The present disclosure is directed to a winch assembly that includes a power drive with a motor component. The motor component of the power drive rotates a member within the winch assembly and the rotation of that member is translated to a rotation component (e.g., a spool, a drum, etc.) of the winch assembly to wind up a line, a cord, a rope, a chain, or some other type of line that can be wound up by the winch assembly. The power drive further includes a casing that surrounds and encases the motor component. In some embodiments, the casing of the power drive may be fully encased within the rotation component of the winch assembly. In some embodiments, the casing of the power drive may be partially inset the rotation component. In some embodiments, the casing of the power drive may be external to the rotation component. The motor component is an electric motor that an operator or user can select parameters desired for operation of the winch assembly depending on the situation of use for the winch assembly.

The winch comprises a power mechanism motor or a hydraulic motor, a transmission, a winding drum, a brake, a machine frame and a sensor, wherein the transmission, the winding drum, the brake, the machine frame and the sensor are arranged in the winding drum, a housing with a tapered inner diameter of the transmission is fixed on the left side machine frame, and a driving shaft penetrates through a central hole of a central sun gear of each planetary gear, a clutch gear shifter is arranged between each planetary gear stage, the last planetary gear stage and the winding drum, the clutch gear shifter is connected with a power input side planetary gear rack and a power output side central sun gear during neutral gear, the driving unit drives the execution unit tubular member to move to the right side, the clutch is disconnected from the connection with the left planetary gear, and the right driving shaft power output gear is combined with the central sun gear to complete gear shifting, the empty hook or light-load power mechanism directly drives the winding drum to rotate through the driving shaft; the speed changer of the synchronizer provided by the invention can be used for electric automobiles and the like.

A winch capable of externally connecting motor is to selectively assemble and increase an externally connected motor (a third motor) on a winch driven by a set of motors so that a driving device disposed inside a driving device box of the winch is driven by dynamic power supplied from three motor at the same time to provide greater pulling force and faster pulling rate for a rope wheel of the winch, thereby providing wider scope of application. Moreover, the externally connected motor (the third motor) can be disassembled when there is no need such that dynamic power is provided by two motors so as to save power and energy resource.

A cable puller is provided to pull rope or cable where the cable puller includes a puller frame, a capstan rotatably mounted on the puller frame around a first axis of rotation, an output shaft rotatably mounted to the puller frame and coupled to the capstan, The capstan is configured to rotate when the output shaft is driven. A shift motor is configured to drive a cam to engage gearing coupled to the output shaft to a gear position comprising a low speed position, a medium speed position, and a high-speed position.

A winch or a hoist (100) includes an input shaft, a rotatable dmm (112), and a gearbox (120) including a plurality of high-contact ratio spur-type gears, the gearbox coupled to the input shaft and to the rotatable dmm such that rotation of the input shaft at a first speed drives rotation of the rotatable drum at a second speed that is different than the first speed.

A winch or a hoist (100) includes an input shaft, a rotatable dmm (112), and a gearbox (120) including a plurality of high-contact ratio spur-type gears, the gearbox coupled to the input shaft and to the rotatable dmm such that rotation of the input shaft at a first speed drives rotation of the rotatable drum at a second speed that is different than the first speed.

A steel wire self-locking mechanism and a lifting device are provided. The steel wire self-locking mechanism includes a surrounding plate and a self-locking gear and a locking device arranged in the surrounding plate, and uses a friction force of a threaded sleeve to lock the lifting device. The lifting device includes a lifting assembly and a beam assembly. The steel wire self-locking mechanism is arranged in the beam assembly, and the locking of the lifting device is realized by the steel wire self-locking mechanism. The steel wire self-locking mechanism and the lifting device have good adaptability. Due to a smaller volume, the steel wire self-locking mechanism is applicable to lifting tables in various sizes.

A steel wire self-locking mechanism and a lifting device are provided. The steel wire self-locking mechanism includes a surrounding plate and a self-locking gear and a locking device arranged in the surrounding plate, and uses a friction force of a threaded sleeve to lock the lifting device. The lifting device includes a lifting assembly and a beam assembly. The steel wire self-locking mechanism is arranged in the beam assembly, and the locking of the lifting device is realized by the steel wire self-locking mechanism. The steel wire self-locking mechanism and the lifting device have good adaptability. Due to a smaller volume, the steel wire self-locking mechanism is applicable to lifting tables in various sizes.

A winch includes a coupling A, a coupling B, a rectangular spring, a gear wheel, a gear rack, a friction ring, and a transmission shaft, etc. By increasing the distance between the adjacent internal teeth of the two-stage planet carrier, it ensures that the three-stage sun gear can be smoothly inserted into the two-stage planet carrier even if the elasticity of spring A is reduced, such that the engagement width between the three-stage sun gear and the two-stage planet carrier can reach the normal requirements. With the design of sliding gear ring and spring C, it can greatly reduce the phenomenon of mis-engagement when the external teeth of the three-stage sun gear enter the internal teeth spacing of the two-stage planet carrier, protect the teeth integrity of the three-stage sun gear and the two-stage planet carrier.

A winch includes a coupling A, a coupling B, a rectangular spring, a gear wheel, a gear rack, a friction ring, and a transmission shaft, etc. By increasing the distance between the adjacent internal teeth of the two-stage planet carrier, it ensures that the three-stage sun gear can be smoothly inserted into the two-stage planet carrier even if the elasticity of spring A is reduced, such that the engagement width between the three-stage sun gear and the two-stage planet carrier can reach the normal requirements. With the design of sliding gear ring and spring C, it can greatly reduce the phenomenon of mis-engagement when the external teeth of the three-stage sun gear enter the internal teeth spacing of the two-stage planet carrier, protect the teeth integrity of the three-stage sun gear and the two-stage planet carrier.