Vehicle gap adjustable conical brake device

The invention relates to a vehicle gap adjustable conical brake device. The vehicle gap adjustable conical brake device comprises a barrel. The barrel is provided with a first end port and a second end port. A parking end cover is arranged in the first end port. A running end cover is arranged in the second end port. The parking end cover, the running end cover and the barrel define a cavity. A parking piston and a running piston are arranged in the cavity. One end of the parking piston can abut against the parking end cover, and the other end of the parking piston can abut against the running piston. The running piston can abut against the running end cover. A set of spring positioning grooves extending axially are evenly distributed in the parking piston. Parking springs are arranged in the spring positioning grooves and tightly abut against the parking end cover. The running piston is hollow, and a transmission shaft which is in sliding fit with the running piston is arranged in the hollow interior of the running piston. The vehicle gap adjustable conical brake device has the advantages that large brake torque can be achieved in a small mounting space, the brake effect is better, by adopting the nesting integral design of running and parking brakes, a parking brake does not need to be arranged independently, a vehicle frame space is saved, and great convenience is provided for overall vehicle arrangement.