Abstract: The present disclosure discloses a Doherty power amplifier, including at least one carrier power amplifier and at least one peak power amplifier connected in parallel, each carrier power amplifier includes at least one carrier power amplifier unit connected in parallel for power combination, and each peak power amplifier includes at least one peak power amplifier unit connected in parallel for power combination, each of the carrier power amplifier unit and the peak power amplifier unit includes two power amplifier circuits connected in parallel for power combination, and each of the two power amplifier circuits includes a medium-low power amplifier transistor having saturation power less than or equal to a preset threshold. The present disclosure further discloses a power amplification method.

Abstract: Embodiments of the present disclosure disclose a drive for an electric clutch if a winch. The drive comprises a pusher block having a first end, a second end, and a transmission component arranged on a central portion of the pusher block to drive a transmission shaft; a first driving unit connected to the first end to drive the first end to reciprocate between a first position and a second position; and a second driving unit connected to the second end to drive the second end to reciprocate between a third position and a fourth position. The drive enables switching of the transmission shaft between a high speed mode, a low speed mode, and an idle mode. A winch including the drive is also disclosed.

Abstract: The present disclosure discloses an electric winch which comprises a motor having a motor housing, a first terminal, a second terminal and a third terminal, and an insulating cover plate having a mounting hole, a first inner bore column and a second inner bore column. A first through hole, a second through hole and a third through hole are provided on an outer edge of the motor housing. The embodiment allows pre-mounting of the terminals on the insulating cover plate before they are fixed to the motor housing and provides higher efficiency in the assembly process.

Abstract: The present disclosure discloses a winch for a vehicle including a base, a winding drum fixed on the base for winding a traction rope, a support fixed on the base, a transmission component, and a reciprocating component for driving the traction rope to reciprocate along an axial direction of the winding drum when the traction rope is wound onto or released from the winding drum. The disclosed winch enables an orderly arrangement of the traction rope when the traction rope is wound on or released from the winding drum.

Abstract: The present disclosure discloses an automatic clutch winch comprising a motor, a gear reduction unit actuated by the motor, and a winding drum drivably coupled with the gear reduction unit. The gear reduction unit comprises a planetary gear assembly drivably coupled with the winding drum, a movable ring gear engaging with the planetary gear assembly, a DC gear motor, a cam driven by the DC gear motor to rotate, and a pull rod driven by the cam. The pull rod is driven by the cam on a first end to enter or exit a notch of a plurality of notches in the movable ring gear. The disclosed automatic clutch winch can provide protection for the internal components during an emergent situation.

Abstract: The present disclosure discloses a double-speed electric winch and an operating method of the winch. The winch comprises two groups of planetary gears with different transmission ratios in a gearbox. The two groups of planetary gears have corresponding outer ring gears. The gearbox has a rotatable handle which has a locking head inserted in the gearbox. As the handle rotates, the locking head engages with the outer ring gears in different manners to provide a first rotating speed mode, a second rotating speed mode, and a disengaged mode.

Abstract: Embodiments of the present disclosure disclose a drive for an electric clutch if a winch. The drive comprises a pusher block having a first end, a second end, and a transmission component arranged on a central portion of the pusher block to drive a transmission shaft; a first driving unit connected to the first end to drive the first end to reciprocate between a first position and a second position; and a second driving unit connected to the second end to drive the second end to reciprocate between a third position and a fourth position. The drive enables switching of the transmission shaft between a high speed mode, a low speed mode, and an idle mode. A winch including the drive is also disclosed.

Abstract: The present disclosure discloses an electric winch which comprises a motor having a motor housing, a first terminal, a second terminal and a third terminal, and an insulating cover plate having a mounting hole, a first inner bore column and a second inner bore column. A first through hole, a second through hole and a third through hole are provided on an outer edge of the motor housing. The embodiment allows pre-mounting of the terminals on the insulating cover plate before they are fixed to the motor housing and provides higher efficiency in the assembly process.

Abstract: The present disclosure discloses a winch for a vehicle including a base, a winding drum fixed on the base for winding a traction rope, a support fixed on the base, a transmission component, and a reciprocating component for driving the traction rope to reciprocate along an axial direction of the winding drum when the traction rope is wound onto or released from the winding drum. The disclosed winch enables an orderly arrangement of the traction rope when the traction rope is wound on or released from the winding drum.

