Motors: III phase squirrel cage. Motor used in ‘ELMECH’ hoist is conical type. It has class ‘B/F’ insulation specially designed for cranes and hoists duty with starting and stalling torque of approximately 220% and 290% respectively. The motors are of totally enclosed type and its class ‘B/F’ insulation have decidedly better advantage over class ‘A’ or ‘B’ type insulation.
Brake: in the hoist an automatic break is provided which applies instantaneously when the current supply is “switched off” either accidentally or intentionally. The motors of conical type axial movement of the rotor which is used to actual the brake. When the motor is started the rotor is pulled axially into the magnetic centre of the stator field and the conical brake on the rotor shaft is released. If the motor is disconnected or the power supply fails, the brake is applied. This safe and simple braking principal has proved to be very reliable all over the world and needs title maintenance. The brake torque is 100% above the motor torque at any rated load. Brake wear is easily corrected by adjusting the brake and cover location.
Main Hoisting: all parts of the hoist unit are enclosed in main housing thus forming integral unit. The main housing is all welded steel construction fitted with mounting brackets.
CONTROL: The hoist is controlled by magnetic contractors and low voltage push buttons. The control voltage is stepped down to 110 volts by means of step down transformer. The standard length of 3 meters of pendant cable is supplied with hoist. If required, additional length can be supplied at an extra price indicated in offer.
MICRO SPEED: Hoist units can be quipped with separate micro speed motor reducing lifting speed to 1/10 of normal lifting speed independent of the load.
TESTING: ELMECECH electric hoist is carefully inspected and tested with proof load of 125% of the safe working load on single fall before dispatch.
SALIENT FEATURES OF “ELMECH” HOIST:
- Modular construction and assembly facilities easy maintenance.
- All hardware is zinc coated to avoid resting service.
- Limit switches to present accidental over hoisting and over lowering are standard features.
- Provision for easy readjustment of limits for hoisting and limiting distances as and when required.
- Rope guide and rope tighter to keep the rope in proper position on rope drum.
- All shafts mounted on antifriction bearing.
- Conical construction of brake disk facilities very simple adjustment of brake which can be done from outside without removing any hoist part, hence the adjustment is fast.
Processing...
