How to Install an Electric Hoist

The electric hoist can be used in conjunction with gantry cranes and I-beam tracks. Particularly in some factory buildings, installing I-beam tracks allows the electric hoist to move left and right, enhancing its usability and characteristics. How should an electric hoist be installed on I-beam tracks, and what should be noted during installation?

Installation Method: The fixed strength of the running track for newly installed electric hoists directly affects the overall safety of the machine. The installation can be done by drilling holes in the H-beam and securing the fixed electric hoist onto the H-beam track with bolts. This drilling method is suitable for fixed A1 and A2 models. The A1 model is mounted underneath the H-beam, which is a suspended installation. The A2 model is mounted on top of the external H-beam, a seated installation requiring space on the H-beam. There are also fixed electric hoists without trolley holes that can be installed with through-bolts; they can also be suspended using钢丝绳 and shackles. Fixed electric hoists can also be installed using this method, where the hook is fixed on the hoist. The choice of H-beam model and required length depend on the specifications of the electric hoist. Opt for H-beams with thicker steel plates. The size of the holes and the spacing can be determined based on the electric hoist specifications and installation method.

Lifting Hoist Speed Control Methods

1. The resistor speed control of the motor rotor has the advantage of a simple structure and low cost, with average quality. However, its drawback is that the speed variation is significant and unstable.

2. By adjusting speed through hydraulic push rods, a relatively stable speed can be achieved; however, the speed is low, the intermediate speed is soft, and partial modifications to the mechanical components of the electric hoist are necessary during operation.

3. The method of speed regulation through dynamic braking features adjustable speed gears and high energy efficiency, as well as safety and reliability in use. The drawback is the inability to accurately control low speeds.

4. Varying speed through a variable frequency inverter is an ideal method for speed regulation, allowing for stepless speed adjustment. It also boasts high control accuracy, remote operation capabilities, and ease of use and maintenance. However, it's important to note that electric hoists equipped with a conical motor are generally not suitable for variable frequency inverters, as all inverters require an acceleration time upon startup. During acceleration, the voltage rises gradually, which cannot instantly disengage the conical rotor to release the brake, leading to the risk of overloading the inverter's protection mechanism.