Novel excavation trolley for hydraulic tunnel

The utility model discloses a novel excavation trolley for a hydraulic tunnel, which relates to the field of tunnel construction equipment, and comprises an excavation trolley, a protection component is arranged at the bottom of the excavation trolley, wheels are connected to the bottom of the excavation trolley, a shell is sleeved outside the wheels, a fixing rod is arranged outside the shell, and the fixing rod is connected with the excavation trolley. According to the device, the protective assemblies are arranged around the wheels to protect the wheels from being interfered by sundries when the wheels move on the guide rails, and meanwhile, the protective mechanisms can also clean large and small stones on the guide rails, so that the service life of the guide rails is prolonged, and the service life of the guide rails is prolonged. When the excavation trolley needs to be used and the cleaning rod abuts against the surface of the rail, the clamping block is driven to be inserted into the clamping hole of