Electromechanical-linkage hydraulic control gate valve actuator

An electromechanical-linkage hydraulic control gate valve actuator, comprising an explosion-proof motor, a hydraulic control gate valve and an actuator rack;

• wherein the electromechanical-linkage hydraulic control gate valve actuator further comprises a hand-operated speed-increasing gearbox assembly (4);
• a sun gear (17) of the hand-operated speed-increasing gearbox assembly (4) is connected with the explosion-proof motor (2) through a shaft;
• the electromechanical-linkage hydraulic control gate valve actuator further comprises a bidirectional throttle valve (5) installed in a lower part of the actuator rack (3);
• and one end of the bidirectional throttle valve (5) is communicated with a hydraulic oil cylinder, and the other end is communicated with a hydraulic control check valve;
• in the hand-operated speed-increasing gearbox assembly (4), the sun gear (17) is disposed on a central line at one end of a planet carrier body (10) and is connected with the shaft of the explosion-proof motor (2);
• a central line at the other end of the planet carrier body (10) is connected with a handle through a bearing (9);
• and planetary gears (11) are symmetrically disposed on both sides of the planet carrier body (10), and are engaged with an internal gear (18) fixed to a hand-operated speed-increasing gearbox shell (6) through two planetary gear shafts (12);
• the planetary gears (11) revolve around the central line of the internal gear (18), and rotate around the planetary gear shafts (12);
• the two planetary gears (11), the sun gear (17), the two planetary gear shafts (12) and the internal gear (18) respectively have tooth numbers of 29, 10, 8 and 48, and have moduli of 2;
• the hand-operated speed-increasing gearbox assembly (4) has a speed-increasing ratio of 18.5;
• and
• opening and closing speeds of the hydraulic control gate valve are regulated and controlled through the bidirectional throttle valve (5).