1. Electric motor for the lifting mechanism. The lifting mechanism is actuated by an asynchronous electric motor with a conical rotor and a built-in conical brake, which is activated by the action of a spiral spring under pressure. The brake is disengaged when the axial rotor is moved at the moment of starting the electric motor, while the force of the compressed spring is overcome. This design solution guarantees reliable shutdown in the event of a rotor power failure, and there is no need for a special electromagnetic brake. When using two-speed electric motors, basic and micro lifting speeds are used. 2. Planetary gearbox. The planetary gearbox is designed to reduce the motor speed to acceptable values for the drum. Thanks to the external mounting on the drum, it is easy to connect to the electric motor housing and easy to maintain. Gear wheels (gears) of the clutch in the gearbox are made of high-quality steel, properly hardened. They are installed on ball bearings, work in an oil bath. 3. Coupling. The transmission of torque from the electric motor to the axis of the gearbox is carried out through a longitudinal elastic coupling that compensates (balances), which ensures the axial movement of the rotor with minimal resistance. The use of metal components guarantees continuous transmission of the torque. 4. Drum. A hollow shaft coming from the gearbox drives the drum centrally through a spiral spline coupling. The hollow shaft and two-stage gear of the reducer rotates on roller bearings, which support the drum by means of a splined connection of the reducer. The other end carries a drum that rests on the casing of the electric motor. The special internal groove for fastening the end of the rope to the drum is made with a special profile that meets the requirements of the standards. 5. Rope layer. The rope layer consists of two basic elements - a guide nut and a clamping spring, which ensure the accuracy of winding the rope along the spiral groove of the drum. 6. Body. The body is a complex part, and at the same time the supporting part of the lifting mechanism, is an all-welded construction consisting of two steel flanges, attached to profiled longitudinal rail tracks. The adopted geometric shape of the case ensures the convenience of installation of the electric hoist in various positions, while there are several possible options for the output of the cargo rope. 7. Hook suspension. The design of the hook suspension with various polyspasts guarantees the reliability of the transmission of the load force through the hook and the parts that are carried to the branches of the cargo rope. The shell of the roller block protects the rollers quite reliably, at the same time, the cover has high strength when acting on rigidly fixed elements. The diameter of the rope, the rope blocks (pulley) and the load capacity of the hook are selected in accordance with current regulations. 8. Control panel. The control panel is a separate component consisting of an electrical panel and a control panel key (a switch in the control circuit). The control panel has the following elements: a starter for controlling lifting and moving mechanisms, a load limiter relay, etc. Work with the remote control is carried out through the hanging control switch. The voltage used during operation is safe and is 24V, which is achieved by means of a step-down transformer, and the winding of this transformer has no electrical connection. 9. Movement mechanism. Attached to the lifting mechanism, the mechanism for horizontal movement of the load can be electrically or manually moved. Electric movement is possible thanks to an asynchronous electric motor with a built-in brake. Depending on the needs of operation, various models of movement mechanisms have been developed: for movement on one or two rail ways. In the monorail system - the suspension of the lifting mechanism can be for normal building height (attached under the rail track) or for reduced building height (attached to the side of the rail track). The design of the movement mechanism allows operation on monorail roads made of standard profiles with a width of 90 to 300 mm. |