Brake control device

A brake control device comprising:

• a relay valve that generates a first drive pressure for driving a brake, from an air pressure generated by a first air supply source, based on an pilot pressure applied;
• a double check valve that connects the relay valve and a second air supply source that generates a second drive pressure separate to the first air supply source, and that communicates the drive pressure which is generated in either the relay valve or the second air supply source, with the brake;
• a variable load valve that outputs a first pressure according to a pressure of an air spring fitted on a vehicle side;
• a first solenoid valve group which generates the pilot pressure from the air pressure during service operation;
• and
• a second solenoid valve group which outputs, as the pilot pressure, a second pressure according to the first pressure output from the variable load valve during emergency operation, wherein
• the relay valve, the double check valve, the first solenoid valve group, and the second solenoid valve group are integrally configured as a main unit,
• and the variable load valve is fitted to an outside face of the main unit which is accessible from the outside, so as to be removable from the outside.