The internal principle and structure of a pneumatic winch are described below:

Principle

A pneumatic winch operates based on the conversion of pneumatic (compressed air) power into mechanical power. The energy of compressed air drives the winch to perform lifting and pulling tasks. The amount of pull or load applied to the cable is determined by the air pressure supplied to the air motor and the radius of the drive wheel connected to it. The winch can apply a constant and non-jerking pull to the cable, making it suitable for handling heavy loads without damaging sensitive cables, such as fiber optics cables.

Structure

The main components of a pneumatic winch include a drum, a rotary-action pneumatic motor, a reduction gear, a clutch connecting the reduction gear with the drum, and a double-acting pneumatic cylinder. Here's a detailed breakdown of these components:

Drum: The drum is the central component where the cable or rope is wound. It rotates to lift or pull the load.

Rotary-action Pneumatic Motor: The pneumatic motor converts the energy of compressed air into mechanical energy, driving the rotation of the drum.

Reduction Gear: The reduction gear reduces the speed of the pneumatic motor to increase torque, making it suitable for lifting and pulling heavy loads. Some models may be equipped with self-braking worm gearing to increase reliability.

Clutch: The clutch connects the reduction gear with the drum, allowing for smooth engagement and disengagement of the drive system. It may include a ratchet wheel mounted on the drum and a pawl installed on the movement transformation mechanism.

Double-acting Pneumatic Cylinder: The pneumatic cylinder provides the power for the clutch to engage and disengage. It has two chambers, the rod space and the piston space, which communicate with the input of the pneumatic motor through corresponding main lines and valves. The translationally moving member of the pneumatic cylinder is connected with the drum by means of a movement transformation mechanism and an overrunning clutch.

In addition, the longitudinal axes of the pneumatic cylinder and the drum are intersecting straight lines, and the movement transformation mechanism is often made in a lever-type design.

Operational Mechanism

When the pneumatic winch is operated, compressed air is supplied to the pneumatic motor, driving its rotation. The rotation of the motor is then transmitted to the reduction gear, which reduces the speed and increases the torque. The clutch engages the reduction gear with the drum, allowing the drum to rotate and wind or unwind the cable. The double-acting pneumatic cylinder provides the necessary force for the clutch to engage and disengage smoothly.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment