Tire pressure control device for an off-road vehicle

A tire pressure control device (1, 19) of an off-road vehicle having vehicle wheels with pneumatic tires, each of the vehicle wheels being associated with one vehicle axle of a plurality of vehicle axles, for changing tire pressures of the vehicle wheels (2a, 2b, 3a, 3b, 20a, 20b, 21a, 21b) of at least one vehicle axle (2, 3, 20, 21) of the vehicle during travel or during working use, the tire pressure control device comprising:

• a respective pressure-controlled wheel valve (4a, 4b, 5a, 5b, 22a, 22b, 23a, 23b) associated with a pneumatic tire for each of the vehicle wheels,
• the pressure-controlled wheel valves being pneumatically connected to a control pressure line (S1, S2, S3, S4) and to a supply pressure line (V1, V2), wherein the control pressure lines (S1, S2, S3, S4) and the supply pressure lines (V1, V2) are assigned valves (11, 12, 15, 16, 26, 27), configured to be pneumatically connected to a compressed air supply device (6) of the vehicle and to be controlled by an electronic control unit (10) to actuate the pressure-controlled wheel valves (4a, 4b, 5a, 5b, 22a, 22b, 23a, 23b) of one or more of the vehicle wheels (2a, 2b, 3a, 3b, 20a, 20b, 21a, 21b) and to control the tire pressures as needed,
• wherein each of the vehicle axles (2, 3, 20, 21) of the vehicle incorporated into the tire pressure control device (1, 19) is respectively assigned a control pressure line (S1, S2, S3, S4) respectively having a control valve (15, 16, 26, 27) for actuating the pressure-controlled wheel valves (4a, 4b, 5a, 5b, 22a, 22b, 23a, 23b) of the vehicle wheels (2a, 2b, 3a, 3b, 20a, 20b, 21a, 21b) of the vehicle takes place by axle via the control valves (15, 16, 26, 27), wherein the vehicle wheels are associated with either a left vehicle side or a right vehicle side and each of the left and right vehicle sides of the vehicle respectively is assigned a supply pressure line (V1, V2) respectively having at least one supply valve (11, 12) for connecting the compressed air supply device to the vehicle wheels (2a, 2b, 3a, 3b, 20a, 20b, 21a, 21b) of the vehicle by side via the supply valves (11, 12),
• wherein the tire pressure is controlled and adapted according to the travel or working operation of the vehicle.