Shuttle valve, directional control valve module, and pneumatic or hydraulic assembly

A directional control valve module, comprising:

• two directional valves which are redundant relative to one another;
• a shuttle valve configured for selecting a maximum pressure in two control pressure lines that are separate from one another and are a first control pressure line and a second control pressure line, the shuttle valve including:
• a first inlet pressure port;
• a second inlet pressure port, the first inlet pressure port and the second inlet pressure port being configured for a first control pressure;
• a third inlet pressure port;
• a fourth inlet pressure port, the third inlet pressure port and the fourth inlet pressure port being configured for a second control pressure;
• a first outlet pressure port configured for connecting the first control pressure line;
• a second outlet pressure port configured for connecting the second control pressure line;
• a first valve body in a fluid-conducting connection between the first inlet pressure port and the second inlet pressure port on the one hand and the first outlet pressure port on the other hand, the first valve body including a first valve body first side and a first valve body second side situated opposite the first valve body first side, the first valve body further including a first control-pressure-charged surface and a second control-pressure-charged surface;
• and
• a second valve body between the third inlet pressure port and the fourth inlet pressure port on the one hand and the second outlet pressure port on the other hand, the second valve body including a second valve body first side and a second valve body second side situated opposite the second valve body first side, the second valve body further including a third control-pressure-charged surface and a fourth control-pressure-charged surface, the first control-pressure-charged surface and the second control-pressure-charged surface in each case being larger than the third control-pressure-charged surface and the fourth control-pressure-charged surface, the first valve body and the second valve body being positively coupled and thereby being configured for being displaced together,
• wherein the shuttle valve is configured such that:
• the first control pressure from the first inlet pressure port is applied to the first valve body first side;
• the first control pressure from the second inlet pressure port is applied to the first valve body second side;
• the second control pressure from the third inlet pressure port is applied to the second valve body first side;
• the second control pressure from the fourth inlet pressure port is applied to the second valve body second side;
• the first control pressure respectively acts on the first control-pressure-charged surface and the second control-pressure-charged surface;
• and
• the second control pressure respectively acts on the third control-pressure-charged surface and the fourth control-pressure-charged surface,
• wherein the two directional valves are respectively configured for providing the first control pressure and the second control pressure and are connected respectively to two of the first inlet pressure port, the second inlet pressure port, the third inlet pressure port, and the fourth inlet pressure port of the shuttle valve in a control pressure-conducting manner.

An assembly which is a pneumatic assembly or a hydraulic assembly, the assembly comprising:

• a double-acting cylinder, which includes a piston chamber and a piston which is configured for displacing in the piston chamber, the piston including a piston first side and a piston second side opposite the piston first side;
• and
• a directional control valve module, including:
• two directional valves which are redundant relative to one another;
• a shuttle valve configured for selecting a maximum pressure in two control pressure lines that are separate from one another and are a first control pressure line and a second control pressure line, the shuttle valve including:
• a first inlet pressure port;
• a second inlet pressure port, the first inlet pressure port and the second inlet pressure port being configured for a first control pressure;
• a third inlet pressure port;
• a fourth inlet pressure port, the third inlet pressure port and the fourth inlet pressure port being configured for a second control pressure;
• a first outlet pressure port configured for connecting the first control pressure line;
• a second outlet pressure port configured for connecting the second control pressure line;
• a first valve body in a fluid-conducting connection between the first inlet pressure port and the second inlet pressure port on the one hand and the first outlet pressure port on the other hand, the first valve body including a first valve body first side and a first valve body second side situated opposite the first valve body first side, the first valve body further including a first control-pressure-charged surface and a second control-pressure-charged surface;
• and
• a second valve body between the third inlet pressure port and the fourth inlet pressure port on the one hand and the second outlet pressure port on the other hand, the second valve body including a second valve body first side and a second valve body second side situated opposite the second valve body first side, the second valve body further including a third control-pressure-charged surface and a fourth control-pressure-charged surface, the first control-pressure-charged surface and the second control-pressure-charged surface in each case being larger than the third control-pressure-charged surface and the fourth control-pressure-charged surface, the first valve body and the second valve body being positively coupled and thereby being configured for being displaced together,
• wherein the shuttle valve is configured such that:
• the first control pressure from the first inlet pressure port is applied to the first valve body first side;
• the first control pressure from the second inlet pressure port is applied to the first valve body second side;
• the second control pressure from the third inlet pressure port is applied to the second valve body first side;
• the second control pressure from the fourth inlet pressure port is applied to the second valve body second side;
• the first control pressure respectively acts on the first control-pressure-charged surface and the second control-pressure-charged surface;
• and
• the second control pressure respectively acts on the third control-pressure-charged surface and the fourth control-pressure-charged surface,
• wherein the two directional valves are respectively configured for providing the first control pressure and the second control pressure and are connected respectively to two of the first inlet pressure port, the second inlet pressure port, the third inlet pressure port, and the fourth inlet pressure port of the shuttle valve in a control pressure-conducting manner,
• wherein the first outlet pressure port is connected on the piston first side to the piston chamber in a pressure-conducting manner;
• wherein the second outlet pressure port is connected on the piston second side to the piston chamber in a pressure-conducting manner.