When selecting a man lift for working at heights, it’s essential to understand its structure and operating principle. In this article, we will introduce what a man lift is, its components, and how it operates, enabling you to find the most suitable lifting solution for your high-altitude tasks.
What is a Man Lift?
At its core, a man lift is a mechanical device designed and assembled to safely elevate personnel for work at heights. The structure of a man lift typically includes a motor, a lift basket, a lifting arm, and wheeled mobility. This equipment allows workers to move flexibly and access various work positions efficiently.
The lift basket is designed with impact resistance and anti-fall features, enhancing safety on the job. This convenience significantly reduces construction time and costs.
Since the introduction of man lifts, many workplace accidents associated with high-altitude tasks have been minimized. Previously, using scaffolding posed numerous challenges in construction. Therefore, man lifts serve as an effective alternative to traditional scaffolding methods.
The term “AWP” stands for Aerial Working Platform, and it is commonly referred to as a “Man Lift.” In recent years, man lifts have become increasingly popular throughout Vietnam, being utilized extensively in both small and large projects.
When applying man lifts, investors and contractors see significant benefits: time savings, cost efficiency, and reduced risk of workplace accidents.
Moreover, man lifts are designed with working heights ranging from 6m to 58m, catering to diverse needs.
Structure and Operating Principle of Man Lifts
Let’s delve deeper into the structure and operating principles of man lifts designed for elevated work. The market offers a variety of man lifts produced by different manufacturers in various styles. Each type has its unique construction and operating principle, but their common goal is to safely elevate personnel.
Manufacturers produce different types of man lifts to meet a wide range of usage needs. For example, scissor lifts operate by raising vertically (in an “X” shape), while articulated boom lifts in a “Z” configuration allow access to more intricate positions. Straight boom lifts in an “S” shape enable greater horizontal reach.
Below are the detailed structures and operating principles of each type of man lift.
Structure and Operating Principle of the X-Type Lift
The X-type lift is divided into three main components: the lower body housing the operational motor and counterweights, the lift frame, and the work platform.
- Expanded Work Platform
- Document Tray
- Upper Control Box
- Safety Harness Attachment Point
- Guard Rails
- Locking Point for Expanded Work Platform
- Work Platform
- Work Platform Door
- Lifts
- Lifting Cylinders
- Lower Control Box
- Platform Access Ladder
- Brake Release Pump
- Rear Wheels
- Battery Charger
- Stabilizing Legs
- Front Wheels (Steering Wheels)
- Lift Cushion
In the lower part of the electric scissor lift, there are typically four 6V batteries installed on both sides of the lift, along with a drive motor, a microprocessor unit, a stabilizing leg system, and a battery charger.
Control System of the Electric Scissor Lift
The control system of the electric scissor lift located beneath the chassis includes:
- Key Switch
- 10A Fuse
- Hour Meter
- Control Position Selector Lock
- Lift/Lower Switch
- Emergency Stop Button
- Charge Indicator Light, Battery Light
The control system on the work platform includes:
- Zone A Indicator Light
- Zone B Indicator Light
- Horn Switch
- Error Indicator Light
- Tilt Indicator Light
- Move/Lift Selector Switch
- Overload Indicator Light
- Zone A/Zone B Selector Switch
- Move/Lift Control Joystick
- Emergency Stop Button
- Battery Level Indicator Light (Green levels indicate sufficient power, while the final red bar indicates the need for charging).
The operating principle of the X-type lift involves vertical lifting and lowering. The operator can control the functions directly from the work platform.