Abstract: An air brake electric control valve includes a valve body, a force balance unit including a guide member, and an electromagnetic urge unit including a movable column operable to move between an urging position and a retracted position. When the movable column is at the urging position, the movable column pushes the air guide member such that a through hole of the air guide member is blocked. When the movable column is at the retracted position, a gap is formed between the movable column and the air guide member such that an intermediate section and a second passage of the valve body are in fluid communication via the through hole of the air guide member and the gap.

Abstract: An air parking brake electric control valve includes an air valve unit and a self-lock unit. The air valve unit includes a main valve body, an auxiliary valve body, a valve core and a first electromagnetic assembly. The valve core is driven by the first electromagnetic assembly to move between a first action position and a second action position. The self-lock unit is disposed on the auxiliary valve body, and includes a second electromagnetic assembly. The second electromagnetic assembly includes a movable column operable to move between a release position and a lock position.

Abstract: An air brake electric control valve includes a valve body, a force balance unit including a guide member, and an electromagnetic urge unit including a movable column operable to move between an urging position and a retracted position. When the movable column is at the urging position, the movable column pushes the air guide member such that a through hole of the air guide member is blocked. When the movable column is at the retracted position, a gap is formed between the movable column and the air guide member such that an intermediate section and a second passage of the valve body are in fluid communication via the through hole of the air guide member and the gap.

Abstract: An air brake relay valve includes an air guide unit having a movable set, a drive unit having a motor and a worm shaft, and a cam unit having a transmission member and a driven member. During a brake action, the motor rotates the worm shaft to rotate the transmission member so as to push the driven member downward to thereby move the movable set to a communicating position where a first valve opening and a second valve opening fluidly communicate with each other. When the brake action is released, the motor rotates reversely so that the driven member is moved upward and that the movable set moves, without being applied with additional force, to a non-communicating position where the first and second valve openings do not fluidly communicate.

Abstract: An air brake relay valve includes an air guide unit having a movable set, a drive unit having a motor and a worm shaft, and a cam unit having a transmission member and a driven member. During a brake action, the motor rotates the worm shaft to rotate the transmission member so as to push the driven member downward to thereby move the movable set to a communicating position where a first valve opening and a second valve opening fluidly communicate with each other. When the brake action is released, the motor rotates reversely so that the driven member is moved upward and that the movable set moves, without being applied with additional force, to a non-communicating position where the first and second valve openings do not fluidly communicate.

Abstract: A torque detecting device is adapted to be mounted to a torque transmitting device. The torque transmitting device includes rotatable input and output shafts. The torque detecting device includes input and output gears for being sleeved respectively on the input and output shafts and a planet gear unit that includes a ring gear meshing with the input gear, a sun gear disposed in the ring gear, a carrier gear meshing with the output gear, and a plurality of planet gears. The planet gears are coupled rotatably to the carrier gear, are disposed between the sun and ring gears, and mesh with the ring and sun gears such that, when the input gear is rotated relative to the output gear by an angle, the sun gear is driven to rotate reversely by a larger angle.

Abstract: A torque detecting device is adapted to be mounted to a torque transmitting device. The torque transmitting device includes rotatable input and output shafts. The torque detecting device includes input and output gears for being sleeved respectively on the input and output shafts and a planet gear unit that includes a ring gear meshing with the input gear, a sun gear disposed in the ring gear, a carrier gear meshing with the output gear, and a plurality of planet gears. The planet gears are coupled rotatably to the carrier gear, are disposed between the sun and ring gears, and mesh with the ring and sun gears such that, when the input gear is rotated relative to the output gear by an angle, the sun gear is driven to rotate reversely by a larger angle.