Abstract: The present disclosure discloses an automatic clutch winch comprising a motor, a gear reduction unit actuated by the motor, and a winding drum drivably coupled with the gear reduction unit. The gear reduction unit comprises a planetary gear assembly drivably coupled with the winding drum, a movable ring gear engaging with the planetary gear assembly, a DC gear motor, a cam driven by the DC gear motor to rotate, and a pull rod driven by the cam. The pull rod is driven by the cam on a first end to enter or exit a notch of a plurality of notches in the movable ring gear. The disclosed automatic clutch winch can provide protection for the internal components during an emergent situation.

Abstract: The present disclosure discloses a winch for vehicles comprising a motor, a motor casing covering at least a part of the motor, a driving shaft drivably connected to the motor, a gear reduction drivably connected to the driving shaft, a first support frame detachably connected to the motor casing, a second support frame detachably connected to the gear reduction unit, and a winding drum arranged between the first support frame and the second support frame. The first support frame comprises a plurality of gripping components which extend from the first support frame to the motor casing and surround an outer surface of the motor casing. The winch as disclosed facilitates mounting and dismounting, and provides improved waterproofness.

Abstract: The present disclosure discloses a winch comprising a motor having a rotator, a brush holder assembly electrically coupled to the rotator, and a coil assembly surrounding the rotator, a motor casing covering at least a part of the motor which comprises a plurality of conducting columns electrically coupled to the coil assembly and the brush holder assembly, a driving shaft drivably connected to the motor, a gear reduction unit drivably connected to the driving shaft, a first support frame detachably connected to the motor casing, a second support frame detachably connected to the gear reduction unit, and a winding drum located between the first support frame and the second support frame. The winch as disclosed facilitates mounting and dismounting, and provides improved waterproofness.

Abstract: The present disclosure discloses a winch comprising a transmission shaft disposed in a longitudinal direction, a motor in drivable connection with the transmission shaft, a three-stage center wheel rotatably mounted on the transmission shaft, an upper planetary wheel frame mounted on the three-stage center wheel, a lower planetary wheel right frame mounted on the outer side of the three-stage center wheel, a convex extending from an end of the upper planetary wheel frame, a connecting ring mounted on the three-stage center wheel which is longitudinally movable relative to the convex, and a position control mechanism to control longitudinal movement of the transmission shaft, wherein the three-stage center wheel is in contact with one end of the connecting ring, and a spring is disposed between the other end of the connecting ring and the upper planetary wheel frame.

Abstract: The present disclosure discloses a winch comprising a motor having a rotator, a brush holder assembly electrically coupled to the rotator, and a coil assembly surrounding the rotator, a motor casing covering at least a part of the motor which comprises a plurality of conducting columns electrically coupled to the coil assembly and the brush holder assembly, a driving shaft drivably connected to the motor, a gear reduction unit drivably connected to the driving shaft, a first support frame detachably connected to the motor casing, a second support frame detachably connected to the gear reduction unit, and a winding drum located between the first support frame and the second support frame. The winch as disclosed facilitates mounting and dismounting, and provides improved waterproofness.

Abstract: The present disclosure discloses a winch for vehicles comprising a motor, a motor casing covering at least a part of the motor, a driving shaft drivably connected to the motor, a gear reduction drivably connected to the driving shaft, a first support frame detachably connected to the motor casing, a second support frame detachably connected to the gear reduction unit, and a winding drum arranged between the first support frame and the second support frame. The first support frame comprises a plurality of gripping components which extend from the first support frame to the motor casing and surround an outer surface of the motor casing. The winch as disclosed facilitates mounting and dismounting, and provides improved waterproofness.

Abstract: The present disclosure discloses a winch comprising a transmission shaft disposed in a longitudinal direction, a motor in drivable connection with the transmission shaft, a three-stage center wheel rotatably mounted on the transmission shaft, an upper planetary wheel frame mounted on the three-stage center wheel, a lower planetary wheel right frame mounted on the outer side of the three-stage center wheel, a convex extending from an end of the upper planetary wheel frame, a connecting ring mounted on the three-stage center wheel which is longitudinally movable relative to the convex, and a position control mechanism to control longitudinal movement of the transmission shaft, wherein the three-stage center wheel is in contact with one end of the connecting ring, and a spring is disposed between the other end of the connecting ring and the upper planetary wheel frame.