Wire rope hoist parts of the structure and its operation principle
CD1 type wire rope hoist and MD1 type electric wire rope hoist are currently two types of commonly used mechanical transmission, two types of electric hoist their common part, the overall structure is composed of three parts, one for the operating structure (no fixed) for electrical installations; three for the elevated structure.
First, the operating agencies
Together constitute the running of the electric car, run the motor running reducer, driven car agencies. Hanging host for reciprocating movement. Its operating speed is generally 20m/min, also chosen 30m/min. 1 ~ 5t lifting height ≥ 12m, an increase driven car.
Second, the electrical installations
CD1, MD1 electric hoist electrical installations electrical control box (0.25t no), button switch stopper and connecting wires.
Button switch the operating voltage is 380V or 36V according to direction and symbols shown on the button switch, the correct push button control box relay pull off, you can control the action of the gourd.
Third, the lifting structure
The hoisting structure comprises means is a main part of the machine to the lifting structure by the lifting motor via a coupling reducer hollow shaft drive rolls rotate so that the wire rope wound on the reel driven hook means rise or fall.
Lifting height of H = time 6m, with a jaw coupling join the motor shaft and reducer input shaft. H ≥ 9m the additional intermediate shaft rigid coupling. When H ≥ 18m, with a supporting frame of strengthening the rigidity of the intermediate shaft, to ensure smooth rotation.
① lifting motor
Lifting a motor larger starting torque the tapered rotor motor to adapt the product intermittent work started directly. CD1 type gourd with ZD single speed motor, MD1 gourd is equipped with the ZDS two-speed motor, ZDS motor constant speed and slow than 10:1.
② reducer
The 0.25t gourd reducer straight gear transmission structure, and the remainder the reducer are using triple reduction helical gear. Gear and shaft alloy structural steel or high-quality carbon steel processed and appropriate heat treatment to ensure its reliability and service life. Box, lid made of cast iron, shock absorption, reliable sealing.
The ③ roll device
Roll made of cast iron or seamless steel pipe manufacturing, spline transmission of power; roll shell with steel welding system.
Spool means is the central portion of the gourd, coupled via the balance beam and the operating mechanism at both ends respectively with from l reducer motor coupled, through the joint work of the wire rope and hook means, before the top of the nacelle is equipped with a stopper guide rod device.
The ④ hook device
Hook made of steel forging from and thrust ball bearings by hook beams and shell join the hook operate freely, 5t following hook device for single-pulley-type, 10t and above two-pulley-type.