a balancing weight is arranged on the left of the support, directional wheels are arranged below the tail portion of the support, and a power output shaft of the tractor head is connected with a center shaft of the wheel disc in a drive mode. The high speed railway comprehensive grounding engineering cable trench excavator is reasonable and reliable in structural design, can complete excavation work of cable trenches by one person, saves a lot of manpower and material resources, saves cost, and has the advantages of simple structure, light handling, convenience and rapidness.