Low-clearance chain-type electric hoists address the bulky and cumbersome nature of wire-rope electric hoists. Comprising an electric motor, a transmission mechanism, and sprockets, these hoists replace the wire rope with a chain. Their rated capacities typically range from 0.5 to 60 metric tons, with lifting heights from 3 to 120 meters.

The low-clearance chain-type electric hoist retains the lightweight and convenient handling characteristics of manual chain hoists while addressing their shortcomings, such as manual operation and limited lifting speed. The DHY series chain electric hoist integrates the advantages of both manual and electric hoists, incorporating a disc brake and a power-driven reducer to achieve a compact structure, small footprint, light weight, high efficiency, and ease of use.

Tonnages for low-clearance electric chain hoists: 240 kg, 300 kg, 0.5 t, 1 t, 2 t, 3 t, 5 t, 10 t, 20 t, 25 t, 30 t, and 35 t.

The speed settings for low-headroom electric chain hoists are: second gear, first gear, variable-speed start, and second-gear variable-speed start. Currently, domestic technology is fully capable of meeting the manufacturing requirements for second-gear electric hoists.

Brakes for low-clearance electric chain hoists: side brake, conical single brake, and dual brake (side brake plus machine brake).

Classified by lifting method: for use with Zhenxian and Yizhan stage hoisting.

Features: advanced performance and design, compact size, lightweight, stable operation, and user-friendly handling. Chain-drive hoists have a wide range of applications and are highly convenient for lifting and lowering heavy loads, maintaining equipment, and handling goods. They can also be installed on overhead beams, curved tracks, slewing jib lift rails, and fixed lifting points.

The power supply for electric hoists ranges from 110 V to 690 V (currently achievable in China), with 380 V being the standard.

The control switch voltage for electric hoists is 24 V or 36 V. (If the control switch is not equipped with a built-in transformer to step down the voltage to the safe level of 36 V, it could pose a risk of injury to personnel; therefore, the control voltage for most chain-type electric hoists is 24 V or 36 V.)

The standard configuration shall include limit switches and phase-loss protection devices.

Installation Method

First, the chain case must be installed.

2. Connect the power cord

When connecting the power cord, be sure to disconnect the power supply first. In addition, the grounding wire must be properly grounded. Otherwise, if the operator touches any part of the hoist or the chain, they may experience an electric shock.

3. Lubricate the load chain of the electric chain hoist.

The degree of lubrication of a chain is a critical factor affecting the service life of load chains. Only timely and effective lubrication can ensure the chain’s optimal service life.

4. Inspect the chain alignment

For chain hoists with multi-strand chains, it is necessary to prevent the bottom hook from overturning. If overturning occurs, return the hook to its normal position and inspect the weld grooves on the chain to ensure they are aligned in a straight line. Do not apply a load to a hoist with a twisted chain. Then check the operating voltage.

The equipment is shipped with a voltage specified by the user (e.g., 230/460 V) or a higher voltage (limited to dual-voltage models); therefore, the cables must be inspected to ensure they meet the supply voltage requirements.