Synchronised Hoisting Solution for Large-Scale Commercial Space Lifting Grilles | Case Study: Electric Skylight Equipment Project at Hangzhou Plaza 66

I. Project Background and Industry Challenges

In large public spaces such as high-end commercial complexes, art galleries and luxury hotels, skylight systems are not only key structural elements for natural lighting but also serve as focal points where spatial aesthetics and functionality converge.

The atrium of Hangzhou Henglong Plaza features a large petal-shaped retractable louvre design, which must be raised or lowered at specific times to regulate natural light, alter the spatial atmosphere, or facilitate equipment maintenance.

As the louvre's surface area and weight increase, traditional manual operation methods face numerous challenges:

Asynchronous louvre movement

Uneven load distribution at suspension points

Tangled cables

Equipment safety hazards

Difficulties in maintenance and servicing

Consequently, a motorised hoisting system with multi-motor synchronous control, independent maintenance capability and redundant backup is required to ensure stable, safe and aesthetically pleasing operation.

II. Client's Core Technical Requirements

The key requirements put forward by the project team include:

1️⃣ Achieve synchronised lifting and lowering of multiple louver groups to ensure a unified overall visual effect

2️⃣ Support for multiple independent suspension points, with at least three per grille group

3️⃣ Redundant control design to allow for maintenance even if one remote control or receiver fails

4️⃣ Accommodation of high-altitude installation and maintenance requirements, with provision for access routes

5️⃣ Quiet, smooth operation and high protection rating, suitable for a shopping centre environment

III. KLD Customised Solution

KLD has designed a system for this project comprising a zoned synchronous control system, independent suspension point drives and a redundant remote control solution. The core structure is as follows:

Lifting Louver System: Each louver group is equipped with 3 motors and 3 suspension points. With 6 louver groups in total, this amounts to 18 motors, enabling synchronised lifting in groups of three

Hook System: The West Lake Hall is equipped with 12 independent suspension points, each with one motor, allowing for individual control

Special Skylight System: Five skylights are fitted with sunshades and hooks; each skylight is controlled via an independent remote control, with the hooks operated separately

This system resolves three key challenges: synchronisation across multiple suspension points, fault redundancy, and maintenance at height.

IV. Core Technical Parameters

V. Design Highlights

✔ Synchronised Control Design: Three motors per grille section operate in unison to ensure the grilles remain level and aesthetically pleasing

✔ Redundant remote control system: The louvres are controlled by two sets of remote controls; should one set fail, the other can be used to lower the louvres for maintenance, ensuring operational continuity

✔ Safety limit system: Utilises multi-functional travel limit switches with mechanical power cut-off to prevent over-travel or free-fall

✔ Integrated Cable and Wire Rope System: Features an integrated universal hook with built-in travelling cable aviation connectors to prevent cable twisting and load rotation

✔ Maintenance Access Provision: A walkway is installed in the West Lake Hall, and the distinctive skylight incorporates provisions for motor relocation, ensuring accessibility for high-altitude equipment maintenance

VI. Application Scenarios

High-end commercial complexes

Art galleries

Lobby areas of luxury hotels

Large conference centres

Cultural and Performing Arts Venues

VII. Project Value

Upon implementation, this solution achieved:

Synchronisation precision of the louvre movement meeting visual uniformity standards

Independent control of individual lifting hooks to meet flexible exhibition layout requirements

Redundant remote control design, significantly reducing the impact of equipment failure on operations

Comprehensive maintenance access, extending the service life of the equipment

The project successfully passed final inspection, becoming a benchmark case for skylight systems in similar commercial spaces

VIII. Customisation Enquiries

Company: Beijing Tianheng Kairui (KLD Winch)

Customisation Services: We provide one-to-one technical solutions and bespoke quotations; please feel free to contact us with your specific requirements

IX. FAQ

Q1: How is synchronised lifting and lowering of multiple motors achieved?

A: By employing variable-frequency speed control and master-slave control logic, we ensure that multiple motors remain synchronised during start-up, operation and shutdown.

Q2: Will a fault in one unit affect the operation of the entire system?

A: Thanks to our redundant remote control design organised into groups, if one group fails, the other group can lower the grilles to allow access for maintenance without affecting overall operation.

Q3: Can the pulling force and rope speed of the motors be customised?

A: Yes, KLD can provide a bespoke 1:1 solution based on the on-site load and spatial dimensions.

Q4: How does the equipment meet high-altitude maintenance requirements?

A: The design incorporates access walkways or space for motor relocation, ensuring maintenance personnel can enter safely via access hatches.

Q5: Does KLD provide on-site installation guidance?

A: Yes, we provide full-process technical support from design and equipment delivery through to on-site commissioning.